There is a private forum site that I have accessed without issue for a long time. As of about 2 weeks ago, without warning, I suddenly cannot access the site through any browser.
My first assumption was that the site was simply taken down. Out of curiosity, a few days ago I accessed a proxy avoidance server and typed in the site's address. It loaded the page without error.
So my second assumption was that the forum administrator was blocking me. Using the proxy, I was able to log in using my name and password, no problem, which halfway disproved this second theory as I would imagine they would have deleted my account in that case.
I posted on a help board within the forum, asking if I had been punished or banned from the boards. I received a response from the administrator that no such thing had happened and he couldn't explain what was going on.
Now my last guess is that it is ISP-related. I am with Comcast (not by choice), and have been for 2 years. Over the last 2 years I've accessed the site without any problems. Suddenly it is blocked.
I thought about changing some settings in the wireless router or cable modem through which I connect, but I wouldn't know what to change or how. Would this even help?
What/Who else would be able to block my access to a particular website?