Problems resolving exetools.com?

Ping request could not find host www.exetools.com. Please check the name and try again.

I can't visit the website, forums anything, I just assumed it was all down for several days. I went and asked a friend to resolve the site, and voila, I can visit it via the ip address.

is this a security settings issue?
or is it my ISP blocking this?

Thanks