DNSBL Spam Check

Checked IP: 51.91.128.125
rDNS/PTR record: mail1.mxb.infra.improvmx.com

Not Listed: 26 checks
Check Response time
Found rDNS/PTR: mail1.mxb.infra.improvmx.com
28.1050 ms
Inactive: 2
Inactive
Response in: 8.901592 seconds
Amount of searched blacklists: 26 (2 inactive)