| IP Subnet Chart | Home |
Certifications
Cisco
Downloads
IP
PC
Protocols
RemoteAccess
Security
Telecommunications
Tools
Unix
Web
IP Subnet Chart
| Class C Address Space | |||
|---|---|---|---|
| Prefix | Subnet | Host | Usable |
| /32 | 255.255.255.255 | 1 | 1 |
| /31 | 255.255.255.254 | 2 | 0 |
| /30 | 255.255.255.252 | 4 | 2 |
| /29 | 255.255.255.248 | 8 | 6 |
| /28 | 255.255.255.240 | 16 | 14 |
| /27 | 255.255.255.224 | 32 | 30 |
| /26 | 255.255.255.192 | 64 | 62 |
| /25 | 255.255.255.128 | 128 | 126 |
| /24 | 255.255.255.0 | 256 | 254 |
| Class B Space is denoted in numbers of Class C's | ||
|---|---|---|
| Ripe | Subnet | # of Class C's |
| /23 | 255.255.254.0 | 2 |
| /22 | 255.255.252.0 | 4 |
| /21 | 255.255.248.0 | 8 |
| /20 | 255.255.240.0 | 16 |
| /19 | 255.255.224.0 | 32 |
| /18 | 255.255.192.0 | 64 |
| /17 | 255.255.128.0 | 128 |
| /16 | 255.255.0.0 | 256 |
Private IP Addresses
RFC 1918 requests that organizations make use of the private Internet address space for hosts that require IP connectivity within their enterprise network, but do not require external connections to the global Internet. For this purpose, the IANA has reserved the following three address blocks for private internets:
- 10.0.0.0/8
- 127.0.0.0/8
- 172.16.0.0/12
- 192.168.0.0/16
IP's above 224.0.0.0 are used for both multicast and experimental purposes.
This page was created in 0.07023 seconds
Comments and Questions
Last modified: October 26 2003.
Last modified: October 26 2003.