DNSBL Spam Check

Checked IP: 2600:3c01:e000:3e6::6d4e:7061
rDNS/PTR record: ack.nmap.org

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: ack.nmap.org
182.1949 ms
Inactive: 2
Inactive
Response in: 2.568383 seconds
Amount of searched blacklists: 25 (2 inactive)