go
ns2a.ofheo.gov has one IP number , which also has a corresponding reverse pointer. fhfb.gov, fhfa.gov and ofheo.gov use this as a nameserver. ofheo.gov is a domain controlled by three nameservers at ofheo.gov themselves. Two of them are on the same IP network. Incoming mail for ofheo.gov is handled by two mailservers at fhfa.gov. They are on the same IP network. ns2a.ofheo.gov is hosted on a server in United States.

ns2a.ofheo.gov
a records
 
+ 198.87.1.228 198.87.0.0/16 AS2914 -
+ --- -

ofheo.gov
ns-soa records
ns1a.ofheo.gov
+ 141.156.72.195 141.156.0.0/16 AS19262 ns1a.fhfa.gov
+ --- ns1a.fhfa.gov
ns records
ns2a.ofheo.gov
+ 198.87.1.228 198.87.0.0/16 AS2914 -
+ --- -
ns1a.ofheo.gov
+ 141.156.72.195 141.156.0.0/16 AS19262 ns1a.fhfa.gov
+ --- ns1a.fhfa.gov
ns3a.ofheo.gov
+ 141.156.72.196 141.156.0.0/16 AS19262 ns3a.fhfa.gov
+ --- ns3a.fhfa.gov
mx records
ep2.fhfa.gov
+ 141.156.72.206 141.156.0.0/16 AS19262 -
+ --- -
ep1.fhfa.gov
+ 141.156.72.205 141.156.0.0/16 AS19262 -
ip numbers of host
198.87.1.228
ptrs of ip numbers
ns2a.ofheo.gov
ip numbers using ptr to this host
198.87.1.228
domains using this as nameserver
fhfa.gov
fhfb.gov
ofheo.gov