HTTP/3
HTTP/3
Application Layer — Web
Protocol Overview
Full Name
HTTP/3
Abbreviation
HTTP/3
OSI Layer
Application Layer
Category
Web
Default Port
443
RFC
RFC 9114
About HTTP/3
Latest HTTP version running over QUIC (UDP) instead of TCP. Eliminates head-of-line blocking and reduces connection establishment latency.
Application Layer
Web
Port 443
Standards Reference
HTTP/3 is defined in RFC 9114, published by the Internet Engineering Task Force (IETF). RFCs are the official standards documents for internet protocols and are freely available for public review.