mm.bing.net has one IP number , which is the same as for bing.net, but no corresponding reverse pointer. bing.net, bing.com, kumo.net, kumo.com, bingj.com and at least eleven other hosts point to the same IP. ts1.mm.bing.net are subdomains to this hostname. bing.net is a domain controlled by five nameservers at msft.net. All of them are on different IP networks. mm.bing.net is hosted on a server in United States.