Custom TURN domains

Cloudflare Calls TURN service supports using custom domains for UDP, and TCP - but not TLS protocols. Custom domains do not affect any of the performance of Cloudflare Calls TURN and is set up via a simple CNAME DNS record on your domain.

Protocol	Custom domains	Primary port	Alternate port
STUN over UDP	✅	3478/udp	53/udp
TURN over UDP	✅	3478/udp	53 udp
TURN over TCP	✅	3478/tcp	80/tcp
TURN over TLS	No	5349/tcp	443/tcp

Setting up a CNAME record

To use custom domains for TURN, you must create a CNAME DNS record pointing to turn.cloudflare.com.

Caution

Do not resolve the address of turn.cloudflare.com or stun.cloudflare.com or use an IP address as the value you input to your DNS record. Only CNAME records are supported.

Any DNS provider, including Cloudflare DNS can be used to set up a CNAME for custom domains.

If Cloudflare’s authoritative DNS service is used, the record must be set to DNS-only or “grey cloud” mode.`

There is no additional charge to using a custom hostname with Cloudflare Calls TURN.