IP Checking gives the domain IP as 173.10.169.197 I get the same IP at two other domain/IP checking sites.

But reverse that and check on the 173.10.169.197 IP address and you get a different domain name, comcastbusiness.net, but then do a whois on that domain and you get a host IP of 165.160.13.20. So these reverse IP checks don’t seem to be too consistent.