DNSBL Spam Check

Checked IP: 153.106.124.17
rDNS/PTR record: usend.calvin.edu

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: usend.calvin.edu
323.7441 ms
Inactive: 2
Inactive
Response in: 5.2036531 seconds
Amount of searched blacklists: 25 (2 inactive)