DNSBL Spam Check

Checked IP: 209.51.188.17
rDNS/PTR record: lists.gnu.org

Not Listed: 26 checks
Check Response time
Found rDNS/PTR: lists.gnu.org
150.8911 ms
Inactive: 2
Inactive
Response in: 5.5162292 seconds
Amount of searched blacklists: 26 (2 inactive)