DNSBL Spam Check

Checked IP: 47.21.8.82
rDNS/PTR record: ool-2f150852.static.optonline.net

Not Listed: 26 checks
Check Response time
Found rDNS/PTR: ool-2f150852.static.optonline.net
100.0421 ms
Inactive: 2
Inactive
Response in: 2.1913481 seconds
Amount of searched blacklists: 26 (2 inactive)