
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.  The multicast addressess are in the range
224.0.0.0 through 239.255.255.255. 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                                [Farinacci]
224.0.0.11 Mobile-Agents                            [Bill Simpson]
224.0.0.12 DHCP Server / Relay Agent                     [RFC1884]
224.0.0.13 All PIM Routers                             [Farinacci]
224.0.0.14 RSVP-ENCAPSULATION                             [Braden]
224.0.0.15 all-cbt-routers                             [Ballardie]
224.0.0.16 designated-sbm				   [Baker]
224.0.0.17 all-sbms					   [Baker]
224.0.0.18 VRRP                                           [Hinden]
224.0.0.19-224.0.0.255 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                                         [Gordon]
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 dantz                                          [Yackle]
224.0.1.39 cisco-rp-announce                           [Farinacci]
224.0.1.40 cisco-rp-discovery                          [Farinacci]
224.0.1.41 gatekeeper                                       [Toga]
224.0.1.42 iberiagames                                   [Marocho]
224.0.1.43 nwn-discovery                                 [Zwemmer]
224.0.1.44 nwn-adaptor                                   [Zwemmer]
224.0.1.45 isma-1                                          [Dunne]
224.0.1.46 isma-2                                          [Dunne]
224.0.1.47 telerate					    [Peng]
224.0.1.48 ciena                                         [Rodbell]
224.0.1.49 dcap-servers                                  [RFC2114]
224.0.1.50 dcap-clients					 [RFC2114]
224.0.1.51 mcntp-directory				    [Rupp]
224.0.1.52 mbone-vcr-directory		               [Holfelder]
224.0.1.53 heartbeat					 [Mamakos]
224.0.1.54 sun-mc-grp					 [DeMoney]
224.0.1.55 extended-sys				           [Poole]
224.0.1.56 pdrncs				      [Wissenbach]
224.0.1.57 tns-adv-multi				   [Albin]
224.0.1.58 vcals-dmu					 [Shindoh]
224.0.1.59 zuba                                          [Jackson]
224.0.1.60 hp-device-disc                               [Albright]
224.0.1.61 tms-production                                 [Gilani]
224.0.1.62 sunscalar					  [Gibson]
224.0.1.63 mmtp-poll                                    [Costales]
224.0.1.64 compaq-peer					   [Volpe]
224.0.1.65 iapp						   [Meier]
224.0.1.66 multihasc-com			       [Brockbank]
224.0.1.67 serv-discovery				  [Honton]
224.0.1.68 mdhcpdisover				           [Patel]
224.0.1.69 MMP-bundle-discovery1                          [Malkin]
224.0.1.70 MMP-bundle-discovery2                          [Malkin]
224.0.1.71 XYPOINT DGPS Data Feed                          [Green]
224.0.1.72 GilatSkySurfer				     [Gal]
224.0.1.73 SharesLive                                     [Rowatt]
224.0.1.74 NorthernData				          [Sheers]
224.0.1.75 SIP				             [Schulzrinne]
224.0.1.76-224.0.1.255  Unassigned                           [JBP]

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

224.0.2.064-224.0.2.095 SIAC MDD Service                     [Tse]
224.0.2.096-224.0.2.127 CoolCast                       [Ballister]
224.0.2.128-224.0.2.191 WOZ-Garage		       [Marquardt]
224.0.2.192-224.0.2.255 SIAC MDD Market Service          [Lamberg]
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]
224.0.10.000-224.0.10.255 DLSw Groups                        [Lee]
224.0.11.000-224.0.11.255 NCC.NET Audio                    [Rubin]
224.0.12.000-224.0.12.063 Microsoft and MSNBC              [Blank]
224.0.13.000-224.0.13.255 UUNET PIPEX  Net News           [Barber]
224.0.14.000-224.0.14.255 NLANR				 [Wessels]
224.0.15.000-224.0.15.255 Hewlett Packard         [van der Meulen]
224.0.16.000-224.0.16.255 XingNet		        [Uusitalo]
224.0.17.000-224.0.17.031 Mercantile & Commodity Exchange [Gilani]
224.0.18.000-224.0.18.255 Dow Jones                         [Peng]
224.0.19.000-224.0.19.063 Walt Disney Company             [Watson]
224.0.19.064-224.0.19.095 Cal Multicast                    [Moran]
224.0.19.096-224.0.19.127 SIAC Market Service                [Roy]
224.0.19.128-224.0.19.191 IIG Multicast                     [Carr]
224.0.252.000-224.0.252.255 Domain Scoped Group	          [Fenner]
224.0.253.000-224.0.253.255 Report Group                  [Fenner]
224.0.254.000-224.0.254.255 Query Group                   [Fenner]
224.0.255.000-224.0.255.255 Border Routers                [Fenner]

224.1.0.0-224.1.255.255  ST Multicast Groups        [RFC1190,KS14]

224.2.0.0-224.2.127.253  Multimedia Conference Calls         [SC3]
224.2.127.254              SAPv1 Announcements               [SC3]
224.2.127.255              SAPv0 Announcements (deprecated)  [SC3]
224.2.128.0-224.2.255.255  SAP Dynamic Assignments           [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]

239.000.000.000-239.255.255.255 Administratively Scoped     [IANA]

239.000.000.000-239.063.255.255 Reserved                    [IANA]
239.064.000.000-239.127.255.255 Reserved                    [IANA]
239.128.000.000-239.191.255.255 Reserved                    [IANA]
239.192.000.000-239.251.255.255 Organization-Local Scope   [Meyer]
239.252.000.000-239.252.255.255 Site-Local Scope (reserved)[Meyer]
239.253.000.000-239.253.255.255 Site-Local Scope (reserved)[Meyer]
239.254.000.000-239.254.255.255 Site-Local Scope (reserved)[Meyer]
239.255.000.000-239.255.255.255 Site-Local Scope           [Meyer]

There is a concept of relative addresses to be used with the scopped
multicast addresses.  These relative addresses are listed here:


Relative  Description                                          Reference
--------- ---------------------------------------------------- ---------
    0     SAP Session Announcement Protocol                    [Handley]
    1     MDHCP Protocol                                         [Patel]

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.

[RFC2114] Chiang, S, J. Lee adn H. Yasuda, "Data Link Switching Client
          Access Protocol", RFC 2114, Cisco, Mitsubishi
	  February 1997.

PEOPLE

[Albin] Jerome Albin, <albin@taec.enet.dec.com>, June 1997.

[Albright] Shivaun Albright, <shivaun_albright@hp.com>, July 1997.

<arnoldm@microsoft.com>

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

[Baker] Fred Baker, <fred@cisco.com>, June 1997.

[Ballardie] Tony Ballardie <A.Ballardie@cs.ucl.ac.uk>, February 1997.

[Ballister] Tom Ballister, <tballister@starguidedigital.com>, July 1997.

[Barber] Tony Barber, <tonyb@pipex.com>, January 1997.

[Blank] Tom Blank, <tomblank@microsoft.com>, November 1996.

[Braden] Bob Braden, <braden@isi.edu>, April 1996.

[Bob Brenner]

[Brockbank] Darcy Brockbank <darcy@hasc.com>, December 1997.

<bloomer@birch.crd.ge.com>

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

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

[Farinacci] Dino Farinacci, <dino@cisco.com>, February 1996.

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

[Carr] Wayne Carr <Wayne_Carr@ccm.intel.com>, December 1997.

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

[Chiang] Steve Chiang <schiang@cisco.com>, January 1997

[Costales] Bryan Costales <bcx@infobeat.com>, September 1997.

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

[Tim Clark]

[DeMoney] Michael DeMoney <demoney@eng.sun.com>, April 1997.

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

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

[Dunne] Stephen Dunne, <sdun@isma.co.uk>, January 1997.

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

[Fenner] Bill Fenner <fenner@parc.xerox.com>, December 1997.

[Farinacci] Dino Farinacci, <dino@cisco.com>, March 1996.

[Gal] Yossi Gal <yossi@gilat.com>, February 1998.

[Gibson] Terry Gibson, <terry.gibson@sun.com>, August 1997.

[Gilani] Asad Gilani, <agilani@nymex.com>, July 1997.

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

[Gordon] Howard Gordon <hgordon@xingtech.com>

[Green] Cliff Green <cgreen@xypoint.com>, February 1998.

[Hinden] Bob Hinden <hinden@Ipsilon.com>, November 1997.

[Holfelder] Wieland Holdfelder, <whd@pi4.informatik.uni-mannheim.de>,

January 1997.

[Honton] Chas Honton, <chas@secant.com>, December 1997.

[IANA] IANA <iana@isi.edu>

[Jackson] Dan Jackson, <jdan@us.ibm.com>, September 1997.

[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] Karen Seo <kseo@bbn.com> 

[Lamberg] Mike Lamberg <mlamberg@siac.com>, February 1997.

[Lee] Choon Lee, <cwl@nsd.3com.com>, April 1996.

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

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

[Andrew Maffei]

[Malkin] Gary Scott Malkin <gmalkin@baynetworks.com>, February 1998.

[Mamakos] Louis Mamakos, <louie@uu.net>, March 1997.

[Marocho] Jose Luis Marocho, <73374.313@compuserve.com>, July 1996.

[Marquardt] Douglas Marquardt, <dmarquar@woz.org>, February 1997.

[Meier] Bob Meier, <meierb@norand.com>, December 1997.

[Meyer] David Meyer, <meyer@ns.uoregon.edu>, January 1997.

[Moran] Ed Moran, <admin@cruzjazz.com>, October 1997.

[John Moy] John Moy <jmoy@casc.com>

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

[Patel] Baiju Patel <baiju_v_patel@mail.intel.com>, January 1998.

[Peng] Wenjie Peng <wpeng@tts.telerate.com>, January 1997.

[Poole] David Poole <davep@extendsys.com>, April 1997.

[Rodbell] Mike Rodbell <mrodbell@ciena.com>, January 1997.

[Guido van Rossum]

[Rowatt] Shane Rowatt <shane.rowatt@star.com.au>, March 1997.

[Roy] George Roy <c/o Bill Owens owens@appliedtheory.com>, October 1997.

[Rubin] David Rubin, <drubin@ncc.net>, August 1996.

[Rupp] Heiko Rupp <hwr@xlink.net>, January 1997.

[SC3] Steve Casner <casner@precept.com>

[Shindoh] Masato Shindoh <jl11456@yamato.ibm.co.jp>, August 1997.

[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.

[Toga] Jim Toga, <jtoga@ibeam.jf.intel.com>, May 1996.

[Tse] Geordie Tse, <gtse@siac.com.>, April 1996.

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

[Uusitalo] Mika Uusitalo <msu@xingtech.com>, April 1997.

[van der Muelen] Ron van der Muelen <ronv@lsid.hp.com> February 1997.

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

[Volpe] Victor Volpe <vvolpe@smtp.microcom.com>, October 1997.

[Watson] Scott Watson <scott@disney.com>, August 1997.

[Wessels] Duane Wessels, <wessels@nlanr.net>, February 1997.

[Wissenbach] Paul Wissenbach, <paulwi@vnd.tek.com>, June 1997.

[Yackle] Dotty Yackle, <ditty_yackle@dantz.com>, February 1996.

[Zwemmer] Arnoud Zwemmer, <arnoud@nwn.nl>, November 1996.

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