trying seeing which proxy you are going through using
www.all-nettools.com and running the proxy test.
Post back the results- exculding your own ip. If there is a proxy server, it is likely that the tests that you have done are testing the proxy rather than your ip.
If you pm me your ip address i can run a port scan (with your express permission) to see which ports on your pc/ router are open/ listening/ closed/ stealthed.
MB