DNSBL Spam Check

Checked IP: 81.137.251.161
rDNS/PTR record: host81-137-251-161.in-addr.btopenworld.com

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: host81-137-251-161.in-addr.btopenworld.com
87.4288 ms
Inactive: 2
Inactive
Response in: 5.7018521 seconds
Amount of searched blacklists: 25 (2 inactive)