General-purpose service binding
Quick facts
Purpose
General-purpose service binding
SVCB is one of the DNS resource record (RR) types defined by RFC 9460.
Example
_foo.example.com. 3600 IN SVCB 1 svc.example.com. alpn=h2 port=8443
Related record types
Common uses
Common services
Frequently asked questions
General-purpose service binding, Parameterized endpoint discovery
In the DNS management panel of your registrar or DNS provider (for example Cloudflare or Route53).
Sources & standards
Updated 2026-09-13
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