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webmail.ptkonline.com has one IP number. ptkonline.com is delegated to three nameservers, however two delegated nameservers are missing in the zone and one other nameserver is listed. There are two duplicated IP numbers. Some of them are on the same IP network. Incoming mail for ptkonline.com is handled by one mailserver at dardanet.net. webmail.ptkonline.com is hosted on a server in Serbia.

webmail.ptkonline.com
a records
 
+ 213.163.96.122 213.163.96.0/22 AS8661  
+ ---  

ptkonline.com
ns-soa records
dns1.dardanet.net
+ 213.163.97.5 213.163.96.0/22 AS8661 dns1.dardanet.com
+ --- dns1.dardanet.com
ns records
dns1.dardanet.net
+ 213.163.97.5 213.163.96.0/22 AS8661 dns1.dardanet.com
+ --- dns1.dardanet.com
dns2.dardanet.net
+ 213.163.97.10 213.163.96.0/22 AS8661 ftp.dardanet.net
+ --- ftp.dardanet.net
+ --- dns2.dardanet.com
dns1.dardanet.com
+ 213.163.97.5 213.163.96.0/22 AS8661 -
+ --- -
dns2.dardanet.com
+ 213.163.97.10 213.163.96.0/22 AS8661 ftp.dardanet.net
+ --- ftp.dardanet.net
+ --- -
mx records
email.dardanet.net
+ 213.163.97.3 213.163.96.0/22 AS8661 -
+ --- -
ip numbers of host
213.163.96.122
nameservers missing in parent delegation
dns2.dardanet.net
nameservers missing in zone
dns1.dardanet.com
dns2.dardanet.com