[INDEX], [Class A], [Class B], [Class C]

IP Network Numbers - Class C

Class C networks (192.0.0.x to 223.255.255.x) require 24 bits to identify the network, leaving 8 to identity the host, and are also referred to as /24 networks.

The first three bits of the network prefix are set to 110, hence there are 221 (2097152) possible Class C networks; currently around 800000 are defined (40%).


Last
Updated
192.0.0.0 - 192.255.255.0 Various Networks Aug 1999
193.0.0.0 - 193.255.255.0 European Networks Feb 2001
194.0.0.0 - 194.255.255.0 European Networks Feb 2001
195.0.0.0 - 195.255.255.0 European Networks Feb 2001
196.0.0.0 - 196.255.255.0 South Africa/Caribbean Networks Aug 1999
197.0.0.0 - 197.255.255.0 IANA (NETBLK-RESERVED-13) -
198.0.0.0 - 198.255.255.0 American Registry for Internet Numbers (NETBLK-ARIN-198) Aug 1999
199.0.0.0 - 199.255.255.0 US/Canadian Networks Aug 1999
200.0.0.0 - 200.255.255.0 South/Central American Networks Aug 1999
201.0.0.0 - 201.255.255.0 IANA (NETBLK-RESERVED-14) - reserved for South/Central American Networks -
202.0.0.0 - 202.255.255.0 Asia Pacific Network Information Center (APNIC2) Feb 2001
203.0.0.0 - 203.255.255.0 Asia Pacific Network Information Center (APNIC2) Feb 2001
204.0.0.0 - 204.255.255.0 US/Canadian Networks Aug 1999
205.0.0.0 - 205.255.255.0 US/Canadian Networks Aug 1999
206.0.0.0 - 206.255.255.0 US/Canadian Networks Aug 1999
207.0.0.0 - 207.255.255.0 US/Canadian Networks Aug 1999
208.0.0.0 - 208.255.255.0 US/Canadian Networks Aug 1999
209.0.0.0 - 209.255.255.0 US/Canadian Networks May 2000
210.0.0.0 - 210.255.255.0 Asia Pacific Network Information Center (NETBLK-APNIC-CIDR-BLK) Feb 2001
211.0.0.0 - 211.255.255.0 Asia Pacific Network Information Center (NETBLK-APNIC-CIDR-BLK) Feb 2001
212.0.0.0 - 212.255.255.0 European Regional Internet Registry - RIPE NCC (NET-RIPE-NCC-212) Feb 2001
213.0.0.0 - 213.255.255.0 European Regional Internet Registry - RIPE NCC (NETBLK-213-RIPE) Feb 2001
214.0.0.0 - 214.255.255.0 DoD Network Information Center, VA (NETBLK-DDN-NIC15) -
215.0.0.0 - 215.255.255.0 DoD Network Information Center, VA (NETBLK-DDN-NIC16) -
216.0.0.0 - 216.255.255.0 US/Canadian Networks May 2000
217.0.0.0 - 217.255.255.0 European Regional Internet Registry - RIPE NCC (NETBLK-217-RIPE) Feb 2001
218.0.0.0 - 218.255.255.0 Asia Pacific Network Information Center (NET-APNIC4) -
219.0.0.0 - 222.255.255.0 Not yet allocated -
223.0.0.0 - 223.255.255.0 IANA (RESERVED-5) RESERVED
224.0.0.0 - 239.255.255.0 University of Southern California (NET-MCAST-NET) -
240.0.0.0 - 255.255.255.0 Not yet allocated -


Maintained by John Crossley - E-Mail:
jgc@americansouthwest.net