DNS Tools

SRV Record Lookup

Find the SRV records that tell apps which host and port run a service for a domain.

Not sure what to enter? Try an example: _xmpp-server._tcp.jabber.org

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Found

_xmpp-server._tcp.jabber.org

30 30 5269 scarlet.jabber.org

Last checked: 0 seconds ago Live

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Result Summary

Failed

Domain does not resolve

How to Fix

Verify the domain is spelled correctly and its DNS records are configured.

Enter a service name such as _sip._tcp.example.com to see the target host, port, priority and weight of its SRV records.

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What is an SRV record?

An SRV (service) record tells clients which host and port provide a particular service for a domain - for example SIP calling, XMPP chat, Microsoft 365 or game servers. SRV names start with the service and protocol, such as _sip._tcp.example.com.

How to look up SRV records

Enter the full service name, for example _sip._tcp.example.com, in the box above.
Click Look Up SRV.
Read the priority, weight, port and target host of each record.
Confirm the target host resolves and the port matches what the service provider documented.

Related checks

To check the target host's address, use the A Record Lookup.
To see the domain's other records, use the DNS Lookup.

SRV records are easy to break during a DNS migration because many providers hide them in an advanced menu. Keep the values above handy, and let JustChecker flag any DNS record that changes after the move.

Frequently Asked Questions

As _service._protocol.domain, for example _sip._tls.example.com or _minecraft._tcp.example.com. The service and protocol each start with an underscore.

Microsoft 365 / Teams setups, VoIP phones (SIP), XMPP chat, some email autodiscovery and game servers. Your provider tells you exactly which SRV records to create.

Clients try the lowest priority first. Among records with the same priority, weight decides how traffic is shared - a weight of 60 gets more connections than one of 40.

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