IP Address Classes
Importent Note:
- Class A addresses 127.0.0.0 to 127.255.255.255 cannot be used and is reserved for loopback and diagnostic functions.
- a.b.c.1 to a.b.c.10 – usually routers and servers
- a.b.c.11 to a.b.c.204 – usually workstations
- a.b.c.241 to a.b.c.254 – usually UNIX (or Linux) hosts
- 10.0.0.0 to 10.255.255.255 – usually Internal networks
- 172.16.0.0 to 172.31.255.255 – usually Intranets not connected to the Internet
- 192.168.0.0 to 192.168.255.255 – usually networks connected to the Internet(and usually behind a firewall)
IP Subnet Table
