Safe web scanner IP address

I run an web site at home.  It used to be rated "safe" by Norton Safe Web in the past. Now I changed the URL and requested the eveluation once again, say some ten weeks ago.  However, the eveluation status is at "owner verified" and never proceed from there.

Now, I wonder if my firewall blocks Symantec scanner(crawler) by accident.
Could someboby tell me the IP range of the scanner?

Thanks in advance.  Tak