ns1.newtel.net.br has one IP number , but the reverse is ns1.tahoe.everydns.net. i521.info, tingvn.com, cvclan.org, ns2.230.ro, ns.ljsf.org and at least 59 other hosts point to the same IP. newtel.net.br and newtel.com.br use this as a nameserver. newtel.net.br is delegated to four nameservers, however all four delegated nameservers are missing in the zone and four other nameservers are listed instead. There are two duplicated IP numbers. Some of them are on the same IP network. ns1.newtel.net.br is hosted on a server in United States even though the hostname implies Brazil.