Introduction to Data Communications
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Ethernet Address Assignments

Ethernet addresses are often written in several different forms and displayed as 6 hexadecimal numbers:

080023AF54F7	08-00-23-AF-54-F7	08 00 23 AF 54 F7	08.00.23.AF.54.F7

This document contains:

• Vendor Addresses
• Ethernet Multicast Addresses
• Broadcast Address

For current up-to-date links contact : map-ne.com/Ethernet/

Vendor Addresses

The first 3 hexadecimal digits are assigned by the IEEE to vendors. This is a partial list of vendor Ethernet assigned MAC addresses.

00000C	Cisco
00000E	Fujitsu
00000F	NeXT
000010	Sytek
00001D	Cabletron
000020	DIAB (Data Intdustrier AB)
000022	Visual Technology
00002A	TRW
000032	GPT Limited (reassigned from GEC Computers Ltd)
00005A	S & Koch
00005E	IANA
000065	Network General
00006B	MIPS
000077	MIPS
00007A	Ardent
000089	Cayman Systems Gatorbox
000093	Proteon
00009F	Ameristar Technology
0000A2	Wellfleet
0000A3	Network Application Technology
0000A6	Network General (internal assignment, not for products)
0000A7	NCD X-terminals
0000A9	Network Systems
0000AA	Xerox	 Xerox machines
0000B3	CIMLinc
0000B7	Dove Fastnet
0000BC	Allen-Bradley
0000C0	Western Digital
0000C5	Farallon phone net card
0000C6	HP Intelligent Networks Operation (formerly Eon Systems)
0000C8	Altos
0000C9	Emulex Terminal Servers
0000D7	Dartmouth College (NED Router)
0000D8	3Com? Novell? PS/2
0000DD	Gould
0000DE	Unigraph
0000E2	Acer Counterpoint
0000EF	Alantec
0000FD	High Level Hardvare (Orion, UK)
000102	BBN internal usage (not registered)
0020AF	3COM ???
001700	Kabel
008064	Wyse Technology / Link Technologies
00802B	IMAC ???
00802D	Xylogics, Inc.	Annex terminal servers
00808C	Frontier Software Development
0080C2	IEEE 802.1 Committee
0080D3	Shiva
00AA00	Intel
00DD00	Ungermann-Bass
00DD01	Ungermann-Bass
020701	Racal InterLan
020406	BBN internal usage (not registered)
026086	Satelcom MegaPac (UK)
02608C	3Com	IBM PC; Imagen; Valid; Cisco
02CF1F	CMC	 Masscomp; Silicon Graphics; Prime EXL
080002	3Com (Formerly Bridge)
080003	ACC (Advanced Computer Communications)
080005	Symbolics LISP machines
080008	BBN
080009	Hewlett-Packard
08000A	Nestar Systems
08000B	Unisys
080011	Tektronix, Inc.
080014	Excelan  BBN Butterfly, Masscomp, Silicon Graphics
080017	NSC
08001A	Data General
08001B	Data General
08001E	Apollo
080020	Sun machines
080022	NBI
080025	CDC
080026	Norsk Data (Nord)
080027	PCS Computer Systems GmbH
080028	TI Explorer
08002B	DEC
08002E	Metaphor
08002F	Prime Computer	Prime 50-Series LHC300
080036	Intergraph CAE stations
080037	Fujitsu-Xerox
080038	Bull
080039	Spider Systems
080041	DCA Digital Comm. Assoc.
080045	???? (maybe Xylogics, but they claim not to know this number)
080046	Sony
080047	Sequent
080049	Univation
08004C	Encore
08004E	BICC
080056	Stanford University
080058	???	DECsystem-20
08005A	IBM
080067	Comdesign
080068	Ridge
080069	Silicon Graphics
08006E	Concurrent Masscomp
080075	DDE (Danish Data Elektronik A/S)
08007C	Vitalink TransLAN III
080080	XIOS
080086	Imagen/QMS
080087	Xyplex	 terminal servers
080089	Kinetics AppleTalk-Ethernet interface
08008B	Pyramid
08008D	XyVision machines
080090	Retix Inc Bridges
484453	HDS ???
800010	AT&T
AA0000 - 6	DEC obsolete

Ethernet Multicast Addresses

An Ethernet multicast address consists of the multicast bit, the 23-bit vendor component, and the 24-bit group identifier assigned by the vendor. For example, DEC is assigned the vendor component 08-00-2B, so multicast addresses assigned by DEC have the first 24-bits 09-00-2B (since the multicast bit is the low-order bit of the first byte, which is "the first bit on the wire").

Multicast Addresses:

MAC Address 		Type Field	Description
01-00-5E-00-00-00-      0800   	 	Internet Multicast        [RFC1112]
01-00-5E-7F-FF-FF
01-00-5E-80-00-00-      ????    	Internet reserved by IANA
01-00-5E-FF-FF-FF
01-80-C2-00-00-00       -802-   	Spanning tree (for bridges)
09-00-02-04-00-01?      8080?   	Vitalink printer
09-00-02-04-00-02?      8080?		Vitalink management
09-00-09-00-00-01       8005    	HP Probe
09-00-09-00-00-01       -802-   	HP Probe
09-00-09-00-00-04       8005?   	HP DTC
09-00-1E-00-00-00       8019?   	Apollo DOMAIN
09-00-2B-00-00-00       6009?   	DEC MUMPS?
09-00-2B-00-00-01       8039?   	DEC DSM/DTP?
09-00-2B-00-00-02       803B?   	DEC VAXELN?
09-00-2B-00-00-03       8038    	DEC Lanbridge Traffic Monitor (LTM)
09-00-2B-00-00-04       ????    	DEC MAP End System Hello
09-00-2B-00-00-05       ????    	DEC MAP Intermediate System Hello
09-00-2B-00-00-06       803D?		DEC CSMA/CD Encryption?
09-00-2B-00-00-07       8040?		DEC NetBios Emulator?
09-00-2B-00-00-0F       6004    	DEC Local Area Transport (LAT)
09-00-2B-00-00-1x       ????    	DEC Experimental
09-00-2B-01-00-01       8038    	DEC LanBridge Hello packets
09-00-2B-02-00-00       ????    	DEC DNA Lev. 2 Routing Layer routers?
09-00-2B-02-01-00       803C?   	DEC DNA Naming Service Advertisement?
09-00-2B-02-01-01       803C?   	DEC DNA Naming Service Solicitation?
09-00-2B-02-01-02       803E?   	DEC DNA Time Service?
09-00-2B-03-xx-xx       ????    	DEC default filtering by bridges?
09-00-2B-04-00-00       8041?   	DEC Local Area Sys. Transport (LAST)?
09-00-2B-23-00-00       803A?   	DEC Argonaut Console?
09-00-4E-00-00-02?      8137?   	Novell IPX
09-00-56-00-00-00-      ????    	Stanford reserved
09-00-56-FE-FF-FF
09-00-56-FF-00-00-      805C    	Stanford V Kernel, version 6.0
09-00-56-FF-FF-FF
09-00-77-00-00-01       ????    	Retix spanning tree bridges
09-00-7C-02-00-05       8080?   	Vitalink diagnostics
09-00-7C-05-00-01       8080?   	Vitalink gateway?
0D-1E-15-BA-DD-06       ????    	HP
AB-00-00-01-00-00       6001    	DEC Maintenance Operation Protocol
AB-00-00-02-00-00       6002    	DEC Maintenance Operation Protocol
AB-00-00-03-00-00       6003    	DECNET Phase IV end node Hello
AB-00-00-04-00-00       6003    	DECNET Phase IV Router Hello packets
AB-00-00-05-00-00       ????    	Reserved DEC through
AB-00-03-FF-FF-FF
AB-00-03-00-00-00       6004    	DEC Local Area Transport (LAT) - old
AB-00-04-00-xx-xx       ????    	Reserved DEC customer private use
AB-00-04-01-xx-yy       6007    	DEC Local Area VAX Cluster groups
CF-00-00-00-00-00       9000    	Ethernet Configuration Test protocol (Loopback)

Broadcast Address:

MAC Address 		Type Field	Description
FF-FF-FF-FF-FF-FF       0600    	XNS packets, Hello or gateway search?
FF-FF-FF-FF-FF-FF       0800    	IP (e.g. RWHOD via UDP) as needed
FF-FF-FF-FF-FF-FF       0804    	CHAOS
FF-FF-FF-FF-FF-FF       0806    	ARP (for IP and CHAOS) as needed
FF-FF-FF-FF-FF-FF       0BAD    	Banyan
FF-FF-FF-FF-FF-FF       1600    	VALID packets, Hello or gateway
FF-FF-FF-FF-FF-FF       8035    	Reverse ARP
FF-FF-FF-FF-FF-FF       807C    	Merit Internodal (INP)
FF-FF-FF-FF-FF-FF       809B    	EtherTalk

Introduction to Data Communications
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