Domains with DNS TXT v=spf1 a mx ip4:185.173.21.81 ip6:2a0b:3100:100:26:0:0:21:81 include:spf.protection.outlook.com -all

There are 15 domains that have DNS TXT set to v=spf1 a mx ip4:185.173.21.81 ip6:2a0b:3100:100:26:0:0:21:81 include:spf.protection.outlook.com -all. The top 15 records ordered by domain rank are listed below.

We're currently tracking 379,554,892 DNS TXT records. Use our API to retrieve detailed information for DNS domains and records. Data is updated daily.