DNSBL Spam Check

Checked IP: 52.101.68.21
rDNS/PTR record: mail-db4pr02cu00205.inbound.protection.outlook.com

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: mail-db4pr02cu00205.inbound.protection.outlook.com
17.3669 ms
Inactive: 2
Inactive
Response in: 24.1866958 seconds
Amount of searched blacklists: 25 (2 inactive)