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IPv4 (Internet Protocol version 4)

IPv4-addresses

see also: IPv6-addresses

0.0.0.0/32unspecified address (like :: in IPv6); see RFC1700
0.0.0.0/8"This host on this network"; see RFC1122, section 3.2.1.3 (since 1981-Sep)
10.0.0.0/8private address space which can be used without registering, but must not be routed into or within the internet; see RFC1918 (since 1996-Feb)
44.0.0.0/8amateur radio
100.64.0.0/10shared address space, e.g. for carrier-grade NAT (CGN); see RFC6598 (since 2012-Apr)
127.0.0.0/8loopback-addresses (not to appear "on wire"); see RFC1122 (since 1981-Sep)
127.0.0.1localhost (like ::1 in IPv6)
141.24.0.0/16TU Ilmenau
169.254.0.0/16link local auto-config (APIPA, zeroconf), for local net use only; see RFC3330 (since 2002-Sep)
172.16.0.0/12private address space which can be used without registering, but must not be routed into or within the internet; see RFC1918 (since 1996-Feb)
192.0.0.0/24IETF Protocol Assignments; see RFC6890, section 2.1 (since 2010-Jan)
192.0.0.0/29DS-lite; see RFC6333 (since 2011-Jun)
192.0.2.0/24Documentation (TEST-NET-1); see RFC5737 (since 2010-Jan)
192.88.99.0/246to4 relay anycast, connecting to 2002::/16 resp. 2002:c058:6301:: in IPv6; see RFC3068 and RFC3330 (since 2001-Jun)
192.168.0.0/16private address space which can be used without registering, but must not be routed into or within the internet; see RFC1918 (since 1996-Feb)
198.18.0.0/15benchmarking; see RFC2544 (since 1999-Mar)
198.51.100.0/24Documentation (TEST-NET-2); see RFC5737 (since 2010-Jan)
203.0.113.0/24Documentation (TEST-NET-3); see RFC5737 (since 2010-Jan)
224.0.0.0/4multicast; see RFC3171
240.0.0.0/4reserved; see RFC1112, section 4 (since 1989-Aug)
255.255.255.255/32limited broadcast, must not be routed into or within the internet; see RFC0919, section 7 (since 1984-Oct)

see also: IPv6-addresses, and the external page heise Netze - IP-Adressen