DNSBL Spam Check

Checked IP: 199.15.213.53
rDNS/PTR record: potomac1053.mktomail.com

Listed: 2 findings
Finding Response time
Blacklisted: Redhawk.org
Try to delist your IP from access.redhawk.org
536.6070 ms
Blacklisted: usenix.org
Try to delist your IP from all.s5h.net
Follow the instrucion on this website.
58.4650 ms
Not Listed: 23 checks
Check Response time
Found rDNS/PTR: potomac1053.mktomail.com
193.4130 ms
Inactive: 2
Inactive
Response in: 5.1828301 seconds
Amount of searched blacklists: 25 (2 inactive)