DNSBL Spam Check

Checked IP: 90.187.45.21
rDNS/PTR record: no entry

Listed: 3 findings
Finding Response time
No rDNS/PTR found
Set PTR record for this IP
195.5872 ms
Blacklisted: usenix.org
Try to delist your IP from all.s5h.net
Follow the instrucion on this website.
26.5629 ms
Blacklisted: Barracuda Reputation Block List
Try to delist your IP from b.barracudacentral.org
Follow the instrucion on this website.
106.6082 ms
Blacklisted: Barracuda Reputation Block List (for SpamAssassin)
Try to delist your IP from bb.barracudacentral.org
107.2860 ms
Not Listed: 23 checks
Check Response time
Inactive: 2
Inactive
Response in: 6.3583348 seconds
Amount of searched blacklists: 26 (2 inactive)