Experiencing connectivity issues with services like VoIP, messaging systems, or directory services? Our DNS SRV record checker helps you identify misconfigurations and verify service endpoints in real-time. Simply enter your domain or full service record name to retrieve complete SRV data including priority settings, weight distributions, port numbers, and target hostnames.
Whether you're migrating services, implementing load balancing, or troubleshooting DNS propagation delays, this tool provides the insights you need to maintain reliable service connectivity.
Service records (SRV) act as DNS signposts that direct client applications to the correct server and port for specific services. Unlike standard A records that simply point to IP addresses, SRV records contain sophisticated routing information including:
This intelligent routing system enables robust service discovery for protocols like SIP telephony, XMPP messaging, and LDAP directory services.
Regular SRV record validation becomes crucial in several operational scenarios:
Each SRV record contains four critical data fields that determine service routing behaviour:
Understanding these components helps you diagnose service routing issues and optimise performance across distributed infrastructures.
Which service name format should I query?
SRV records follow the specific naming convention _service._protocol.domain.com (such as _sip._tcp.example.org). Querying just the base domain won't reveal configured service records.
Why might my SRV record exist but services still fail?
Several factors can cause this: incorrect service/protocol naming, target servers lacking proper A/AAAA records, wrong port configurations, or client applications that don't support SRV lookups for your specific service type.
How do priority and weight values work together?
Clients attempt connections to the lowest priority targets first. When multiple records share the same priority level, weight values determine traffic distribution ratios amongst those servers.
Can SRV targets point to CNAME records?
The SRV specification requires targets to resolve directly via A or AAAA records rather than through CNAME aliases, though some implementations may handle this differently.
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