MAC vendor lookup

Every connected device around the world comes with a unique Media Access Control address, or a   MAC address.

MAC vendor lookup
You are encouraged to solve this task according to the task description, using any language you may know.

A common task a network administrator may come across is being able to identify a network device's manufacturer when given only a MAC address.

Task

Interface with one (or numerous) APIs that exist on the internet and retrieve the device manufacturer based on a supplied MAC address.

A MAC address that does not return a valid result should return the String "N/A".   An error related to the network connectivity or the API should return a null result.

Many implementations on this page use http://api.macvendors.com/ which, as of 19th September 2021, is throttling requests. After only 2 calls, the following response is returned for all subsequent requests. If you are planning to use the same provider or going to run the examples on this page, consider building in a delay between two calls.

{"errors":{"detail":"Too Many Requests","message":"Please slow down your requests or upgrade your plan at https://macvendors.com"}}

Ada

Library: AWS

with Ada.Text_IO;

with AWS.Client;
with AWS.Response;
with AWS.Messages;

procedure MAC_Vendor is

   procedure Lookup (MAC : in String) is
      use AWS.Response;
      use AWS.Messages;
      URL     : constant String := "http://api.macvendors.com/" & MAC;
      Page    : constant Data   := AWS.Client.Get (URL);
      use Ada.Text_IO;
   begin
      Put (MAC);
      Set_Col (20);
      case AWS.Response.Status_Code (Page) is
         when S200   => Put_Line (Message_Body (Page));
         when S404   => Put_Line ("N/A");
         when others => Put_Line ("Error");
      end case;
   end Lookup;

begin
   --  Have to throttle traffic to site
   Lookup ("88:53:2E:67:07:BE");   delay 1.500;
   Lookup ("D4:F4:6F:C9:EF:8D");   delay 1.500;
   Lookup ("FC:FB:FB:01:FA:21");   delay 1.500;
   Lookup ("4c:72:b9:56:fe:bc");   delay 1.500;
   Lookup ("00-14-22-01-23-45");   delay 1.500;
   Lookup ("23-45-67");            delay 1.500;
   Lookup ("foobar");
end MAC_Vendor;

Output:

88:53:2E:67:07:BE  Intel Corporate
D4:F4:6F:C9:EF:8D  Apple, Inc.
FC:FB:FB:01:FA:21  Cisco Systems, Inc
4c:72:b9:56:fe:bc  PEGATRON CORPORATION
00-14-22-01-23-45  Dell Inc.
23-45-67           N/A
foobar             N/A

APL

Works with: Dyalog APL

Library: HttpCommand

Normally something like this would just be mapping the lookup across an array, but that doesn't let us control the timing of the request dispatch. To insert a delay between requests we have to create a traditional function ("tradfn") with a for loop.

⍝load the library module
]load HttpCommand

⍝ define a direct function (dfn) to look up a single MAC address
vendorLookup1 ← { (HttpCommand.Get 'http://api.macvendors.com/',⍕⍵).Data }

⍝ define a traditional function to look up all the MAC addresses in a list with
⍝ a delay between calls

⍝ The header says that the function is named vendorLookup, it takes a single
⍝ parameter which we call macList, and the value of the local variable
⍝ vendors will become the function's return value
∇ vendors  ← vendorLookup macList 
    ⍝ look up the first vendor and put it into an array in our return var
    vendors ← ⊆vendorLookup1 1↑macList
    
    ⍝ Loop over the rest of the array
    :For burger :In 1↓macList
       ⎕DL 2                              ⍝ wait 2 seconds
       vendors ⍪← ⊆vendorLookup1 burger   ⍝ then look up the next vendor and append
    :EndFor
∇

⍝ demo data
macList ←  '88:53:2E:67:07:BE' 'D4:F4:6F:C9:EF:8D' 'FC:FB:FB:01:FA:21' 
macList ⍪← '4c:72:b9:56:fe:bc' '00-14-22-01-23-45'

⍝ look up the vendors (takes a while with the 2-second delay between lookups)
vendorList ← vendorLookup macList

⍝ the result is an array (a 1-row by N-column matrix). to print out one vendor
⍝ per line, we reshape it to be N rows by 1 column instead. 
{(1⌷⍴⍵) 1 ⍴ ⍵} vendorList

Output:

 Intel Corporate      
 Apple, Inc.          
 Cisco Systems, Inc   
 PEGATRON CORPORATION 
 Dell Inc.        

AppleScript

set apiRoot to "https://api.macvendors.com"
set macList to {"88:53:2E:67:07:BE", "D4:F4:6F:C9:EF:8D", ¬
                "FC:FB:FB:01:FA:21", "4c:72:b9:56:fe:bc", "00-14-22-01-23-45"}

on lookupVendor(macAddr)
  global apiRoot
  return do shell script "curl " & apiRoot & "/" & macAddr
end lookupVendor

set table to { lookupVendor(first item of macList) }
repeat with burger in macList's items 2 thru -1
    delay 1.5
    set end of table to lookupVendor(burger)
end repeat

set text item delimiters to linefeed
return table as string

If this is part of a larger script you probably want to save and restore the text item delimiters:

set savedTID to text item delimiters
set text item delimiters to linefeed
set tableText to table as string
set text item delimiters to savedTID
return tableText

Output:

Intel Corporate
Apple, Inc.
Cisco Systems, Inc
PEGATRON CORPORATION
Dell Inc.

Arturo

loop ["FC-A1-3E" "FC:FB:FB:01:FA:21" "BC:5F:F4"] 'mac [
    print [mac "=>" read ~"http://api.macvendors.com/|mac|"]
    pause 1500
]

Output:

FC-A1-3E => Samsung Electronics Co.,Ltd 
FC:FB:FB:01:FA:21 => Cisco Systems, Inc 
BC:5F:F4 => ASRock Incorporation

AutoHotkey

macLookup(MAC){
	WebRequest := ComObjCreate("WinHttp.WinHttpRequest.5.1")
	WebRequest.Open("GET", "http://api.macvendors.com/" MAC)
	WebRequest.Send()
	return WebRequest.ResponseText
}

Examples:

MsgBox % macLookup("00-14-22-01-23-45")

Outputs:

Dell Inc.

BaCon

This code requires BaCon 3.8.2 or higher.

OPTION TLS TRUE

website$ = "api.macvendors.com"
mac$ = "b0:52:16:d0:3c:fb"

OPEN website$ & ":443" FOR NETWORK AS mynet
    SEND "GET /" & mac$ & " HTTP/1.1\r\nHost: " & website$ & "\r\n\r\n" TO mynet
    RECEIVE info$ FROM mynet
CLOSE NETWORK mynet

PRINT TOKEN$(info$, 2, "\r\n\r\n")

Output:

Hon Hai Precision Ind. Co.,Ltd.

BBC BASIC

Works with: BBC BASIC for Windows

      DIM Block% 599 : REM Memory buffer to receive GET info
      INSTALL @lib$ + "SOCKLIB" : PROC_initsockets
      
      READ Mac$
      WHILE Mac$ > ""
        WAIT 100 : REM 1 sec pause to avoid 'Too Many Requests' errors
        Socket=FN_tcpconnect("api.macvendors.com", "80")
        I%=FN_writelinesocket(Socket, "GET /" + Mac$ + " HTTP/1.0")
        I%=FN_writelinesocket(Socket, "")
        REPEAT N%=FN_readsocket(Socket, Block%, 600) UNTIL N% > 0
        PROC_closesocket(Socket)
        PRINT Mac$ TAB(24);
        CASE LEFT$($(Block% + 9), 3) OF
          WHEN "200"
            Block%?N%=0                       : REM Add terminating 0x00
            REPEAT N%-=1 UNTIL Block%?N% < 32 : REM Leave only last line
            PRINT $$(Block% + N% + 1)         : REM Print string from memory
          WHEN "404"
            PRINT "N/A"
          OTHERWISE
            PRINT "ERROR"
        ENDCASE
        READ Mac$
      ENDWHILE
      
      PROC_exitsockets
      END
      
      DATA 88:53:2E:67:07:BE, FC:FB:FB:01:FA:21, D4:F4:6F:C9:EF:8D, 10-11-22-33-44-55,

Output:

88:53:2E:67:07:BE       Intel Corporate
FC:FB:FB:01:FA:21       Cisco Systems, Inc
D4:F4:6F:C9:EF:8D       Apple, Inc.
10-11-22-33-44-55       N/A

C

Takes MAC address as input, prints usage on incorrect invocation, requires libcurl

#include <curl/curl.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>

/* Length of http://api.macvendors.com/ */
#define FIXED_LENGTH 16

struct MemoryStruct {
  char *memory;
  size_t size;
};
 
static size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
  size_t realsize = size * nmemb;
  struct MemoryStruct *mem = (struct MemoryStruct *)userp;
 
  mem->memory = realloc(mem->memory, mem->size + realsize + 1);
 
  memcpy(&(mem->memory[mem->size]), contents, realsize);
  mem->size += realsize;
  mem->memory[mem->size] = 0;
 
  return realsize;
}

void checkResponse(char* str){
	char ref[] = "Vendor not found";
	int len = strlen(str),flag = 1,i;
	
	if(len<16)
		fputs(str,stdout);
	else{
		for(i=0;i<len && i<16;i++)
			flag = flag && (ref[i]==str[i]);
		
		flag==1?fputs("N/A",stdout):fputs(str,stdout);
	}
}

int main(int argC,char* argV[])
{
		if(argC!=2)
			printf("Usage : %s <MAC address>",argV[0]);
		else{
			CURL *curl;
			int len = strlen(argV[1]);
			char* str = (char*)malloc((FIXED_LENGTH + len)*sizeof(char));
			struct MemoryStruct chunk;
			CURLcode res;
 
			chunk.memory = malloc(1);
			chunk.size = 0;  
 
        if ((curl = curl_easy_init()) != NULL) {
				sprintf(str,"http://api.macvendors.com/%s",argV[1]);

                                curl_easy_setopt(curl, CURLOPT_URL, str);
				curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
				curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
				
				free(str);
				
				res = curl_easy_perform(curl);
				
                if (res == CURLE_OK) {
				checkResponse(chunk.memory);
                                return EXIT_SUCCESS;
                }
				
                curl_easy_cleanup(curl);
			}
		}
        
        return EXIT_FAILURE;
}

Invocation and output :

C:\rosettaCode>macLookUp 00-11-22-33-44-55-66
CIMSYS Inc
C:\rosettaCode>macLookUp 10-11-22-33-44-55-66
N/A

C#

using System;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task<string> LookupMac(string MacAddress)
    {
        var uri = new Uri("http://api.macvendors.com/" + WebUtility.UrlEncode(MacAddress));
        using (var wc = new HttpClient())
            return await wc.GetStringAsync(uri);
    }
    static void Main(string[] args)
    {
        foreach (var mac in new string[] { "88:53:2E:67:07:BE", "FC:FB:FB:01:FA:21", "D4:F4:6F:C9:EF:8D" })
            Console.WriteLine(mac + "\t" + LookupMac(mac).Result);
        Console.ReadLine();
    }
}

Output:

88:53:2E:67:07:BE       Intel Corporate
FC:FB:FB:01:FA:21       Cisco Systems, Inc
D4:F4:6F:C9:EF:8D       Apple, Inc.

C++

Library: Boost

// This code is based on the example 'Simple HTTP Client' included with
// the Boost documentation.

#include <boost/beast/core.hpp>
#include <boost/beast/http.hpp>
#include <boost/beast/version.hpp>
#include <boost/asio/connect.hpp>
#include <boost/asio/ip/tcp.hpp>
#include <iostream>
#include <string>

bool get_mac_vendor(const std::string& mac, std::string& vendor) {
    namespace beast = boost::beast;
    namespace http = beast::http;
    namespace net = boost::asio;
    using tcp = net::ip::tcp;

    net::io_context ioc;
    tcp::resolver resolver(ioc);
    const char* host = "api.macvendors.com";

    beast::tcp_stream stream(ioc);
    stream.connect(resolver.resolve(host, "http"));

    http::request<http::string_body> req{http::verb::get, "/" + mac, 10};
    req.set(http::field::host, host);
    req.set(http::field::user_agent, BOOST_BEAST_VERSION_STRING);
    http::write(stream, req);

    beast::flat_buffer buffer;
    http::response<http::string_body> res;
    http::read(stream, buffer, res);

    bool success = res.result() == http::status::ok;
    if (success)
        vendor = res.body();

    beast::error_code ec;
    stream.socket().shutdown(tcp::socket::shutdown_both, ec);
    if (ec && ec != beast::errc::not_connected)
        throw beast::system_error{ec};

    return success;
}

int main(int argc, char** argv) {
    if (argc != 2 || strlen(argv[1]) == 0) {
        std::cerr << "usage: " << argv[0] << " MAC-address\n";
        return EXIT_FAILURE;
    }
    try {
        std::string vendor;
        if (get_mac_vendor(argv[1], vendor)) {
            std::cout << vendor << '\n';
            return EXIT_SUCCESS;
        } else {
            std::cout << "N/A\n";
        }
    } catch(std::exception const& e) {
        std::cerr << "Error: " << e.what() << std::endl;
    }
    return EXIT_FAILURE;
}

Output:

% ./mac_vendor_lookup 0c:4d:e9:00:00:00
Apple, Inc.

Common Lisp

(quicklisp:quickload :Drakma)            ; or load it in another way

(defun mac-vendor (mac)
  (check-type mac string "A MAC address as a string")
  (multiple-value-bind (vendor status)
    (drakma:http-request (format nil "http://api.macvendors.com/~a" mac))
    (if (= 200 status)
      (format t "~%Vendor is ~a" vendor)
      (error "~%Not a MAC address: ~a" mac))))

Delphi

Library: System.SysUtils

Library: IdHttp

program MAC_Vendor_Lookup;

{$APPTYPE CONSOLE}

uses
  System.SysUtils,
  IdHttp;

function macLookUp(mac: string): string;
begin
  Result := '';
  with TIdHTTP.Create(nil) do
  begin
    try
      Result := Get('http://api.macvendors.com/' + mac);

    except
      on E: Exception do
        Writeln(e.Message);
    end;
    Free;
  end;
end;

begin
  Writeln(macLookUp('FC-A1-3E'));
  sleep(1000);
  Writeln(macLookUp('FC:FB:FB:01:FA:21'));
  sleep(1000);
  Writeln(macLookUp('BC:5F:F4'));
  readln;
end.

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
ASRock Incorporation

Factor

USING: accessors calendar continuations http.client io kernel
sequences threads ;

: mac-vendor ( str -- str )
    "http://api.macvendors.com/" prepend
    [ http-get nip ] [ nip response>> message>> ] recover ;

"FC-A1-3E"
"FC:FB:FB:01:FA:21"
"10-11-22-33-44-55-66"
[ mac-vendor print 1 seconds sleep ] tri@

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
Not Found

FreeBASIC

Function pipeout(Byval s As String = "") Byref As String
    Var f = Freefile
    Dim As String tmp
    Open Pipe s For Input As #f 
    s = ""
    Do Until Eof(f)
        Line Input #f, tmp
        s &= tmp
    Loop
    Close #f
    Return s
End Function 

Function lookupvendor(webpage As String, mac As String) As String
    Return pipeout("powershell " + "(Invoke-WebRequest " + webpage + mac + ")")
End Function

Dim As String macs(1 To 4) = {"FC-A1-3E","FC:FB:FB:01:FA:21","88:53:2E:67:07:BE","D4:F4:6F:C9:EF:8D"}

For i As Integer = 1 To Ubound(macs)
    Var d = lookupvendor("api.macvendors.com/", macs(i))
    Var e = Instr(d, "RawContent")
    Print Mid(d, 66, e-66)
Next i
Sleep

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
Intel Corporate
Apple, Inc.

Free Pascal

program MACVendorLookup;

uses
  fphttpclient;

var
  res: String;
begin
  if paramCount > 0 then begin

    With TFPHttpClient.Create(Nil) do
    try
      allowRedirect := true;
      try
        res := Get('http://api.macvendors.com/' + ParamStr(1));
        writeLn(res);
      except
        writeLn('N/A');
      end;
    finally
      Free;
    end;
  end;
end.

Output:

./MACVendorLookup 10-11-22-33-44-55-66
N/A

./MACVendorLookup 00-11-22-33-44-55-66
CIMSYS Inc

Go

package main

import (
	"net/http"
	"fmt"
	"io/ioutil"
)

func macLookUp(mac string) (res string){
	resp, _ := http.Get("http://api.macvendors.com/" + mac)
	body, _ := ioutil.ReadAll(resp.Body)
	res = string(body)
	return
}

func main()  {
	fmt.Println(macLookUp("FC-A1-3E"))
	fmt.Println(macLookUp("FC:FB:FB:01:FA:21"))
	fmt.Println(macLookUp("BC:5F:F4"))
}

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
ASRock Incorporation

Haskell

Works with: GHC version 8.0.2

Library: http-client

#!/usr/bin/env stack
{- stack
  script
  --resolver lts-9.0
  --package bytestring
  --package http-client
  --package http-types
-}

{-# LANGUAGE MultiWayIf #-}

import Control.Exception (try)
import Control.Monad (forM_)
import qualified Data.ByteString.Lazy.Char8 as L8 (ByteString, unpack)
import Network.HTTP.Client
  (Manager, parseRequest, httpLbs, responseStatus, responseBody,
   newManager, defaultManagerSettings, Response, HttpException)
import Network.HTTP.Types.Status (statusIsSuccessful, notFound404)
import System.Environment (getArgs)
import Text.Printf (printf)

fetchURL :: Manager
         -> String
         -> IO (Either HttpException (Response L8.ByteString))
fetchURL mgr url = try $ do
  req <- parseRequest url
  httpLbs req mgr

lookupMac :: Manager -> String -> IO String
lookupMac mgr mac = do
  eth <- fetchURL mgr $ "http://api.macvendors.com/" ++ mac
  return $ case eth of
             Left _ -> "null"
             Right resp -> let body = responseBody resp
                               status = responseStatus resp
                           in if | status == notFound404 -> "N/A"
                                 | not (statusIsSuccessful status) -> "null"
                                 | otherwise -> L8.unpack body

main :: IO ()
main = do
  args <- getArgs
  mgr <- newManager defaultManagerSettings
  forM_ args $ \mac -> do
    putStr $ printf "%-17s" mac ++ " = "
    vendor <- lookupMac mgr mac
    putStrLn vendor

Output:

$ ./RosettaMac.hs 00:15:ed:f0:00:00 ff:ff:ff:ff:ff:ff 88:53:2E:67:07:BE FC:FB:FB:01:FA:21 D4:F4:6F:C9:EF:8D banana
00:15:ed:f0:00:00 = Fulcrum Microsystems, Inc.
ff:ff:ff:ff:ff:ff = N/A
88:53:2E:67:07:BE = Intel Corporate
FC:FB:FB:01:FA:21 = Cisco Systems, Inc
D4:F4:6F:C9:EF:8D = Apple, Inc.
banana            = N/A

J

Solution

require 'web/gethttp'
lookupMACvendor=: [: gethttp 'http://api.macvendors.com/'&,

Example Usage

   addr=: '88:53:2E:67:07:BE';'FC:FB:FB:01:FA:21';'D4:F4:6F:C9:EF:8D';'23:45:67'
   (,&'   ' , lookupMACvendor)&> addr
88:53:2E:67:07:BE   Intel Corporate   
FC:FB:FB:01:FA:21   Cisco Systems, Inc
D4:F4:6F:C9:EF:8D   Apple, Inc.       
23:45:67   Vendor not found

Java

package com.jamesdonnell.MACVendor;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

/** MAC Vendor Lookup class.
 * www.JamesDonnell.com
 * @author James A. Donnell Jr. */
public class Lookup {
	/** Base URL for API. The API from www.macvendors.com was chosen. */
	private static final String baseURL = "http://api.macvendors.com/";

	/** Performs lookup on MAC address(es) supplied in arguments.
	 * @param args MAC address(es) to lookup. */
	public static void main(String[] args) {
		for (String arguments : args)
			System.out.println(arguments + ": " + get(arguments));
	}

	/** Performs lookup on supplied MAC address.
	 * @param macAddress MAC address to lookup.
	 * @return Manufacturer of MAC address. */
	private static String get(String macAddress) {
		try {
			StringBuilder result = new StringBuilder();
			URL url = new URL(baseURL + macAddress);
			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
			conn.setRequestMethod("GET");
			BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			String line;
			while ((line = rd.readLine()) != null) {
				result.append(line);
			}
			rd.close();
			return result.toString();
		} catch (FileNotFoundException e) {
			// MAC not found
			return "N/A";
		} catch (IOException e) {
			// Error during lookup, either network or API.
			return null;
		}
	}
}

Java 11

 
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.List;
import java.util.concurrent.TimeUnit;

public final class MacVendorLookup {

	public static void main(String[] aArgs) throws InterruptedException, IOException {		
		for ( String macAddress : macAddresses ) {
			HttpResponse<String> response = getMacVendor(macAddress);
			System.out.println(macAddress + "  " + response.statusCode() + "  " + response.body());
			
			TimeUnit.SECONDS.sleep(2);
		}		
	}

	private static HttpResponse<String> getMacVendor(String aMacAddress) throws IOException, InterruptedException {				
		URI uri = URI.create(BASE_URL + aMacAddress);
		HttpClient client = HttpClient.newHttpClient();
		HttpRequest request = HttpRequest
			.newBuilder()
		    .uri(uri)
		    .header("accept", "application/json")
		    .GET()
		    .build();
		
		HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
		
		return response;
	}
	
	private static final String BASE_URL = "http://api.macvendors.com/";
	
	private static final List<String> macAddresses = List.of("88:53:2E:67:07:BE",
															 "D4:F4:6F:C9:EF:8D",
															 "FC:FB:FB:01:FA:21",
															 "4c:72:b9:56:fe:bc",
															 "00-14-22-01-23-45"
															 );	
	
}

Output:

88:53:2E:67:07:BE  200  Intel Corporate
D4:F4:6F:C9:EF:8D  200  Apple, Inc.
FC:FB:FB:01:FA:21  200  Cisco Systems, Inc
4c:72:b9:56:fe:bc  200  PEGATRON CORPORATION
00-14-22-01-23-45  200  Dell Inc.

JavaScript

var mac = "88:53:2E:67:07:BE";
function findmac(){
	window.open("http://api.macvendors.com/" + mac);
}

findmac();

Output:

Intel Corporate

Julia

# v0.6.0

using Requests

function getvendor(addr::String)
    try
        get("http://api.macvendors.com/$addr") |> readstring
    catch e
        nothing
    end
end

for addr in ["88:53:2E:67:07:BE", "FC:FB:FB:01:FA:21", "D4:F4:6F:C9:EF:8D", "23:45:67"]
    println("$addr -> ", getvendor(addr))
end

Output:

88:53:2E:67:07:BE -> Intel Corporate
FC:FB:FB:01:FA:21 -> Cisco Systems, Inc
D4:F4:6F:C9:EF:8D -> Apple, Inc.
23:45:67 -> Vendor not found

Kotlin

// version 1.1.2

import java.net.URL

fun lookupVendor(mac: String) = URL("http://api.macvendors.com/" + mac).readText()

fun main(args: Array<String>) {
    val macs = arrayOf("FC-A1-3E", "FC:FB:FB:01:FA:21", "88:53:2E:67:07:BE", "D4:F4:6F:C9:EF:8D")
    for (mac in macs) println(lookupVendor(mac))
}

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
Intel Corporate
Apple, Inc.

Logo

Works with: UCB Logo

make "api_root "http://api.macvendors.com/
make "mac_list [88:53:2E:67:07:BE D4:F4:6F:C9:EF:8D FC:FB:FB:01:FA:21
                4c:72:b9:56:fe:bc 00-14-22-01-23-45]

to lookup_vendor :mac
  output first shell (sentence [curl -s] (word :api_root :mac) [&& echo])
end

print lookup_vendor first :mac_list
foreach butfirst :mac_list [
  wait 90
  print lookup_vendor ?
]
bye
bye

Output:

Intel Corporate
Apple, Inc.
Cisco Systems, Inc
PEGATRON CORPORATION
Dell Inc.

Lua

-- Requires LuaSocket extension by Lua
-- Created by James A. Donnell Jr.
-- www.JamesDonnell.com

local baseURL = "http://api.macvendors.com/"

local function lookup(macAddress)
	http = require "socket.http"
	result, statuscode, content = http.request(baseURL .. macAddress)
	return result
end

local macAddress = "FC-A1-3E-2A-1C-33"
print(lookup(macAddress))

M2000 Interpreter

Module Checkit {
      httpGet$=lambda$  (url$, timeout=500)->{
            declare htmldoc "WinHttp.WinHttpRequest.5.1"
            Method htmldoc "SetTimeouts", timeout, timeout, timeout, timeout
            Method htmldoc "open","GET", url$, false
            Method htmldoc "setRequestHeader","Content-Type", "application/x-www-form-urlencoded"
            Method htmldoc "send"
            With  htmldoc, "responseText" as ready$ 
            res$=trim$(ready$)
            if left$(res$,1)="{" then 
                  ="N/A"
            else
                   =res$
            end if
            declare htmldoc nothing
      }
       Urls=("88:53:2E:67:07:BE", "FC:FB:FB:01:FA:21", "D4:F4:6F:C9:EF:8D", "BC:5F:F4")
       url=each(URLs)
       While Url {
             Print Array$(URL),@(20), httpGet$("https://api.macvendors.com/"+Array$(URL))
             Wait 1500
      }
}
Checkit

Mathematica/Wolfram Language

macLookup[mac_String] := Quiet[Check[Import["http://api.macvendors.com/" <> mac], "N/A"]]

Examples:

macLookup["00-14-22-01-23-45"]

Outputs:

Dell Inc.

MiniScript

This implementation is for use with the Mini Micro version of MiniScript.

macList = ["88:53:2E:67:07:BE", "FC:FB:FB:01:FA:21", "00:02:55:00:00:00",
           "D4:F4:6F:C9:EF:8D", "23:45:67", "18:93:D7", "1C:A6:81"]

for mac in macList
	ret = http.get("http://api.macvendors.com/"+mac)
	if ret == "HTTP/1.1 404 Not Found" then ret = "N/A"
	print ret
	wait 1
end for

Output:

Intel Corporate
Cisco Systems, Inc
IBM Corp
Apple, Inc.
N/A
Texas Instruments
HUAWEI TECHNOLOGIES CO.,LTD

Nim

import httpclient

for mac in ["FC-A1-3E", "FC:FB:FB:01:FA:21", "BC:5F:F4"]:
  echo newHttpClient().getContent("http://api.macvendors.com/"&mac)

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
ASRock Incorporation

Nu

let mactable = http get "http://standards-oui.ieee.org/oui/oui.csv" | from csv --no-infer

def get-mac-org [] {
	let assignment = $in | str upcase | str replace --all --regex "[^A-Z0-9]" "" | str substring 0..6
	$mactable | where Assignment == $assignment | try {first | get "Organization Name"} catch {"N/A"}
}

# Test cases from the Ada entry
let macs = [
	# Should succeed
	"88:53:2E:67:07:BE"
	"D4:F4:6F:C9:EF:8D"
	"FC:FB:FB:01:FA:21"
	"4c:72:b9:56:fe:bc"
	"00-14-22-01-23-45"
	# Should fail
	"23-45-67"
	"foobar"
]

$macs | each {{MAC: $in, Vendor: ($in | get-mac-org)}}

Output:

╭───┬───────────────────┬──────────────────────╮
│ # │        MAC        │        Vendor        │
├───┼───────────────────┼──────────────────────┤
│ 0 │ 88:53:2E:67:07:BE │ Intel Corporate      │
│ 1 │ D4:F4:6F:C9:EF:8D │ Apple, Inc.          │
│ 2 │ FC:FB:FB:01:FA:21 │ Cisco Systems, Inc   │
│ 3 │ 4c:72:b9:56:fe:bc │ PEGATRON CORPORATION │
│ 4 │ 00-14-22-01-23-45 │ Dell Inc.            │
│ 5 │ 23-45-67          │ N/A                  │
│ 6 │ foobar            │ N/A                  │
╰───┴───────────────────┴──────────────────────╯

OCaml

(* build with ocamlfind ocamlopt -package netclient -linkpkg macaddr.ml -o macaddr *)

open Printf
open Nethttp_client.Convenience
open Unix

(* example vendors, including a nonsense one *)

let vendors = ["FF:FF:FF:67:07:BE"; "D4:F4:6F:C9:EF:8D"; "FC:FB:FB:01:FA:21"; "88:53:2E:67:07:BE"]

let get_vendor addr =
  sleep 3; (* built-in delay to handle rate-limiting at macvendors.com *)
  
  let client = http_get_message ("http://api.macvendors.com/" ^ addr) in
  match client # response_status_code with
  | 200 -> client # response_body # value
  | 404 -> "N/A"
  | _ -> "NULL"
             
let rec parse_vendors vendors =
  match vendors with
  | [] -> []
  | hd::tl -> get_vendor hd :: parse_vendors tl

let rec print_vendors vendor_list =
  match vendor_list with
  | [] -> ""
  | hd::tl -> printf "%s\n" hd; print_vendors tl
  
let main =
  let vendor_list = parse_vendors vendors in
  print_vendors vendor_list

Output:

N/A
Apple, Inc.
Cisco Systems, Inc
Intel Corporate

Perl

#!/usr/bin/env perl -T
use v5.18.2;
use warnings;
use LWP;
use Time::HiRes qw(sleep);

our $VERSION = 1.000_000;

my $ua = LWP::UserAgent->new;

no warnings 'qw';
my @macs = qw(
    FC-A1-3EFC:FB:FB:01:FA:21 00,0d,4b
    Rhubarb                   00-14-22-01-23-45
    10:dd:b1                  D4:F4:6F:C9:EF:8D
    FC-A1-3E                  88:53:2E:67:07:BE
    23:45:67                  FC:FB:FB:01:FA:21
    BC:5F:F4
);

while (my $mac = shift @macs) {
    my $vendor = get_mac_vendor($mac);
    if ($vendor) {
        say "$mac = $vendor";
    }
    sleep 1.5 if @macs;
}

sub get_mac_vendor {
    my $s = shift;

    my $req = HTTP::Request->new( GET => "http://api.macvendors.com/$s" );
    my $res = $ua->request($req);

    # A error related to the network connectivity or the API should
    # return a null result.
    if ( $res->is_error ) {
        return;
    }

    # A MAC address that does not return a valid result should
    # return the String "N/A".
    if (  !$res->content
        or $res->content eq 'Vendor not found' )
    {
        return 'N/A';
    }

    return $res->content;
}

# IEEE 802:
#  Six groups of two hexadecimal digits separated by hyphens or colons,
#    like 01-23-45-67-89-ab or 01:23:45:67:89:ab
#  Three groups of four hexadecimal digits separated by dots (.),
#    like 0123.4567.89ab
#sub validmac {
#    my $s = shift;
#
#    my $hex    = qr{ [A-Fa-f[:digit:]] }xms;
#    my $hex2ws = qr{ [-:] $hex{2} }xms;
#
#    if (   $s =~ m{\A $hex{2} $hex2ws{5} \z}xms
#        or $s =~ m{\A $hex{4} [.] $hex{4}  [.] $hex{4} \z}xms )
#    {
#        return 'true';
#    }
#    return;
#}

Output:

FC-A1-3EFC:FB:FB:01:FA:21 = Samsung Electronics Co.,Ltd
00,0d,4b = Roku, Inc.
00-14-22-01-23-45 = Dell Inc.
10:dd:b1 = Apple, Inc.
D4:F4:6F:C9:EF:8D = Apple, Inc.
FC-A1-3E = Samsung Electronics Co.,Ltd
88:53:2E:67:07:BE = Intel Corporate
FC:FB:FB:01:FA:21 = Cisco Systems, Inc
BC:5F:F4 = ASRock Incorporation

Phix

Library: Phix/libcurl

without js -- libcurl
string test = "00-11-22-33-44-55-66"     -- CIMSYS Inc
--string test = "10-11-22-33-44-55-66"      -- N/A
include builtins/libcurl.e
curl_global_init()
atom curl = curl_easy_init()
string url = sprintf("http://api.macvendors.com/%s",{test})
curl_easy_setopt(curl, CURLOPT_URL, url)
object res = curl_easy_perform_ex(curl)
if string(res) then
    if res="Vendor not found"
    or res=`{"errors":{"detail":"Not Found"}}` then
        res = "N/A"
    end if
    ?res
else
    ?{"error",res}
end if
curl_easy_cleanup(curl)
curl_global_cleanup()

Output:

CIMSYS Inc

PHP

Translation of: AppleScript

<?php
$apiRoot = "https://api.macvendors.com";
$macList = array("88:53:2E:67:07:BE", "D4:F4:6F:C9:EF:8D", 
		 "FC:FB:FB:01:FA:21", "4c:72:b9:56:fe:bc", "00-14-22-01-23-45");

$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
foreach ($macList as $burger) {
  curl_setopt($curl, CURLOPT_URL, "$apiRoot/$burger");
  echo(curl_exec($curl));
  echo("\n");
  sleep(2);
}
curl_close($curl);
?>

Output:

Intel Corporate
Apple, Inc.
Cisco Systems, Inc
PEGATRON CORPORATION
Dell Inc.

PowerShell

Translation of: AppleScript

$apiRoot = "http://api.macvendors.com"
$macAddresses = @("88:53:2E:67:07:BE", "D4:F4:6F:C9:EF:8D",
                  "FC:FB:FB:01:FA:21", "4c:72:b9:56:fe:bc",
                  "00-14-22-01-23-45")

$macAddresses | % {
  (Invoke-WebRequest "$apiRoot/$_").Content
  Start-Sleep 1.5
}

Output:

Intel Corporate
Apple, Inc.
Cisco Systems, Inc
PEGATRON CORPORATION
Dell Inc.

Python

Library: requests

import requests

for addr in ['88:53:2E:67:07:BE', 'FC:FB:FB:01:FA:21',
        'D4:F4:6F:C9:EF:8D', '23:45:67']:
    vendor = requests.get('http://api.macvendors.com/' + addr).text
    print(addr, vendor)

Output:

88:53:2E:67:07:BE Intel Corporate
FC:FB:FB:01:FA:21 Cisco Systems, Inc
D4:F4:6F:C9:EF:8D Apple, Inc.
23:45:67 Vendor not found

Racket

#lang racket

(require net/url)

(define (lookup-MAC-address addr)
  (port->string
   (get-pure-port
    (url "http" #f "api.macvendors.com" #f #t (list (path/param addr null)) null #f))))

(module+ test
(for ((i (in-list '("88:53:2E:67:07:BE"
                    "FC:FB:FB:01:FA:21"
                    "D4:F4:6F:C9:EF:8D"))))
  (printf "~a\t~a~%" i (lookup-MAC-address i))))

Output:

88:53:2E:67:07:BE	Intel Corporate
FC:FB:FB:01:FA:21	Cisco Systems, Inc
D4:F4:6F:C9:EF:8D	Apple, Inc.

Raku

(formerly Perl 6)

Works with: Rakudo version 2018.03

Apparently there is some rate limiting on place now, sleep a bit between requests.

use HTTP::UserAgent;
 
my $ua = HTTP::UserAgent.new;
 
$ua.timeout = 10; # seconds
 
my $server = 'http://api.macvendors.com/';
 
sub lookup ($mac) {
    my $response = $ua.get: "$server+$mac";
    sleep 1;
    return $response.is-success ?? $response.content !! 'N/A';
 
    CATCH {             # Normally you would report some information about what
        default { Nil } # went wrong, but the task specifies to ignore errors.
    }
}
 
for <
BC:5F:F4
FC-A1-3E
10:dd:b1
00:0d:4b
23:45:67
> -> $mac { say lookup $mac }

Output:

ASRock Incorporation
Samsung Electronics Co.,Ltd
Apple, Inc.
Roku, Inc.
N/A

Red

print read rejoin [http://api.macvendors.com/ ask "MAC address: "]

Output:

MAC address: 88:53:2E:67:07:BE
Intel Corporate

REXX

This REXX version only works under Microsoft Windows and Regina REXX.

/*REXX pgm shows a network device's manufacturer based on the Media Access Control addr.*/
win_command         = 'getmac'                   /*name of the Microsoft Windows command*/
win_command_options = '/v /fo list'              /*options  of     "        "       "   */
?3= 'Network Adapter:'                           /*search keywords for Network Adapter. */
?4= 'Physical Address:'                          /*   "       "     "  Physical Address.*/
upper ?3 ?4                                      /*uppercase in case for capitol letters*/
@.=;            @.0= 0                           /*just─in─case values for the keywords.*/
rc= 0                                            /*  "   "   "  value for the returnCode*/
address system win_command win_command_options   with   output stem @.  /*issue command.*/
if rc\==0  then do                               /*display an error if not successful.  */
                say
                say '***error*** from command: '     win_command     win_command_options
                say 'Return code was: '    rc
                say
                exit rc
                end
MACaddr=.                                        /*just─in─case value for the keyword.  */
maker=.                                          /*  "   "   "    "    "   "     "      */
           do j=1  for @.0;  $= @.j;  upper $    /*parse each of the possible responses.*/
           if left($, length(?3))=?3  then maker=   subword(@.j, 3)   /*is this the one?*/
           if left($, length(?4))=?4  then MACaddr= word(@.j, 3)      /* "   "   "   "  */
           end   /*k*/
                                                 /* [↑]  Now, display good or bad stuff.*/
if maker=. | MACaddr==.  then say 'MAC address manufacturer not found.'
                         else say 'manufacturer for MAC address  '  MACaddr "  is  " maker
exit 0                                           /*stick a fork in it,  we're all done. */

output   when using the default input:

manufacturer for MAC address   00-16-17-F9-C8-AA    is    Broadcom NetLink (TM) Gigabit Ethernet

Ring

# Project: MAC Vendor Lookup

load "stdlib.ring"
macs = ["FC-A1-3E","FC:FB:FB:01:FA:21","88:53:2E:67:07:BE","D4:F4:6F:C9:EF:8D"]
for mac = 1 to len(macs)
     lookupvendor(macs[mac])
next

func lookupvendor(mac)
       url = download("api.macvendors.com/" + mac)
       see url + nl

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
Intel Corporate
Apple, Inc.

Ruby

require 'net/http'

arr = ['88:53:2E:67:07:BE', 'FC:FB:FB:01:FA:21', 'D4:F4:6F:C9:EF:8D', '23:45:67']

arr.each do |addr|
  vendor = Net::HTTP.get('api.macvendors.com', "/#{addr}/") rescue nil
  puts "#{addr}  #{vendor}" 
end

Output:

88:53:2E:67:07:BE  Intel Corporate
FC:FB:FB:01:FA:21  Cisco Systems, Inc
D4:F4:6F:C9:EF:8D  Apple, Inc.
23:45:67  Vendor not found

Rust

extern crate reqwest;

use std::{thread, time};

fn get_vendor(mac: &str) -> Option<String> {
    let mut url = String::from("http://api.macvendors.com/");
    url.push_str(mac);
    let url_ref = &url;
    match reqwest::get(url_ref) {
        Ok(mut res) => match res.text() {
            Ok(text) => {
                if text.contains("Not Found") {
                    Some("N/A".to_string())
                } else {
                    Some(text)
                }
            }
            Err(e) => {
                println!("{:?}", e);
                None
            }
        },
        Err(e) => {
            println!("{:?}", e);
            None
        }
    }
}

fn main() {
    let duration = time::Duration::from_millis(1000);
    match get_vendor("88:53:2E:67:07:BE") {
        None => println!("Error!"),
        Some(text) => println!("{}", text),
    }
    thread::sleep(duration);
    match get_vendor("FC:FB:FB:01:FA:21") {
        None => println!("Error!"),
        Some(text) => println!("{}", text),
    }
    thread::sleep(duration);
    match get_vendor("FC-A1-3E") {
        None => println!("Error!"),
        Some(text) => println!("{}", text),
    }
    thread::sleep(duration);
    match get_vendor("abcdefg") {
        None => println!("Error!"),
        Some(text) => println!("{}", text),
    }
}

Output:

Intel Corporate
Cisco Systems, Inc
Samsung Electronics Co.,Ltd
N/A

Scala

object LookUp extends App {
  val macs = Seq("FC-A1-3E", "FC:FB:FB:01:FA:21", "88:53:2E:67:07:BE", "D4:F4:6F:C9:EF:8D")

  def lookupVendor(mac: String) =
    scala.io.Source.fromURL("""http://api.macvendors.com/""" + mac, "UTF-8").mkString

  macs.foreach(mac => println(lookupVendor(mac)))
}

Scheme

Translation of: Applescript

Works with: Chicken Scheme

Library: http-client

(import http-client (chicken io))
(define api-root "http://api.macvendors.com")
(define mac-addresses '("88:53:2E:67:07:BE" "D4:F4:6F:C9:EF:8D"
                        "FC:FB:FB:01:FA:21" "4c:72:b9:56:fe:bc"
                        "00-14-22-01-23-45"))

(define get-vendor (lambda (mac-address)
  (with-input-from-request (string-append api-root "/" mac-address)
      #f read-string)))

(display (get-vendor (car mac-addresses)))
(newline)
(map (lambda (burger) (sleep 2) (display (get-vendor burger)) (newline))
     (cdr mac-addresses))

Output:

Intel Corporate
Apple, Inc.
Cisco Systems, Inc
PEGATRON CORPORATION
Dell Inc.

Tcl

package require http

# finally is a bit like go's defer
proc finally args {
    tailcall trace add variable :#finally#: unset [list apply [list args $args]]
}

# basic wrapper for http::geturl
proc geturl {url} {
    set tok [::http::geturl $url]
    finally ::http::cleanup $tok
    ::http::data $tok
}   
proc maclookup {mac} {
    geturl http://api.macvendors.com/$mac
}

foreach mac {00-14-22-01-23-45 88:53:2E:67:07:BE} {
    puts "$mac\t[maclookup $mac]"
}

Output:

00-14-22-01-23-45       Dell Inc.
88:53:2E:67:07:BE       Intel Corporate

UNIX Shell

Translation of: AppleScript

Works with: Bourne Again SHell

Works with: Korn Shell version 93+

Works with: Z Shell

Surprising that nobody had implemented the Bash / Shell version yet.

macList=(88:53:2E:67:07:BE D4:F4:6F:C9:EF:8D FC:FB:FB:01:FA:21
         4c:72:b9:56:fe:bc 00-14-22-01-23-45)

lookup() {
  curl -s "http://api.macvendors.com/$1" && echo
}

lookup "${macList[0${ZSH_VERSION:++1}]}"
for burger in "${macList[@]:1}"; do
  sleep 2
  lookup "$burger"
done

It can be made to work in a pure-POSIX shell without array variables:

Works with: Bourne Shell

Works with: Almquist Shell

set -- 88:53:2E:67:07:BE D4:F4:6F:C9:EF:8D FC:FB:FB:01:FA:21 \
       4c:72:b9:56:fe:bc 00-14-22-01-23-45

lookup() {
  curl -s "http://api.macvendors.com/$1" && echo
}

lookup "$1"
shift
for burger; do
  sleep 2
  curl -s "http://api.macvendors.com/$burger" && echo
done

And hey, just for completeness, let's toss in a [t]csh version:

Works with: C Shell

set macList=(88:53:2E:67:07:BE D4:F4:6F:C9:EF:8D FC:FB:FB:01:FA:21 \
             4c:72:b9:56:fe:bc 00-14-22-01-23-45)

alias lookup curl -s "http://api.macvendors.com/!":1 "&&" echo

lookup "$macList[1]"
foreach burger ($macList[2-]:q)
  sleep 2
  lookup "$burger"
end

Output:

All the above versions have identical output:

Intel Corporate
Apple, Inc.
Cisco Systems, Inc
PEGATRON CORPORATION
Dell Inc.

VBScript

a=array("00-20-6b-ba-d0-cb","00-40-ae-04-87-86")
set WebRequest = CreateObject("WinHttp.WinHttpRequest.5.1")

for each MAC in a 
  if b<>0 then   wscript.echo "Spacing next request...": wscript.sleep 2000
  WebRequest.Open "GET", "http://api.macvendors.com/"& mac,1
  WebRequest.Send()
  WebRequest.WaitForResponse 
  b=b+1
  wscript.echo mac & " -> " & WebRequest.ResponseText
next

Output:

00-20-6b-ba-d0-cb -> KONICA MINOLTA HOLDINGS, INC.
Spacing next request...
00-40-ae-04-87-86 -> DELTA CONTROLS, INC.

V (Vlang)

import net.http
import time

const macs = 
('
FC-A1-3E
FC:FB:FB:01:FA:21
D4:F4:6F:C9:EF:8D
')

fn main() {
    for line in macs.split('\n') {
        if line !='' {
            println(mac_lookup(line))
            time.sleep(2 * time.second) // considerate delay between attempts
        }
    }
}

fn mac_lookup(mac string) string {
    resp := http.get("http://api.macvendors.com/" + mac) or {return 'No data from server'}
    return resp.body.str()
}

Output:

Samsung Electronics Co.,Ltd
Cisco Systems, Inc
Apple, Inc.

Visual Basic .NET

Based on the C# sample but works with .Net versions prior to Framework 4.5.
Expects the address to be on the command line, if not specified, it defaults to 88:53:2E:67:07:BE.

' MAC Vendor lookup - based on the C# sample.

Imports System
Imports System.Net

Module LookupMac

    Public Sub Main(args() As String)

        Dim macAddress As String = If(args.Length < 1, "88:53:2E:67:07:BE", args(0))
        Dim uri As New Uri("http://api.macvendors.com/" & WebUtility.UrlEncode(macAddress))
        Dim wc As New WebClient()
        Console.Out.WriteLine(macAddress & "    " & wc.DownloadString(uri))

    End Sub

End Module

Output:

With no address on the command line:

88:53:2E:67:07:BE    Intel Corporate

With FC:FB:FB:01:FA:21 on the command line:

FC:FB:FB:01:FA:21    Cisco Systems, Inc

Wren

Wren CLI doesn't currently expose a way to look up a MAC address.

However, if Wren is embedded in (say) a suitable Go program, then we can ask the latter to do it for us.

/* MAC_vendor_lookup.wren */
class MAC {
    foreign static lookup(address)
}

System.print(MAC.lookup("FC:FB:FB:01:FA:21"))
for (i in 1..1e8) {} // slow down request
System.print(MAC.lookup("23:45:67"))

which we embed in the following Go program and run it.

Library: WrenGo

/* MAC_vendor_lookup.go */
package main

import (
    wren "github.com/crazyinfin8/WrenGo"
    "io/ioutil"
    "net/http"
)

type any = interface{}

func macLookup(vm *wren.VM, parameters []any) (any, error) {
    mac := parameters[1].(string)
    resp, err := http.Get("http://api.macvendors.com/" + mac)
    if err != nil {
        return nil, nil
    }
    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        return nil, nil
    }
    var vendor = string(body)
    if vendor == `{"errors":{"detail":"Not Found"}}` {
        return "N/A", nil
    }
    return vendor, nil
}    

func main() {
    vm := wren.NewVM()
    fileName := "MAC_vendor_lookup.wren"
    methodMap := wren.MethodMap{"static lookup(_)": macLookup}
    classMap := wren.ClassMap{"MAC": wren.NewClass(nil, nil, methodMap)}
    module := wren.NewModule(classMap)
    vm.SetModule(fileName, module)
    vm.InterpretFile(fileName)
    vm.Free()
}

Output:

Cisco Systems, Inc
N/A

zkl

Translation of: Lua

Uses libcurl (the multiprotocol file transfer library) to do the web query

var [const] CURL=Import("zklCurl");   // libcurl
const MAC_VENDORS="http://api.macvendors.com/";

fcn lookUp(macAddress){
   httpAddr:=MAC_VENDORS + macAddress;
   vender:=CURL().get(httpAddr); //-->(Data,bytes of header,bytes of trailer)
   vender=vender[0].del(0,vender[1]);  // remove HTTP header
   vender.text;		// Data --> String (Data is a byte bucket)
}

lookUp("FC-A1-3E-2A-1C-33").println();
lookUp("4c:72:b9:56:fe:bc").println();
lookUp("foobar").println();

Output:

Samsung Electronics Co.,Ltd
PEGATRON CORPORATION
Vendor not found

Zoea

program: mac_vendor_lookup

data: 'http://api.macvendors.com/'

input: 'D4:F4:6F:C9:EF:8D'
derive: 'http://api.macvendors.com/D4:F4:6F:C9:EF:8D'
output: 'Apple, Inc.'

Zoea Visual

MAC Vendor Lookup