You can switch services to Metro and keep your number to take advantage of these savings. To do so, you'll port your number over, which needs some information, but it should be simple and ...

Internet services are identified by a standard port number; for example, Web traffic uses port number 80. If the local network hosts a Web server that is accessible on the public Internet ...

A number from 0 through 1023 used to identify a network service on a private IP network or the public Internet. Residing in a field in the TCP or UDP header, the port number directs packets to the ...