go
mx2.w1p.fr has one IP number , which also has a corresponding reverse pointer. w1p.fr, monq.org and dailysexe.net use this as a mailserver. w1p.fr is a domain controlled by two nameservers at w1p.fr themselves. They are on different IP networks. Incoming mail for w1p.fr is handled by two mailservers also at w1p.fr. They are on the same IP network. w1p.fr has one IP number , but the reverse is mx.w1p.fr. mx2.w1p.fr is hosted on a server in France.

mx2.w1p.fr
a records
 
+ 88.191.88.19 88.160.0.0/11 AS12322 -
+ --- -

w1p.fr
a records
 
+ 88.191.88.189 88.160.0.0/11 AS12322 mx.w1p.fr
+ --- mx.w1p.fr
ns-soa records
ns1.w1p.fr
+   AS?  
+ ---  
ns records
ns1.w1p.fr
+   AS?  
+ ---  
ns2.w1p.fr
+ 88.191.90.189 88.160.0.0/11 AS12322 mx2.w1p.fr
+ --- mx2.w1p.fr
mx records
mx.w1p.fr
+ 88.191.88.189 88.160.0.0/11 AS12322 -
+ --- -
mx2.w1p.fr
+ 88.191.88.19 88.160.0.0/11 AS12322 -
ip numbers of host
88.191.88.19
ptrs of ip numbers
mx2.w1p.fr
ip numbers using ptr to this host
88.191.88.19
88.191.90.189
domains using this as mailserver
dailysexe.net
monq.org
w1p.fr