DNSBL Spam Check

Checked IP: 20.51.6.32
rDNS/PTR record: mail-nam-cu03-ch.northcentralus.cloudapp.azure.com

Listed: 2 findings
Finding Response time
Blacklisted: usenix.org
Try to delist your IP from all.s5h.net
Follow the instrucion on this website.
26.2561 ms
Blacklisted: SpamRATS! all
Try to delist your IP from all.spamrats.com
3,443.2821 ms
Not Listed: 24 checks
Check Response time
Found rDNS/PTR: mail-nam-cu03-ch.northcentralus.cloudapp.azure.com
4.6220 ms
Inactive: 2
Inactive
Response in: 6.984097 seconds
Amount of searched blacklists: 26 (2 inactive)