Multicast Addresses

INTERNET MULTICAST ADDRESSES

Host Extensions for IP Multicasting [RFC1112] specifies the
extensions required of a host implementation of the Internet Protocol
(IP) to support multicasting.  Current addresses are listed below.

The range of addresses between 224.0.0.0 and 224.0.0.255, inclusive,
is reserved for the use of routing protocols and other low-level
topology discovery or maintenance protocols, such as gateway discovery
and group membership reporting.  Multicast routers should not forward
any multicast datagram with destination addresses in this range,
regardless of its TTL.

224.0.0.0  Base Address (Reserved)                   [RFC1112,JBP]
224.0.0.1  All Systems on this Subnet                [RFC1112,JBP]
224.0.0.2  All Routers on this Subnet                        [JBP]
224.0.0.3  Unassigned                                        [JBP]
224.0.0.4  DVMRP    Routers                          [RFC1075,JBP]
224.0.0.5  OSPFIGP  OSPFIGP All Routers             [RFC1583,JXM1]
224.0.0.6  OSPFIGP  OSPFIGP Designated Routers      [RFC1583,JXM1]
224.0.0.7  ST Routers                               [RFC1190,KS14]
224.0.0.8  ST Hosts                                 [RFC1190,KS14]
224.0.0.9  RIP2 Routers                            [RFC1723,GSM11]
224.0.0.10 IGRP Routers                           [Dino Farinacci]
224.0.0.11 Mobile-Agents                            [Bill Simpson]
224.0.0.12 DHCP Server / Relay Agent                     [RFC1884]
224.0.0.12-224.0.0.255 Unassigned                            [JBP]

224.0.1.0  VMTP Managers Group	                    [RFC1045,DRC3]
224.0.1.1  NTP      Network Time Protocol           [RFC1119,DLM1]
224.0.1.2  SGI-Dogfight                                      [AXC]
224.0.1.3  Rwhod                                             [SXD]
224.0.1.4  VNP                                              [DRC3]       
224.0.1.5  Artificial Horizons - Aviator                     [BXF]
224.0.1.6  NSS - Name Service Server                        [BXS2]
224.0.1.7  AUDIONEWS - Audio News Multicast                 [MXF2]
224.0.1.8  SUN NIS+ Information Service                     [CXM3]
224.0.1.9  MTP Multicast Transport Protocol                  [SXA]
224.0.1.10 IETF-1-LOW-AUDIO                                  [SC3]
224.0.1.11 IETF-1-AUDIO                                      [SC3]
224.0.1.12 IETF-1-VIDEO                                      [SC3]
224.0.1.13 IETF-2-LOW-AUDIO                                  [SC3]
224.0.1.14 IETF-2-AUDIO                                      [SC3]
224.0.1.15 IETF-2-VIDEO                                      [SC3]
224.0.1.16 MUSIC-SERVICE                        [Guido van Rossum]
224.0.1.17 SEANET-TELEMETRY                        [Andrew Maffei]
224.0.1.18 SEANET-IMAGE                            [Andrew Maffei]
224.0.1.19 MLOADD                                         [Braden]
224.0.1.20 any private experiment                            [JBP]
224.0.1.21 DVMRP on MOSPF                               [John Moy]
224.0.1.22 SVRLOC                                       [Veizades]
224.0.1.23 XINGTV                                 <hgxing@aol.com>
224.0.1.24 microsoft-ds                    <arnoldm@microsoft.com>
224.0.1.25 nbc-pro                      <bloomer@birch.crd.ge.com>
224.0.1.26 nbc-pfn                      <bloomer@birch.crd.ge.com>
224.0.1.27 lmsc-calren-1                                    [Uang]
224.0.1.28 lmsc-calren-2                                    [Uang]
224.0.1.29 lmsc-calren-3                                    [Uang]
224.0.1.30 lmsc-calren-4                                    [Uang]
224.0.1.31 ampr-info                                     [Janssen]
224.0.1.32 mtrace                                         [Casner]
224.0.1.33 RSVP-encap-1                                   [Braden]
224.0.1.34 RSVP-encap-2                                   [Braden]
224.0.1.35 SVRLOC-DA                                    [Veizades]
224.0.1.36 rln-server                                       [Kean]
224.0.1.37 proshare-mc                                     [Lewis]
224.0.1.38-224.0.1.255  Unassigned                           [JBP]

224.0.2.1  "rwho" Group (BSD) (unofficial)                   [JBP]
224.0.2.2  SUN RPC PMAPPROC_CALLIT                          [BXE1]

224.0.3.000-224.0.3.255 RFE Generic Service                 [DXS3]
224.0.4.000-224.0.4.255 RFE Individual Conferences          [DXS3]
224.0.5.000-224.0.5.127 CDPD Groups                  [Bob Brenner]
224.0.5.128-224.0.5.255 Unassigned                          [IANA]
224.0.6.000-224.0.6.127 Cornell ISIS Project           [Tim Clark]
224.0.6.128-224.0.6.255 Unassigned			    [IANA]
224.0.7.000-224.0.7.255 Where-Are-You                    [Simpson]
224.0.8.000-224.0.8.255 INTV                               [Tynan]
224.0.9.000-224.0.9.255 Internet Railroad                [Malamud]

224.1.0.0-224.1.255.255  ST Multicast Groups        [RFC1190,KS14]
224.2.0.0-224.2.255.255  Multimedia Conference Calls         [SC3]

224.252.0.0-224.255.255.255 DIS transient groups     [Joel Snyder]

232.0.0.0-232.255.255.255  VMTP transient groups    [RFC1045,DRC3]

These addresses are listed in the Domain Name Service under MCAST.NET
and 224.IN-ADDR.ARPA.

Note that when used on an Ethernet or IEEE 802 network, the 23
low-order bits of the IP Multicast address are placed in the low-order
23 bits of the Ethernet or IEEE 802 net multicast address
1.0.94.0.0.0.  See the section on "IANA ETHERNET ADDRESS BLOCK".

REFERENCES

[RFC1045] Cheriton, D., "VMTP: Versatile Message Transaction
          Protocol Specification", RFC 1045, Stanford University,
          February 1988.

[RFC1075] Waitzman, D., C. Partridge, and S. Deering "Distance Vector
          Multicast Routing Protocol", RFC-1075, BBN STC, Stanford
          University, November 1988.

[RFC1112] Deering, S., "Host Extensions for IP Multicasting",
          STD 5, RFC 1112, Stanford University, August 1989.

[RFC1119] Mills, D., "Network Time Protocol (Version 1), Specification
          and Implementation", STD 12, RFC 1119, University of
          Delaware, July 1988.

[RFC1190] Topolcic, C., Editor, "Experimental Internet Stream
          Protocol, Version 2 (ST-II)", RFC 1190, CIP Working Group,
          October 1990.

[RFC1583] Moy, J., "The OSPF Specification", RFC 1583, Proteon,
          March 1994.

[RFC1723] Malkin, G., "RIP Version 2: Carying Additional Information",
          RFC 1723, Xylogics, November 1994.

[RFC1884] Hinden, R., and S. Deering, "IP Version 6 Addressing
          Architecture", RFC 1884, Ipsilon Networks, Xerox PARC,
          December 1995.

PEOPLE

<arnoldm@microsoft.com>

[AXC] Andrew Cherenson <arc@SGI.COM>

[Braden] Bob Braden, <braden@isi.edu>, January 1995.

[Bob Brenner]

<bloomer@birch.crd.ge.com>

[BXE1] Brendan Eic <brendan@illyria.wpd.sgi.com>

[BXF] Bruce Factor <ahi!bigapple!bruce@uunet.UU.NET>

[BXS2] Bill Schilit <schilit@parc.xerox.com>

[Casner] Steve Casner, <casner@isi.edu>, January 1995.

[CXM3] Chuck McManis <cmcmanis@sun.com>

[Tim Clark]

[DLM1] David Mills <Mills@HUEY.UDEL.EDU>

[DRC3] Dave Cheriton <cheriton@PESCADERO.STANFORD.EDU>

[DXS3] Daniel Steinber <Daniel.Steinberg@Eng.Sun.COM>

[Dino Farinacci] 

[GSM11] Gary S. Malkin <GMALKIN@XYLOGICS.COM>

<hgxing@aol.com>

[IANA] IANA <iana@isi.edu>

[Janssen] Rob Janssen, <rob@pe1chl.ampr.org>, January 1995.

[JBP] Jon Postel <postel@isi.edu>
 
[JXM1] Jim Miner <miner@star.com>

[Kean] Brian Kean, <bkean@dca.com>, August 1995.

[KS14] <mystery contact>

[Lewis] Mark Lewis, <Mark_Lewis@ccm.jf.intel.com>, October 1995.

[Malamud] Carl Malamud, <carl@radio.com>, January 1996.

[Andrew Maffei]

[John Moy] John Moy <jmoy@PROTEON.COM>

[MXF2] Martin Forssen <maf@dtek.chalmers.se>

[Guido van Rossum]

[SC3] Steve Casner <casner@isi.edu>

[Simpson] Bill Simpson <bill.simpson@um.cc.umich.edu> November 1994.

[Joel Snyder]

[SXA] Susie Armstrong <Armstrong.wbst128@XEROX.COM>

[SXD] Steve Deering <deering@PARC.XEROX.COM>

[tynan] Dermot Tynan, <dtynan@claddagh.ie>, August 1995.

[Uang] Yea Uang <uang@force.decnet.lockheed.com> November 1994.

[Veizades] John Veizades,  <veizades@tgv.com>, May 1995.

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