IP Reserved Loopback and Private Addresses
IPRange Start Address |
Range End Address |
“Classful” Address Equivalent |
Classless Address Equivalent |
Description |
|---|---|---|---|---|
0.0.0.0 |
0.255.255.255 |
Class A network 0.x.x.x |
0/8 |
Reserved. |
10.0.0.0 |
10.255.255.255 |
Class A network 10.x.x.x |
10/8 |
Class A private address block. |
127.0.0.0 |
127.255.255.255 |
Class A network 127.x.x.x |
127/8 |
Loopback address block. |
128.0.0.0 |
128.0.255.255 |
Class B network 128.0.x.x |
128.0/16 |
Reserved. |
169.254.0.0 |
169.254.255.255 |
Class B network 169.254.x.x |
169.254/16 |
Class B private address block reserved for automatic private address allocation. See the section on DHCP for details. |
172.16.0.0 |
172.31.255.255 |
16 contiguous Class B networks from 172.16.x.x through 172.31.x.x |
172.16/12 |
Class B private address blocks. |
191.255.0.0 |
191.255.255.255 |
Class B network 191.255.x.x |
191.255/16 |
Reserved. |
192.0.0.0 |
192.0.0.255 |
Class C network 192.0.0.x |
192.0.0/24 |
Reserved. |
192.168.0.0 |
192.168.255.255 |
256 contiguous Class C networks from 192.168.0.x through 192.168.255.x |
192.168/16 |
Class C private address blocks. |
223.255.255.0 |
223.255.255.255 |
Class C network 223.255.255.x |
223.255.255/24 |
Reserved. |
Source: http://www.tcpipguide.com/free/t_IPReservedPrivateandLoopbackAddresses-3.htm