go
webmail.mylogin.org has one IP number , which also has a corresponding reverse pointer. mylogin.org is a domain controlled by two nameservers at ac-info.com. They are on the same IP network. Incoming mail for mylogin.org is handled by two mailservers at login.org. They are on the same IP network. mylogin.org has one IP number. webmail.mylogin.org is hosted on a server in Switzerland.

webmail.mylogin.org
a records
 
+ 81.221.254.197 81.221.0.0/16 AS1836 -
+ --- -

mylogin.org
a records
 
+ 91.199.98.164 91.199.98.0/24 AS29691  
+ ---  
ns-soa records
mail.ac-info.com
+ 194.230.74.2 194.230.0.0/16 AS6730 -
+ --- -
ns records
mail.ac-info.com
+ 194.230.74.2 194.230.0.0/16 AS6730 -
+ --- -
ns2.ac-info.com
+ 194.230.74.3 194.230.0.0/16 AS6730 www.ac-info.com
+ --- www.ac-info.com
mx records
mx1.login.org
+ 194.230.108.113 194.230.0.0/16 AS6730 -
+ --- -
mx2.login.org
+ 194.230.108.114 194.230.0.0/16 AS6730 -
ip numbers of host
81.221.254.197
ptrs of ip numbers
webmail.mylogin.org
ip numbers using ptr to this host
81.221.254.197