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IPFYI
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DNS

Domain Name System

Application Layer — DNS

Protocol Overview

Full Name Domain Name System
Abbreviation DNS
OSI Layer Application Layer
Category DNS
Default Port 53
RFC RFC 1035

About DNS

Hierarchical distributed naming system translating human-readable domain names to IP addresses. The internet's phone book.

Application Layer DNS Port 53

Standards Reference

DNS is defined in RFC 1035, 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 HTTP/3 HTTP/3 WS WebSocket SMTP Simple Mail Transfer Protocol IMAP Internet Message Access Protocol POP3 Post Office Protocol v3
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