ns1.l3.net has one IP number , but the reverse is ns1.level3.net. ns1.lvlt.net and ns1.level3.net point to the same IP. l3.net, l3.com, lll.com, xcom.net, lvlt.net and at least 31 other hosts use this as a nameserver. l3.net is a domain controlled by two nameservers at l3.net themselves. They are on the same IP network. Incoming mail for l3.net is handled by two mailservers having a total of eight IP numbers. There are six duplicated IP numbers. Some of them are on the same IP network. l3.net has one IP number. ns1.l3.net is hosted on a server in United States.