ns1.garr.net has one IP number , which also has a corresponding reverse pointer. server2.garr.net point to the same IP. ior.it, asi.it, dds.it, csp.it, ien.it and at least 100 other hosts use this as a nameserver. garr.net is a domain controlled by two nameservers at garr.net themselves. They are on the same IP network. Incoming mail for garr.net is handled by two mailservers at dir.garr.it. Two mailservers have the same IP number. ns1.garr.net is hosted on a server in Italy.