DNSBL Spam Check

Checked IP: 159.183.91.50
rDNS/PTR record: wfbtrbpn.outbound-mail.sendgrid.net

Not Listed: 25 checks
Check Response time
Found rDNS/PTR: wfbtrbpn.outbound-mail.sendgrid.net
11.7311 ms
Inactive: 2
Inactive
Response in: 5.921617 seconds
Amount of searched blacklists: 25 (2 inactive)