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RFC 9953 - DNS over CoAP (DoC)

  • Status: Proposed Standard
  • Published: March 2026
  • Stream: IETF
  • Errata: Errata

Abstract​

This document defines a protocol for exchanging DNS queries (OPCODE 0) over the Constrained Application Protocol (CoAP). These CoAP messages can be protected by (D)TLS-Secured CoAP or Object Security for Constrained RESTful Environments (OSCORE) to provide encrypted DNS message exchange for constrained devices in the Internet of Things (IoT).

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