There are two types of ip address we are using
1)Static ip address
2)Dyamic ip address
If you have dynamic IP, then change your IP address by following the steps:-
1)Go to Start->Run->Cmd->Press Enter..
Type in "ipconfig/release" for Current IP address and then type "ipconfig/renew" for New IP address.
2)Either follow step 1 or Simply restart or unplug your modem/router .
Doing either step 1 or 2 will change your Dynamic IP address. Visit Ip-details.com to check your IP address is changed or not.
If you have a static ip you can contact your service provider then request a ip change