DNS delegation of idearc.com updated: May 25, 2013 2:11:58 PM
We pick d.root-servers.net, one of the 13 root servers (1), and ask it about idearc.com and learn that com is delegated to 13 name servers (2), so we ask f.gtld-servers.net where we learn that idearc.com is delegated to three name servers, including ns.superpages.com (3), so we ask that one and get the following answer:
Idearc.com is a domain controlled by three domain name servers at superpages.com having a total of four IP numbers. Two domain name servers have the same IP number. Two of them are on the same IP network. Incoming mail for idearc.com is handled by two mail servers at idearc.com themselves. Both are on the same IP network. Idearc.com has one IP number (188.8.131.52), which also has a corresponding reverse pointer.