Address Block Present Use  Reference 0.0.0.0/8           “This” Network             RFC 1122, Section 3.2.1.3 10.0.0.0/8          Private-Use Networks       RFC 1918 127.0.0.0/8         Loopback                   RFC 1122, Section 3.2.1.3 169.254.0.0/16      Link Local                 RFC 3927 172.16.0.0/12       Private-Use Networks       RFC 1918 192.0.0.0/24        IETF Protocol Assignments  RFC 5736 192.0.2.0/24        TEST-NET-1                 RFC 5737 192.88.99.0/24      6to4 Relay Anycast         RFC 3068 192.168.0.0/16      Private-Use Networks       RFC 1918 198.18.0.0/15       Network Interconnect RFC 2544    Device Benchmark Testing   RFC 2544 198.51.100.0/24     TEST-NET-2                 RFC 5737 203.0.113.0/24      TEST-NET-3                 RFC 5737 224.0.0.0/4         Multicast                  RFC 3171 240.0.0.0/4         Reserved for Future Use    RFC 1112, Section 4 255.255.255.255/32   Limited Broadcast          RFC 919, Section 7     RFC 922, Section 7