An SRV record, which is short for Service record, is a DNS entry which is used to identify the servers which run a specific service for a domain. Quite simply, you can use your Internet domain not only for an Internet site, but also for an instant messaging server, a video streaming host or perhaps a Voice-Over-IP server, as an example, while you still have a site with it. If you create the SRV record, you can choose what IP it'll use, on which port the connection to the particular server is going to be established along with the priority and the weight of the record assuming that there are several SRV records for the exact same service. The latter option will permit you to use different machines for load balancing and redundancy. With this type of DNS records, you may use the same domain name for various purposes and even with different companies in case the same one can't provide all services that you need.