Summary
amm.aol.com is a domain controlled by two nameservers at
ns.aol.com. They are on different IP networks.
rr.net,
aol.nl,
aol.fr,
aim.com,
aol.com and at least 57 other hosts share nameservers with this domain.
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.