DNSBL Spam Check

Checked IP: 172.104.100.220
rDNS/PTR record: 172-104-100-220.ip.linodeusercontent.com

Listed: 1 findings
Finding Response time
Blacklisted: Spamhaus ZEN
Try to delist your IP from zen.spamhaus.org
Follow the instrucion on this website.
23.9968 ms
Not Listed: 25 checks
Check Response time
Found rDNS/PTR: 172-104-100-220.ip.linodeusercontent.com
23.4480 ms
Inactive: 2
Inactive
Response in: 2.7776301 seconds
Amount of searched blacklists: 26 (2 inactive)