bill.aol.com has one IP number , via cname to rh.bill.aol.com. rh.bill.aol.com and grh.bill.aol.com are subdomains to this hostname. aol.com is a domain controlled by four nameservers at ns.aol.com. All of them are on different IP networks. Incoming mail for aol.com is handled by four mailservers having a total of 15 IP numbers. Some of them are on the same IP network. aol.com has four IP numbers. Two of them are on the same IP network. bill.aol.com is hosted on a server in United States.