ns1.gortex.se has one IP number , but the reverse is ns1.gns.se. ns1.gns.se and srv1-bazaar.ma point to the same IP. nrf.se, jbu.se, ngen.se, ripe.se, msol.se and at least 100 other hosts use this as a nameserver. gortex.se is delegated to two nameservers, however two extra nameservers are listed in the zone. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for gortex.se is handled by one mailserver at gns.se. gortex.se has three IP numbers. All of them are on the same IP network. ns1.gortex.se is hosted on a server in Sweden.