Use as a guide and for planning and recording your network.
Private Network Ranges
Class A:10.0.0.0
Class B:172.16.0.0 to 172.31.0.0
Class C:192.168.0.0 to 192.168.254.0
by R David Decker .. June 1998
| Network Address | Broadcast Address | Subnet Mask | Bits -Slash | Max IPs | Useable addresses | Description-Example |
| ___.___.___.0 | ___.___.___.255 | 255.255.255.0 | /24 | 256 | ___.___.___.1 - 254 | exampleFullC |
| ___.___.___.0 | ___.___.___.127 | 255.255.255.128 | /25 | 128 | ___.___.___.1-126 | HalfC |
| ___.___.___.0 | ___.___.___.63 | 255.255.255.192 | /26 | 64 | ___.___.___.1-62 | QuarterC |
| ___.___.___.0 | ___.___.___.31 | 255.255.255.224 | /27 | 32 | ___.___.___.1-30 | EighthC |
| ___.___.___.0 | ___.___.___.15 | 255.255.255.240 | /28 | 16 | ___.___.___.1-14 | SmallNet |
| ___.___.___.0 | ___.___.___.7 | 255.255.255.248 | /29 | 8 | ___.___.___.1-6 | FamlyISDN |
| ___.___.___.0 | ___.___.___.3 | 255.255.255.252 | /30 | 4 | ___.___.___.1-2 | ISDNrouter |
| ___.___.___.1 | ___.___.___.2 | 255.255.255.254 | /31 | 2 | ___.___.___.2 | StaticIP |
| ___.___.___.1 | ___.___.___.NA | 255.255.255.255 | /32 | 1 | ___.___.___.1 | Host-URL |
| Network Address | Broadcast Address | Subnet Mask | Bits -Slash | Max IPs | Useable addresses | Description |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.____ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |
| ___.___.___.___ | ___.___.___.___ | 255.255.255.___ | /__ | ___ | ___.___.___.___-___ | . |