Internet Protocol version 4 (IPv4) is the fowert version o the Internet Protocol (IP). It is ane o the core protocols o standards-based internetworkin methods in the Internet, an wis the first version deployed for production in the ARPANET in 1983. It still routes maist Internet traffic the day, despite the onganin deployment o a successor protocol, IPv6. IPv4 is descrived in IETF publication RFC 791 (September 1981), replacin an earlier defineetion (RFC 760, Januar 1980).
- "BGP Analysis Reports". Retrieved 2013-01-09.