SRV records tell clients where a service runs. They live at _service._protocol.domain and each one gives a target hostname and port, a priority that is tried lowest first, and a weight that shares load between equal priorities. This lookup lists every SRV record on the name you enter.
See it in Action
You can add or modify SRV records through your domain’s DNS management interface, usually provided by your domain registrar or DNS hosting provider.
SRV records must specify a port; if it’s missing, the client may not be able to connect correctly.
Yes, SRV records can be used with both IPv4 and IPv6 addresses, depending on the target server configuration.
DNS caching can delay updates to SRV records, as cached data may not immediately reflect recent changes.
SRV records specify service-related information, including port and priority, while A records map domain names to IP addresses.
Yes, SRV records can facilitate load balancing by distributing traffic among multiple servers based on weight values.
If multiple SRV records have the same priority, clients will use the weight values to decide which server to connect to.
No, SRV records are specific to services that require them, like SIP or LDAP. Not all services use SRV records.
Yes, many SRV record lookup tools allow you to query records from specific DNS servers for more targeted results.
Regularly test and verify SRV records using lookup tools and check that they match the intended service configuration and documentation.
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