Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.optimalblue.com include:mail.zendesk.com include:sendgrid.net include:_spf.salesforce.com ip4:192.40.174.113 include:_spf.smtp.com ~all

There are 6 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.optimalblue.com include:mail.zendesk.com include:sendgrid.net include:_spf.salesforce.com ip4:192.40.174.113 include:_spf.smtp.com ~all. The top 6 records ordered by domain rank are listed below.

We're currently tracking 392,999,046 DNS TXT records. Use our API to retrieve detailed information for DNS domains and records. Data is updated daily.