Source: IANA Assignments
Internet Assigned Numbers Authority IANA IPv4 Address Space Registry Last Updated 2023-12-18 Registration Procedure(s) Allocations to RIRs are made in line with the Global Policy published at [http://www.icann.org/en/resources/policy/global-addressing]. All other assignments require IETF Review. Description The allocation of Internet Protocol version 4 (IPv4) address space to various registries is listed here. Originally, all the IPv4 address spaces was managed directly by the IANA. Later parts of the address space were allocated to various other registries to manage for particular purposes or regional areas of the world. RFC 1466 [RFC1466] documents most of these allocations. Reference [RFC7249] Available Formats [IMG] CSV [IMG] XML [IMG] HTML [IMG] Plain text Prefix Designation Date WHOIS RDAP Status [1] Note 000/8 IANA - Local Identification 1981-09 RESERVED [2][3] 001/8 APNIC 2010-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 002/8 RIPE NCC 2009-09 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 003/8 Administered by ARIN 1994-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 004/8 Administered by ARIN 1992-12 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 005/8 RIPE NCC 2010-11 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 006/8 Army Information Systems Center 1994-02 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 007/8 Administered by ARIN 1995-04 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 008/8 Administered by ARIN 1992-12 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 009/8 Administered by ARIN 1992-08 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 010/8 IANA - Private Use 1995-06 RESERVED [4] 011/8 DoD Intel Information Systems 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 012/8 AT&T Bell Laboratories 1995-06 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 013/8 Administered by ARIN 1991-09 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 014/8 APNIC 2010-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED [5] 015/8 Administered by ARIN 1994-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 016/8 Administered by ARIN 1994-11 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 017/8 Apple Computer Inc. 1992-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 018/8 Administered by ARIN 1994-01 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 019/8 Ford Motor Company 1995-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 020/8 Administered by ARIN 1994-10 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 021/8 DDN-RVN 1991-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 022/8 Defense Information Systems Agency 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 023/8 ARIN 2010-11 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 024/8 ARIN 2001-05 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 025/8 Administered by RIPE NCC 1995-01 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 026/8 Defense Information Systems Agency 1995-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 027/8 APNIC 2010-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 028/8 DSI-North 1992-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 029/8 Defense Information Systems Agency 1991-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 030/8 Defense Information Systems Agency 1991-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 031/8 RIPE NCC 2010-05 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 032/8 Administered by ARIN 1994-06 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 033/8 DLA Systems Automation Center 1991-01 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 034/8 Administered by ARIN 1993-03 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 035/8 Administered by ARIN 1994-04 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 036/8 APNIC 2010-10 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 037/8 RIPE NCC 2010-11 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 038/8 PSINet, Inc. 1994-09 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 039/8 APNIC 2011-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 040/8 Administered by ARIN 1994-06 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 041/8 AFRINIC 2005-04 whois.afrinic.net https://rdap.afrinic.net/rdap/ ALLOCATED http://rdap.afrinic.net/rdap/ 042/8 APNIC 2010-10 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 043/8 Administered by APNIC 1991-01 whois.apnic.net https://rdap.apnic.net/ LEGACY 044/8 Administered by ARIN 1992-07 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 045/8 Administered by ARIN 1995-01 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 046/8 RIPE NCC 2009-09 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 047/8 Administered by ARIN 1991-01 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 048/8 Administered by ARIN 1995-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 049/8 APNIC 2010-08 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 050/8 ARIN 2010-02 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 051/8 Administered by RIPE NCC 1994-08 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 052/8 Administered by ARIN 1991-12 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 053/8 Daimler AG 1993-10 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 054/8 Administered by ARIN 1992-03 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 055/8 DoD Network Information Center 1995-04 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 056/8 Administered by ARIN 1994-06 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 057/8 Administered by RIPE NCC 1995-05 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 058/8 APNIC 2004-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 059/8 APNIC 2004-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 060/8 APNIC 2003-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 061/8 APNIC 1997-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 062/8 RIPE NCC 1997-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 063/8 ARIN 1997-04 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 064/8 ARIN 1999-07 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 065/8 ARIN 2000-07 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 066/8 ARIN 2000-07 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 067/8 ARIN 2001-05 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 068/8 ARIN 2001-06 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 069/8 ARIN 2002-08 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 070/8 ARIN 2004-01 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 071/8 ARIN 2004-08 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 072/8 ARIN 2004-08 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 073/8 ARIN 2005-03 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 074/8 ARIN 2005-06 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 075/8 ARIN 2005-06 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 076/8 ARIN 2005-06 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 077/8 RIPE NCC 2006-08 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 078/8 RIPE NCC 2006-08 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 079/8 RIPE NCC 2006-08 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 080/8 RIPE NCC 2001-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 081/8 RIPE NCC 2001-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 082/8 RIPE NCC 2002-11 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 083/8 RIPE NCC 2003-11 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 084/8 RIPE NCC 2003-11 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 085/8 RIPE NCC 2004-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 086/8 RIPE NCC 2004-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 087/8 RIPE NCC 2004-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 088/8 RIPE NCC 2004-04 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 089/8 RIPE NCC 2005-06 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 090/8 RIPE NCC 2005-06 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 091/8 RIPE NCC 2005-06 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 092/8 RIPE NCC 2007-03 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 093/8 RIPE NCC 2007-03 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 094/8 RIPE NCC 2007-07 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 095/8 RIPE NCC 2007-07 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 096/8 ARIN 2006-10 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 097/8 ARIN 2006-10 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 098/8 ARIN 2006-10 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 099/8 ARIN 2006-10 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 100/8 ARIN 2010-11 whois.arin.net https://rdap.arin.net/registry ALLOCATED [6] http://rdap.arin.net/registry 101/8 APNIC 2010-08 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 102/8 AFRINIC 2011-02 whois.afrinic.net https://rdap.afrinic.net/rdap/ ALLOCATED http://rdap.afrinic.net/rdap/ 103/8 APNIC 2011-02 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 104/8 ARIN 2011-02 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 105/8 AFRINIC 2010-11 whois.afrinic.net https://rdap.afrinic.net/rdap/ ALLOCATED http://rdap.afrinic.net/rdap/ 106/8 APNIC 2011-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 107/8 ARIN 2010-02 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 108/8 ARIN 2008-12 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 109/8 RIPE NCC 2009-01 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 110/8 APNIC 2008-11 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 111/8 APNIC 2008-11 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 112/8 APNIC 2008-05 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 113/8 APNIC 2008-05 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 114/8 APNIC 2007-10 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 115/8 APNIC 2007-10 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 116/8 APNIC 2007-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 117/8 APNIC 2007-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 118/8 APNIC 2007-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 119/8 APNIC 2007-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 120/8 APNIC 2007-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 121/8 APNIC 2006-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 122/8 APNIC 2006-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 123/8 APNIC 2006-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 124/8 APNIC 2005-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 125/8 APNIC 2005-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 126/8 APNIC 2005-01 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 127/8 IANA - Loopback 1981-09 RESERVED [7] 128/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 129/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 130/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 131/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 132/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 133/8 Administered by APNIC 1997-03 whois.apnic.net https://rdap.apnic.net/ LEGACY 134/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 135/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 136/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 137/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 138/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 139/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 140/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 141/8 Administered by RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 142/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 143/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 144/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 145/8 Administered by RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 146/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 147/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 148/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 149/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 150/8 Administered by APNIC 1993-05 whois.apnic.net https://rdap.apnic.net/ LEGACY 151/8 Administered by RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 152/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 153/8 Administered by APNIC 1993-05 whois.apnic.net https://rdap.apnic.net/ LEGACY 154/8 Administered by AFRINIC 1993-05 whois.afrinic.net https://rdap.afrinic.net/rdap/ LEGACY http://rdap.afrinic.net/rdap/ 155/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 156/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 157/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 158/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 159/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 160/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 161/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 162/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 163/8 Administered by APNIC 1993-05 whois.apnic.net https://rdap.apnic.net/ LEGACY 164/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 165/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 166/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 167/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 168/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 169/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY [8] http://rdap.arin.net/registry 170/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 171/8 Administered by APNIC 1993-05 whois.apnic.net https://rdap.apnic.net/ LEGACY 172/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY [9] http://rdap.arin.net/registry 173/8 ARIN 2008-02 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 174/8 ARIN 2008-02 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 175/8 APNIC 2009-08 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 176/8 RIPE NCC 2010-05 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 177/8 LACNIC 2010-06 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 178/8 RIPE NCC 2009-01 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 179/8 LACNIC 2011-02 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 180/8 APNIC 2009-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 181/8 LACNIC 2010-06 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 182/8 APNIC 2009-08 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 183/8 APNIC 2009-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 184/8 ARIN 2008-12 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 185/8 RIPE NCC 2011-02 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 186/8 LACNIC 2007-09 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 187/8 LACNIC 2007-09 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 188/8 Administered by RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ LEGACY 189/8 LACNIC 1995-06 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 190/8 LACNIC 1995-06 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 191/8 Administered by LACNIC 1993-05 whois.lacnic.net https://rdap.lacnic.net/rdap/ LEGACY 192/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY [10][11] http://rdap.arin.net/registry 193/8 RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 194/8 RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 195/8 RIPE NCC 1993-05 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 196/8 Administered by AFRINIC 1993-05 whois.afrinic.net https://rdap.afrinic.net/rdap/ LEGACY http://rdap.afrinic.net/rdap/ 197/8 AFRINIC 2008-10 whois.afrinic.net https://rdap.afrinic.net/rdap/ ALLOCATED http://rdap.afrinic.net/rdap/ 198/8 Administered by ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry LEGACY [12] http://rdap.arin.net/registry 199/8 ARIN 1993-05 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 200/8 LACNIC 2002-11 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 201/8 LACNIC 2003-04 whois.lacnic.net https://rdap.lacnic.net/rdap/ ALLOCATED 202/8 APNIC 1993-05 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 203/8 APNIC 1993-05 whois.apnic.net https://rdap.apnic.net/ ALLOCATED [13] 204/8 ARIN 1994-03 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 205/8 ARIN 1994-03 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 206/8 ARIN 1995-04 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 207/8 ARIN 1995-11 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 208/8 ARIN 1996-04 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 209/8 ARIN 1996-06 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 210/8 APNIC 1996-06 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 211/8 APNIC 1996-06 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 212/8 RIPE NCC 1997-10 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 213/8 RIPE NCC 1993-10 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 214/8 US-DOD 1998-03 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 215/8 US-DOD 1998-03 whois.arin.net https://rdap.arin.net/registry LEGACY http://rdap.arin.net/registry 216/8 ARIN 1998-04 whois.arin.net https://rdap.arin.net/registry ALLOCATED http://rdap.arin.net/registry 217/8 RIPE NCC 2000-06 whois.ripe.net https://rdap.db.ripe.net/ ALLOCATED 218/8 APNIC 2000-12 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 219/8 APNIC 2001-09 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 220/8 APNIC 2001-12 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 221/8 APNIC 2002-07 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 222/8 APNIC 2003-02 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 223/8 APNIC 2010-04 whois.apnic.net https://rdap.apnic.net/ ALLOCATED 224/8 Multicast 1981-09 RESERVED [14] 225/8 Multicast 1981-09 RESERVED [14] 226/8 Multicast 1981-09 RESERVED [14] 227/8 Multicast 1981-09 RESERVED [14] 228/8 Multicast 1981-09 RESERVED [14] 229/8 Multicast 1981-09 RESERVED [14] 230/8 Multicast 1981-09 RESERVED [14] 231/8 Multicast 1981-09 RESERVED [14] 232/8 Multicast 1981-09 RESERVED [14] 233/8 Multicast 1981-09 RESERVED [14] 234/8 Multicast 1981-09 RESERVED [14][15] 235/8 Multicast 1981-09 RESERVED [14] 236/8 Multicast 1981-09 RESERVED [14] 237/8 Multicast 1981-09 RESERVED [14] 238/8 Multicast 1981-09 RESERVED [14] 239/8 Multicast 1981-09 RESERVED [14][16] 240/8 Future use 1981-09 RESERVED [17] 241/8 Future use 1981-09 RESERVED [17] 242/8 Future use 1981-09 RESERVED [17] 243/8 Future use 1981-09 RESERVED [17] 244/8 Future use 1981-09 RESERVED [17] 245/8 Future use 1981-09 RESERVED [17] 246/8 Future use 1981-09 RESERVED [17] 247/8 Future use 1981-09 RESERVED [17] 248/8 Future use 1981-09 RESERVED [17] 249/8 Future use 1981-09 RESERVED [17] 250/8 Future use 1981-09 RESERVED [17] 251/8 Future use 1981-09 RESERVED [17] 252/8 Future use 1981-09 RESERVED [17] 253/8 Future use 1981-09 RESERVED [17] 254/8 Future use 1981-09 RESERVED [17] 255/8 Future use 1981-09 RESERVED [17][18] Footnotes [1] Indicates the status of address blocks as follows: RESERVED: designated by the IETF for specific non-global-unicast purposes as noted. LEGACY: allocated by the central Internet Registry (IR) prior to the Regional Internet Registries (RIRs). This address space is now administered by individual RIRs as noted, including maintenance of WHOIS Directory and reverse DNS records. Assignments from these blocks are distributed globally on a regional basis. ALLOCATED: delegated entirely to specific RIR as indicated. UNALLOCATED: not yet allocated or reserved. [2] 0.0.0.0/8 reserved for self-identification [RFC791], section 3.2. Reserved by protocol. For authoritative registration, see [IANA registry iana-ipv4-special-registry]. [3] 0.0.0.0/32 reserved for self-identification [RFC1122], section 3.2.1.3. Reserved by protocol. For authoritative registration, see [IANA registry iana-ipv4-special-registry]. [4] Reserved for Private-Use Networks [RFC1918]. Complete registration details for 10.0.0.0/8 are found in [IANA registry iana-ipv4-special-registry]. [5] This was reserved for Public Data Networks [RFC1356]. See [IANA registry public-data-network-numbers]. It was recovered in February 2008 and was subsequently allocated to APNIC in April 2010. [6] 100.64.0.0/10 reserved for Shared Address Space [RFC6598]. Complete registration details for 100.64.0.0/10 are found in [IANA registry iana-ipv4-special-registry]. [7] 127.0.0.0/8 reserved for Loopback [RFC1122], section 3.2.1.3. Reserved by protocol. For authoritative registration, see [IANA registry iana-ipv4-special-registry]. [8] 169.254.0.0/16 reserved for Link Local [RFC3927]. Reserved by protocol. For authoritative registration, see [IANA registry iana-ipv4-special-registry]. [9] 172.16.0.0/12 reserved for Private-Use Networks [RFC1918]. Complete registration details are found in [IANA registry iana-ipv4-special-registry]. [10] 192.0.2.0/24 reserved for TEST-NET-1 [RFC5737]. Complete registration details for 192.0.2.0/24 are found in [IANA registry iana-ipv4-special-registry]. 192.88.99.0/24 reserved for 6to4 Relay Anycast [RFC7526] Complete registration details for 192.88.99.0/24 are found in [IANA registry iana-ipv4-special-registry]. 192.88.99.2/32 reserved for 6a44 Relay Anycast [RFC6751] (possibly collocated with 6to4 Relay at 192.88.99.1/32 - see [RFC7526]) 192.168.0.0/16 reserved for Private-Use Networks [RFC1918]. Complete registration details for 192.168.0.0/16 are found in [IANA registry iana-ipv4-special-registry]. [11] 192.0.0.0/24 reserved for IANA IPv4 Special Purpose Address Registry [RFC5736]. Complete registration details for 192.0.0.0/24 are found in [IANA registry iana-ipv4-special-registry]. [12] 198.18.0.0/15 reserved for Network Interconnect Device Benchmark Testing [RFC2544]. Complete registration details for 198.18.0.0/15 are found in [IANA registry iana-ipv4-special-registry]. 198.51.100.0/24 reserved for TEST-NET-2 [RFC5737]. Complete registration details for 198.51.100.0/24 are found in [IANA registry iana-ipv4-special-registry]. [13] 203.0.113.0/24 reserved for TEST-NET-3 [RFC5737]. Complete registration details for 203.0.113.0/24 are found in [IANA registry iana-ipv4-special-registry]. [14] Multicast (formerly "Class D") [RFC5771] registered in [IANA registry multicast-addresses] [15] Unicast-Prefix-Based IPv4 Multicast Addresses [RFC6034] [16] Administratively Scoped IP Multicast [RFC2365] [17] Reserved for future use (formerly "Class E") [RFC1112]. Reserved by protocol. For authoritative registration, see [IANA registry iana-ipv4-special-registry]. [18] 255.255.255.255 is reserved for "limited broadcast" destination address [RFC919] and [RFC922]. Complete registration details for 255.255.255.255/32 are found in [IANA registry iana-ipv4-special-registry]. Licensing Terms
Source: RFC3330
Excerpt from RFC3330 (IANA, September 2002) Summary Table Address Block Present Use Reference ---------------------------------------------------------------------- 0.0.0.0/8 "This" Network [RFC1700, page 4] 10.0.0.0/8 Private-Use Networks [RFC1918] 14.0.0.0/8 Public-Data Networks [RFC1700, page 181] 24.0.0.0/8 Cable Television Networks -- 39.0.0.0/8 Reserved but subject to allocation [RFC1797] 127.0.0.0/8 Loopback [RFC1700, page 5] 128.0.0.0/16 Reserved but subject to allocation -- 169.254.0.0/16 Link Local -- 172.16.0.0/12 Private-Use Networks [RFC1918] 191.255.0.0/16 Reserved but subject to allocation -- 192.0.0.0/24 Reserved but subject to allocation -- 192.0.2.0/24 Test-Net 192.88.99.0/24 6to4 Relay Anycast [RFC3068] 192.168.0.0/16 Private-Use Networks [RFC1918] 198.18.0.0/15 Network Interconnect Device Benchmark Testing [RFC2544] 223.255.255.0/24 Reserved but subject to allocation -- 224.0.0.0/4 Multicast [RFC3171] 240.0.0.0/4 Reserved for Future Use [RFC1700, page 4]