Tsinghua University This document specifies DNS-Native Agent Naming and Resolution (DN- ANR) for AI agents. DN-ANR uses domain names (FQDNs) as stable Agent Identifiers and resolves a selected Agent Identifier to verifiable endpoints and supported protocol/version information with a cryptographic integrity chain, with DNSSEC preferred. DN-ANR is a post-selection resolution profile. It does not define agent discovery, capability search, semantic matching, ranking, or routing decisions. Agent discovery, publication, or registry, including DNS-based mechanisms such as DNS-AID, may produce candidate Agent Identifiers; DN-ANR resolves and verifies the identifier selected by such mechanisms or by local policy. Within that scope, DN-ANR additionally defines DNS-based version distribution and deterministic version selection, canonicalized SVCB integrity cross- checking, and a signed HTTPS mirror for clients that cannot perform SVCB queries. While AI agents are the primary use case, the resolution and verification behavior defined here applies to any entity identified by an FQDN, such as services and workloads.