| 0000-05DC | IEEE802.3 Length Field (0.:1500.) |
| 0101-01FF | Experimental |
| 0200 | Xerox PUP (conflicts with 802.3 Length Field range) (see 0A00) |
| 0201 | Xerox PUP Address Translation (conflicts ...) (see 0A01) |
| 0400 | Nixdorf (conflicts with 802.3 Length Field) |
| 0600 | Xerox NS IDP |
| 0601 | XNS Address Translation (3Mb only) |
| 0800 | DOD Internet Protocol (IP) version 4 |
| 0801 | X.75 Internet |
| 0802 | NBS Internet |
| 0803 | ECMA Internet |
| 0804 | CHAOSnet |
| 0805 | X.25 Level 3 |
| 0806 | Address Resolution Protocol (ARP) (for IP and for CHAOS) |
| 0807 | XNS Compatibility |
| 081C | Symbolics Private |
| 0888-088A | Xyplex |
| 0900 | Ungermann-Bass network debugger |
| 0A00 | Xerox IEEE802.3 PUP |
| 0A01 | Xerox IEEE802.3 PUP Address Translation |
| 0BAD | Banyan Systems |
| 0BAF | Banyon VINES Echo |
| 1000 | Berkeley Trailer negotiation |
| 1001-100F | Berkeley Trailer encapsulation for IP |
| 1234 | DCA - Multicast |
| 1600 | VALID system protocol |
| 1989 | Artificial Horizons ("Aviator" dogfight simulator [on Sun]) |
| 1995 | Datapoint Corporation (RCL lan protocol) |
| 3C00 | 3Com NBP virtual circuit datagram (like XNS SPP) not registered |
| 3C01 | 3Com NBP System control datagram not registered |
| 3C02 | 3Com NBP Connect request (virtual cct) not registered |
| 3C03 | 3Com NBP Connect repsonse not registered |
| 3C04 | 3Com NBP Connect complete not registered |
| 3C05 | 3Com NBP Close request (virtual cct) not registered |
| 3C06 | 3Com NBP Close response not registered |
| 3C07 | 3Com NBP Datagram (like XNS IDP) not registered |
| 3C08 | 3Com NBP Datagram broadcast not registered |
| 3C09 | 3Com NBP Claim NetBIOS name not registered |
| 3C0A | 3Com NBP Delete Netbios name not registered |
| 3C0B | 3Com NBP Remote adaptor status request not registered |
| 3C0C | 3Com NBP Remote adaptor response not registered |
| 3C0D | 3Com NBP Reset not registered |
| 4242 | PCS Basic Block Protocol |
| 424C | Information Modes Little Big LAN diagnostic |
| 4321 | THD - Diddle |
| 4C42 | Information Modes Little Big LAN |
| 5208 | BBN Simnet Private |
| 6000 | DEC unassigned |
| 6001 | DEC Maintenance Operation Protocol (MOP) Dump/Load Assistance |
| 6002 | DEC Maintenance Operation Protocol (MOP) Remote Console |
| 6003 | DECNET Phase IV |
| 6004 | DEC Local Area Transport (LAT) |
| 6005 | DEC diagnostic protocol (at interface initialization) |
| 6006 | DEC customer protocol |
| 6007 | DEC Local Area VAX Cluster (LAVC) |
| 6008 | DEC AMBER |
| 6009 | DEC MUMPS |
| 6010-6014 | 3Com Corporation |
| 7000 | Ungermann-Bass download |
| 7001 | Ungermann-Bass NIUs |
| 7002 | Ungermann-Bass diagnostic/loopback |
| 7003 | Ungermann-Bass (NMC to/from UB Bridge) |
| 7005 | Ungermann-Bass Bridge Spanning Tree |
| 7007 | OS/9 Microware |
| 7009 | OS/9 Net |
| 7020-7029 | LRT (England) (now Sintrom) |
| 7030 | Racal-Interlan |
| 7031 | Prime NTS (Network Terminal Service) |
| 7034 | Cabletron |
| 8003 | Cronus VLN |
| 8004 | Cronus Direct |
| 8005 | HP Probe protocol |
| 8006 | Nestar |
| 8008 | AT&T/Stanford Univ. Local use |
| 8010 | Excelan |
| 8013 | Silicon Graphics diagnostic |
| 8014 | Silicon Graphics network games |
| 8015 | Silicon Graphics reserved |
| 8016 | Silicon Graphics XNS NameServer |
| 8019 | Apollo DOMAIN |
| 802E | Tymshare |
| 802F | Tigan |
| 8035 | Reverse Address Resolution Protocol (RARP) |
| 8036 | Aeonic Systems |
| 8037 | IPX (Novell Netware) |
| 8038 | DEC LanBridge Management |
| 8039 | DEC DSM/DDP |
| 803A | DEC Argonaut Console |
| 803B | DEC VAXELN |
| 803C | DEC DNS Naming Service |
| 803D | DEC Ethernet CSMA/CD Encryption Protocol |
| 803E | DEC Distributed Time Service |
| 803F | DEC LAN Traffic Monitor Protocol |
| 8040 | DEC PATHWORKS DECnet NETBIOS Emulation |
| 8041 | DEC Local Area System Transport |
| 8042 | DEC unassigned |
| 8044 | Planning Research Corp. |
| 8046-8047 | AT&T |
| 8048 | DEC Availability Manager for Distributed Systems DECamds (but someone at DEC says not) |
| 8049 | ExperData |
| 805B | VMTP (Versatile Message Transaction Protocol |
| 805C | Stanford V Kernel |
| 805D | Evans & Sutherland |
| 8060 | Little Machines |
| 8062 | Counterpoint Computers |
| 8065-8066 | University of Mass. at Amherst |
| 8067 | Veeco Integrated Automation |
| 8068 | General Dynamics |
| 8069 | AT&T |
| 806A | Autophon |
| 806C | ComDesign |
| 806D | Compugraphic Corporation |
| 806E- | 8077 Landmark Graphics Corporation |
| 807A | Matra |
| 807B | Dansk Data Elektronik |
| 807C | Merit Internodal (or Univ of Michigan) |
| 807D-807F | Vitalink Communications |
| 8080 | Vitalink TransLAN III Management |
| 8081-8083 | Counterpoint Computers |
| 8088-808A | Xyplex |
| 809B | EtherTalk (AppleTalk over Ethernet) |
| 809C-809E | Datability |
| 809F | Spider Systems Ltd. |
| 80A3 | Nixdorf Computers |
| 80A4-80B3 | Siemens Gammasonics Inc. |
| 80C0-80C3 | DCA (Digital Comm. Assoc.) Data Exchange Cluster |
| 80C6 | Pacer Software |
| 80C7 | Applitek Corporation |
| 80C8-80CC | Intergraph Corporation |
| 80CD-80CE | Harris Corporation |
| 80CF-80D2 | Taylor Instrument |
| 80D3-80D4 | Rosemount Corporation |
| 80D5 | IBM SNA Services over Ethernet |
| 80DD | Varian Associates |
| 80DE-80DF | TRFS (Integrated Solutions Transparent Remote File System) |
| 80E0-80E3 | Allen-Bradley |
| 80E4-80F0 | Datability |
| 80F2 | Retix |
| 80F3 | AppleTalk Address Resolution Protocol (AARP) |
| 80F4-80F5 | Kinetics |
| 80F7 | Apollo Computer |
| 80FF-8101 | Wellfleet Communications |
| 8102 | Wellfleet; BOFL (Breath OF Life) pkts [every 5-10 secs.] |
| 8103 | Wellfleet Communications |
| 8107-8109 | Symbolics Private |
| 812B | Talaris |
| 8130 | Waterloo Microsystems Inc. |
| 8131 | VG Laboratory Systems |
| 8137 | Novell (old) NetWare IPX (ECONFIG E option) |
| 8138 | Novell |
| 8139-813D | KTI |
| 813F | M/MUMPS data sharing |
| 8145 | Vrije Universiteit (NL) Amoeba 4 RPC (obsolete) |
| 8146 | Vrije Universiteit (NL) FLIP (Fast Local Internet Protocol) |
| 8147 | Vrije Universiteit (NL) [reserved] |
| 814C | SNMP over Ethernet (see RFC1089) |
| 814F | Technically Elite Concepts Network Professor |
| 8191 | PowerLAN NetBIOS/NetBEUI (PC) |
| 817D | XTP |
| 81D6 | Artisoft Lantastic |
| 81D7 | Artisoft Lantastic |
| 8203-8205 | QNX Software Systems Ltd. |
| 8390 | Accton Technologies (unregistered) |
| 852B | Talaris multicast |
| 8582 | Kalpana |
| 86DD | IP version 6 |
| 8739 | Control Technology Inc. RDP Without IP |
| 873A | Control Technology Inc. Mcast Industrial Ctrl Proto. |
| 873B | Control Technology Inc. Proprietary |
| 873C | Control Technology Inc. Proprietary |
| 8820 | Hitachi Cable (Optoelectronic Systems Laboratory) |
| 8856 | Axis Communications AB proprietary bootstrap/config |
| 8888 | HP LanProbe test |
| 9000 | Loopback (Configuration Test Protocol) |
| 9001 | 3Com (Formerly Bridge Communications) |
| 9002 | 3Com (Formerly Bridge Communications) |
| 9003 | 3Com (Formerly Bridge Communications) |
| AAAA | DECNET Used by VAX 6220 DEBNI |
| FAF5 | Sonix Arpeggio |
| FF00 | BBN VITAL-LanBridge cache wakeups
|
