tdns2.orange.sk has one IP number , which also has a corresponding reverse pointer. hasta.sk, orange.sk, oskole.sk, diverso.sk, hk-impex.sk and at least 65 other hosts use this as a nameserver. orange.sk is a domain controlled by four nameservers at orange.sk themselves. All of them are on the same IP network. Incoming mail for orange.sk is handled by two mailservers also at orange.sk. They are on the same IP network. orange.sk has one IP number. tdns2.orange.sk is hosted on a server in Slovakia.