Umfangreiche Informationen zu IPs oder Domainnamen
Informationen zu IP Adressen abfragen (AS, RBL, DNS, Routen...)
Online Service um network Eigenschaften der eigenen IP abzufragen
understand the rest of the page before mailing me.
countries.nerd.dk is NOT a list of spammers, it is an IP-to-country DNS mapping service.