DNSBL Spam Check

Checked IP: 167.89.16.23
rDNS/PTR record: o2.email.sf-notifications.com

Not Listed: 26 checks
Check Response time
Found rDNS/PTR: o2.email.sf-notifications.com
4.2770 ms
Inactive: 2
Inactive
Response in: 1.7468631 seconds
Amount of searched blacklists: 26 (2 inactive)