DNSBL Spam Check

Checked IP: 72.4.116.13
rDNS/PTR record: smtp1-ext.iad2.corp.rackspace.com

Not Listed: 26 checks
Check Response time
Found rDNS/PTR: smtp1-ext.iad2.corp.rackspace.com
96.3681 ms
Inactive: 2
Inactive
Response in: 2.220238 seconds
Amount of searched blacklists: 26 (2 inactive)