ns2.webzone.ee has one IP number , which also has a corresponding reverse pointer. ns2.swsdns.com point to the same IP. webzone.ee use this as a nameserver. webzone.ee is a domain controlled by two nameservers at webzone.ee themselves. They are on different IP networks. Incoming mail for webzone.ee is handled by one mailserver also at webzone.ee. webzone.ee has one IP number , but the reverse is ns1.webzone.ee. ns2.webzone.ee is hosted on a server in Ukraine even though the hostname implies Estonia.