Key Exchanger
Quick facts
Purpose
Key Exchanger
KX is one of the DNS resource record (RR) types defined by RFC 2230.
Example
example.com. 3600 IN KX 10 kx.example.com.
Related record types
Frequently asked questions
Used for DNS resolution and zone configuration.
In the DNS management panel of your registrar or DNS provider (for example Cloudflare or Route53).
Sources & standards
Updated 2026-08-18
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