Network protocol and communication related information is here.

TCP

Reserved IP Addresses

• 10.0.0.0/8 or 10.*.*.*, private network.
• 127.0.0.0/8 or 127.*.*.*, local host IPs.
• 172.16.0.0/12 or 172.16.*.* to 172.31.*.*, private network
• 192.168.0.0/16 or 192.168.*.*, private network.

References

• IANA IPv4 Special-Purpose Address Registry