SRV Lookup
Resolve SRV records for a service name like _sip._tcp.example.com.
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Enter a host above and press Run to start the check.
About the SRV Lookup
SRV Lookup resolves service (SRV) records, which advertise the hostname and port for a specific service under a name like _sip._tcp.example.com. Each record carries a priority, weight, port, and target, letting clients discover where a service runs and how to balance across multiple endpoints. SRV records are commonly used by SIP, XMPP, LDAP, Minecraft, and Microsoft services for automatic service discovery.
How to use
- Enter the full SRV name, including the service and protocol labels, such as _sip._tcp.example.com.
- Run the lookup to retrieve the matching SRV records.
- Read the priority, weight, port, and target fields to identify the service endpoints.
Frequently asked questions
- How is an SRV record name formatted?
- It follows the pattern _service._protocol.domain, for example _sip._tcp.example.com. The leading underscores are part of the standard.
- What do priority and weight mean?
- Clients try lower-priority values first, and among records with equal priority, weight distributes load proportionally. Higher weight receives more traffic.
- What do the port and target fields specify?
- Target is the hostname running the service, and port is the TCP or UDP port it listens on. Clients connect to that host and port.