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Sorry, we have no information about pliki.idg.com.pl. idg.com.pl is delegated to two nameservers, however two extra nameservers are listed in the zone. Two of them are on the same IP network. Incoming mail for idg.com.pl is handled by one mailserver at idg.com.pl themselves. idg.com.pl has one IP number.

idg.com.pl
a records
 
+ 194.69.207.152 194.69.207.0/24 AS25443  
+ ---  
ns-soa records
dns.idg.com.pl
+ 194.69.207.7 194.69.207.0/24 AS25443 -
+ --- -
ns records
dns2.idg.com.pl
+ 194.69.207.6 194.69.207.0/24 AS25443 -
+ --- -
+ --- pliki.idg.com.pl
dns.atman.pl
+ 85.232.226.102 85.232.224.0/19 AS15694 ans1.atman.pl
+ --- ans1.atman.pl
dns2.atman.pl
+ 77.79.235.102 77.79.192.0/18 AS15694 ans2.atman.pl
+ --- ans2.atman.pl
dns.idg.com.pl
+ 194.69.207.7 194.69.207.0/24 AS25443 -
+ --- -
mx records
relay1.idg.com.pl
+   AS?  
+ ---  
ip numbers using ptr to this host
194.69.207.6
nameservers missing in parent delegation
dns2.atman.pl
dns2.idg.com.pl