DNSBL Spam Check

Checked IP: 81.91.91.22
rDNS/PTR record: d369-s20.server4u.cz

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: d369-s20.server4u.cz
66.7849 ms
Inactive: 2
Inactive
Response in: 5.332984 seconds
Amount of searched blacklists: 25 (2 inactive)