Passive DNS replication
As a service to CERTs and incident response teams, BFK uses
passive DNS replication to collect public DNS data. Compared
to the ordinary domain name system, this database adds
further search capabilities.
This web interface must not be used for automated queries. For details about bulk queries please contact:
Please enter your query in the input field above. You can
enter IP addresses and domain names. A short explanation of
the output follows.
- IP address:
Known A RRs for this IP address are displayed, and CNAME RRs pointing to those records are included as well.
Furthermore, DNSBL entries for the IP address are displayed.
- Domain Name:
Resource records containing the domain name are shown.
There is a per-query limit of 100 records. New records are delayed by at least 20 Minutes. Only records observed within the last 7 days will be displayed.
The data presented here has been collected from the public Domain Name System using passive DNS replication. Technical measures ensure anonymization of data sources.