go
ss1.nfsi.pt has one IP number , which also has a corresponding reverse pointer. mailcleaner.nfsi.pt cnames to this hostname. kidtokid.pt, avrentcar.com, discoverycars.com and algarvecarhireonline.co.uk use this as a mailserver. nfsi.pt is a domain controlled by two nameservers at ns.nfsi.pt. They are on the same IP network. Incoming mail for nfsi.pt is handled by one mailserver at nfsi.pt themselves. nfsi.pt has one IP number. ss1.nfsi.pt is hosted on a server in Portugal.

ss1.nfsi.pt
a records
 
+ 81.92.193.227 81.92.192.0/19 AS25137 -
+ --- -

nfsi.pt
a records
 
+ 81.92.200.2 81.92.192.0/19 AS25137  
+ ---  
ns-soa records
a.ns.nfsi.pt
+ 194.88.142.1 194.88.142.0/23 AS25137 -
+ --- -
ns records
a.ns.nfsi.pt
+ 194.88.142.1 194.88.142.0/23 AS25137 -
+ --- -
b.ns.nfsi.pt
+ 194.88.143.1 194.88.142.0/23 AS25137 -
mx records
secure-mx.nfsi.pt
+ 81.92.192.194 81.92.192.0/19 AS25137 -
+ --- -
ip numbers of host
81.92.193.227
ptrs of ip numbers
ss1.nfsi.pt
ip numbers using ptr to this host
81.92.193.227
hostnames pointing here by cname
mailcleaner.nfsi.pt
domains using this as mailserver
algarvecarhireonline.co.uk
avrentcar.com
discoverycars.com
kidtokid.pt