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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.

Related Protocols — Application Layer

HTTP Hypertext Transfer Protocol HTTPS HTTP Secure HTTP/2 HTTP/2 WS WebSocket SMTP Simple Mail Transfer Protocol IMAP Internet Message Access Protocol POP3 Post Office Protocol v3 FTP File Transfer Protocol