Domains with DNS TXT v=spf1 a mx ptr ptr:smtp.ndsn.net mx:smtp.ndsn.net ~all

There are 15 domains that have DNS TXT set to v=spf1 a mx ptr ptr:smtp.ndsn.net mx:smtp.ndsn.net ~all. The top 15 records ordered by domain rank are listed below.

We're currently tracking 369,953,110 DNS TXT records. Use our API to retrieve detailed information for DNS domains and records. Data is updated daily.