strange type of domain... any info on these?

I dont remember how, but I found this: http://977398531/ kind of url... how is this possible? any info would be appreciated tnx.

P.S. please view it with some Antivirus, as I have strange feeling about it...

 

Check out this page:

http://member.dnsstuff.com/pages/tools.php

Look for URL DEOBFUSCATOR and type it in. Spammers normally use this method to try to hide the domain name or IP address.

 

Tnx snowbird

here is the methods explained: http://www.pc-help.org/obscure.htm