DNSBL Spam Check

Checked IP: 54.68.41.21
rDNS/PTR record: guardpost-n04.usw2.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.
23.3572 ms
Blacklisted: SpamRATS! all
Try to delist your IP from all.spamrats.com
3,348.2630 ms
Not Listed: 24 checks
Check Response time
Found rDNS/PTR: guardpost-n04.usw2.mailgun.co
27.5810 ms
Inactive: 2
Inactive
Response in: 5.4331648 seconds
Amount of searched blacklists: 26 (2 inactive)