go
pigeon.verisign.com has one IP number , which also has a corresponding reverse pointer. r4gs.com, nstld.com, nstld.net and verisign.co.nz use this as a mailserver. verisign.com is a domain controlled by eleven nameservers. All of them are on different IP networks. Incoming mail for verisign.com is handled by four mailservers. All of them are on the same IP network. verisign.com has one IP number. pigeon.verisign.com is hosted on a server in United States.

pigeon.verisign.com
a records
 
+ 65.205.251.71 65.205.251.0/24 AS7342 -
+ --- -

verisign.com
a records
 
+ 65.205.249.60 65.205.249.0/24 AS7342  
+ ---  
ns-soa records
 
+   AS?  
+ ---  
ns records
c2.nstld.net
+ 192.26.92.31 192.26.92.0/24 AS36625 c2.nstld.com
+ --- c2.nstld.com
d2.nstld.net
+ 192.31.80.31 192.31.80.0/24 AS36617  
+ ---  
e2.nstld.net
+ 192.12.94.31 192.12.94.0/24 AS36629  
h2.nstld.net
+ 192.54.112.31 192.54.112.0/24 AS36623 h2.nstld.com
+ --- h2.nstld.com
j2.nstld.net
+ 192.48.79.31 192.48.79.0/24 AS36626 j2.nstld.com
+ --- j2.nstld.com
k2.nstld.net
+ 192.52.178.31 192.52.178.0/24 AS36622 k2.nstld.com
+ --- k2.nstld.com
m2.nstld.net
+ 192.55.83.31 192.55.83.0/24 AS36618 m2.nstld.com
+ --- m2.nstld.com
a2.nstld.com
+ 192.5.6.31 192.5.6.0/24 AS36625 -
+ --- -
f2.nstld.com
+ 192.35.51.31 192.35.51.0/24 AS36620  
+ ---  
g2.nstld.com
+ 192.42.93.31 192.42.93.0/24 AS36624 -
+ --- -
l2.nstld.com
+ 192.41.162.31 192.41.162.0/24 AS36628 -
mx records
verisign.com.s6a1.psmtp.com
+ 64.18.5.10 64.18.5.0/24 AS26910 s6a1.psmtp.com
+ --- s6a1.psmtp.com
verisign.com.s6a2.psmtp.com
+ 64.18.5.11 64.18.5.0/24 AS26910 s6a2.psmtp.com
+ --- s6a2.psmtp.com
verisign.com.s6b1.psmtp.com
+ 64.18.5.13 64.18.5.0/24 AS26910 s6b1.psmtp.com
+ --- s6b1.psmtp.com
verisign.com.s6b2.psmtp.com
+ 64.18.5.14 64.18.5.0/24 AS26910 s6b2.psmtp.com
+ --- s6b2.psmtp.com
ip numbers of host
65.205.251.71
ptrs of ip numbers
pigeon.verisign.com
ip numbers using ptr to this host
65.205.251.71
domains using this as mailserver
nstld.com
nstld.net
r4gs.com
verisign.co.nz