An SRV record is a DNS record, that is used to redirect a domain 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, etc. When an SRV record is created, you are able to specify an Internet Protocol the domain name will use and the port, that will be used to connect to the remote server. Moreover, provided that you have numerous SRV records for the very same service, you could set individual priorities and weights for each one of them, allowing you to distribute the load between a number of machines. Such a record will allow you to employ the same domain or subdomains under it with different companies, so you could use it for various purposes even if you cannot get all the services from just one service provider.