go
mail1.omanair.com has one IP number , but the reverse is i122.tb-as-17.omantel.net.om. i122.tb-as-17.omantel.net.om point to the same IP. omanair.com is a domain controlled by four nameservers at ecompany.ae. Some of them are on the same IP network. Incoming mail for omanair.com is handled by one mailserver having a total of two IP numbers. They are on different IP networks. omanair.com has one IP number. mail1.omanair.com is hosted on a server in Oman.

mail1.omanair.com
a records
 
+ 212.72.12.122 212.72.0.0/19 AS28885 i122.tb-as-17.omantel.net.om
+ --- i122.tb-as-17.omantel.net.om

omanair.com
a records
 
+ 195.229.241.194 195.229.241.0/24 AS5384  
+ ---  
ns-soa records
dxbans2.ecompany.ae
+ 194.170.1.7 194.170.0.0/18 AS5384 -
+ --- -
ns records
auhans1.ecompany.ae
+ 194.170.1.99 194.170.0.0/18 AS5384 -
+ --- -
auhans2.ecompany.ae
+ 195.229.237.52 195.229.237.0/24 AS5384  
+ ---  
dxbans1.ecompany.ae
+ 194.170.1.6 194.170.0.0/18 AS5384 -
+ --- -
dxbans2.ecompany.ae
+ 194.170.1.7 194.170.0.0/18 AS5384 -
mx records
mail.messaging.microsoft.com
+ 65.55.88.22 65.55.88.0/24 AS20046 mail.global.frontbridge.com
+ --- mail.global.frontbridge.com
+ 216.32.180.22 216.32.180.0/24 AS20046 mail.global.frontbridge.com
ip numbers of host
212.72.12.122
ptrs of ip numbers
i122.tb-as-17.omantel.net.om
hostnames sharing ip with a-records
i122.tb-as-17.omantel.net.om