How does one find out the domain he bans from?

From a long time ago when I have the premium account, I was asking questions about the politics when that happened.<br><br>"You have been banned from the website, please try to renew or restart the website."<br><br>(The ban was used to be 24 hours, but now it seems to be a permanent)<br><br>It's not an IP ban because I can still access it. So, I suspect it's the domain ban. <br><br>Anyone who has had this issue before please tell me how to find out the domain he bans from?