In addition to blocking the IP address (64.94.110.11), why not block the entire
versign.com domain as well?
i.e. add versign.com to your DNS zone with no records other than SOA.
Seems like a perfectly appropriate response to me.
I do not see any technical problems in doing so. (com/net zones are at
gtld-servers.net, and whois is at internic.net, I don't see anything critical at
versign.com).
Just claim the site violates your company's policies (you have no contractual
obligation
to provide service to any given domain name, many places block pornography
domains and spammers in a similar manner).
Adam
