An SRV record is a DNS record, that is used to forward a domain name to a third-party server and use it for some service different from a web site. This may be a Voice-Over-IP server, a video streaming service, an instant messaging system, and many others. When an SRV record is set up, you could specify an Internet Protocol which the domain will use and the port, that will be employed to connect to the remote server. Moreover, in case you have numerous SRV records for the same service, you could set various priorities and weights for every one of them, so you're able to send out the load between several machines. Such a record allows you to use the same domain name or subdomains under it with different providers, so you're able to use it for many purposes even if you cannot get all services from just one service provider.