We pick c.root-servers.net, one of the 13 root servers (1), and ask it about mail.fr and learn that fr is delegated to five name servers (2), so we ask d.ext.nic.fr where we learn that mail.fr is delegated to two name servers, including ns0.aquaray.com (3), so we ask that one and get the following answer:
The two name servers ns0 and ns1.aquaray.com together
There are several hundred of domains that use name server group 1.
Three quarter of those use mail server group 1 (example: rueil-modelisme.com, lemasperdu.com and safenet.fr ). Worth noting is that most of the domains that use mail server group 1 use name server group 1.
There are several hundred of host names that point only to the IP number 95.128.42.135.
Three quarter of those use name server group 1 (example: quincampoix.com, proquartet.fr and minkowska.com ). Worth noting is that a third of the domains that use name server group 1 point only to the IP number 95.128.42.135.
Three quarter of them use mail server group 1 (example: patfuchs.com, aetrad.com and unse.org ). Worth noting is that a third of the domains that use mail server group 1 point only to the IP number 95.128.42.135.
