Inspect advertised DNS SRV services

For network administrators configuring service discovery, this check reveals the published targets when routing does not behave as expected.

Discover which services a domain advertises, including priorities, ports and targets, so you can verify its SRV routing without guesswork.

How to use

Enter the service name you want to check, following the usual service and protocol prefix plus the domain.
Start the test to ask the DNS for the matching SRV records.
Read each entry returned: priority, weight, port and target for the service.
Check that the advertised target matches the host you configured for that service.
Run the same lookup for another service, such as mail or telephony, when you need to.

Example

A video conferencing app can no longer reach a client's service. Looking up the record for that service shows which port and target are advertised, so you can compare them with the configuration expected on the server side.

Limits and formats

The check never contacts the advertised service; it only confirms what the DNS publishes, not that the port is open.
A service typed with the wrong prefix returns an empty answer even though a record may exist under another label.
Priority and weight guide the choice made by clients, so reading them does not prove how traffic is really spread.

Where processing happens

The YOORfree server receives the requested service, queries the public DNS itself for the matching SRV records and returns the answer to you. No file is transferred along with the request.

Frequently asked questions

How should I write the service name?

Use the usual SRV shape: an underscore, the service, the protocol and then the domain, exactly as the administrator published it. If you are unsure, ask whoever manages the zone for the exact value.

Why does the result mention a port?

An SRV record states the port on which the service listens, in addition to the target host. That detail lets a client reach the right service without manual configuration.

What if the target is a host name I do not know?

First check whether it is an alias used by your hosting provider. If it matches none of your machines, it may be an old record still sitting in the zone, which your provider can confirm.