Service Record

What Does Service Record Mean?

A service record (SRV record) is a specification of servers in the Domain Name System by hostname and port number. With an SRV record, it is possible to make a server discoverable and designate high priority and high availability servers using a single domain without having to know the exact address of the servers.


Techopedia Explains Service Record

A service record is a specification of the Domain Name System that allows services to be discoverable on a network. The format is specified in RFC 2782.

SRV records are entered into the DNS server’s zone configuration file. They consist of the symbolic service name, protocol name, domain name, time to live, class, priority, relative weight compared to other records, the port and the hostname of the machine providing the service.

SRV records are used to make services available on a network, such as SIP for VoIP telephony, without having to know the exact address of a server. With the weight and priority features, administrators can use multiple servers for one domain, with other servers becoming available should the main server fail.


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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.