ns1.x1.fr has one IP number , but the reverse is ns1.tgv.net. ns1.tgv.net point to the same IP. repairemedia.net use this as a nameserver. x1.fr is a domain controlled by two nameservers at tgv.net. They are on different IP networks. Incoming mail for x1.fr is handled by one mailserver at x1.fr themselves. x1.fr has one IP number , but the reverse is ns0.tgv.net. ns1.x1.fr is hosted on a server in France.