What is a DNS SRV Record?

The SRV record is used for special services like VOIP.

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DNS SRV Record

学習目的

この記事を読み終えると、以下のことができます。

  • Understand the purpose of an SRV record.

What is a DNS SRV record?

The ‘service’ record specifies a host and port for specific services such as Voice Over IP (VOIP), instant messaging, etc.

Example of an SRV record:

example.com record type: value: TTL
@_sip._tcp.example.com. SRV 8080 exampledomain.com 41200

In the above example, ‘_sip’ indicates the type of service, ‘_tcp’ indicates the protocol, and ‘8080’ indicates the port while ‘example.com’ is the host.