ns.aol.com is a domain controlled by four nameservers at ns.aol.com themselves. All of them are on different IP networks. rr.net, aol.fr, aim.com, aol.com, aol.net and at least 41 other hosts share nameservers with this domain. l4-nat.ns.aol.com, dns-07.ns.aol.com, dns-04.ns.aol.com, dns-08.ns.aol.com, dns-02.ns.aol.com and at least 100 other hosts are subdomains to this hostname. aol.com is a domain controlled by four nameservers also 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 14 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.