Domains with DNS TXT v=spf1 a include:_spf.google.com include:sendgrid.net include:_spf.nostradamus.nu ~all

There is 1 domain that have DNS TXT set to v=spf1 a include:_spf.google.com include:sendgrid.net include:_spf.nostradamus.nu ~all.

Top Domains with TXT set to v=spf1 a include:_spf.google.com include:sendgrid.net include:_spf.nostradamus.nu ~all