IP, Internet Protocol, is a networking protocol. Its purpose is to deliver network packets from one host to another based on the recipient’s IP address.

The Original IPv4 RFC

This RFC describes Version 4 of the Internet Protocol, which has since become known as “IPv4”.


IP Services

Explicit Congestion Notification

Additional IPv6 RFCs

Obsolete IPv6 RFCs

Protocol Numbers and Values

The list of assigned Internet Protocol numbers is also maintained by IANA. This includes ICMP, TCP, STCP, and other protocols on the layer underneath IP.