Summary
ns1.shahramco.com has one IP number , but the reverse is
ip-174-142-91-140.static.privatedns.com.
mmr.ir,
mee.ir,
dts.ir,
omid.in,
astro.ir and at least 78 other hosts point to the same IP.
gssco.net,
gtagency.com,
aletesal.com,
shahramco.com,
ariacenter.com and at least one other host use this as a nameserver.
shahramco.com is delegated to two nameservers, however both delegated nameservers are missing in the zone. All nameservers are at
shahramco.com themselves. They are on different IP networks.
ns1.shahramco.com is hosted on a server in Canada.