DNSBL Spam Check

Checked IP: 18.213.159.127
rDNS/PTR record: guardpost-n03.use1.mailgun.co

Listed: 2 findings
Finding Response time
Blacklisted: usenix.org
Try to delist your IP from all.s5h.net
Follow the instrucion on this website.
100.7919 ms
Blacklisted: SpamRATS! all
Try to delist your IP from all.spamrats.com
110.5649 ms
Not Listed: 24 checks
Check Response time
Found rDNS/PTR: guardpost-n03.use1.mailgun.co
0.3600 ms
Inactive: 2
Inactive
Response in: 2.0479488 seconds
Amount of searched blacklists: 26 (2 inactive)