fastandsecure.net SPF record

1 / 10 Lookups
0 Issues
458,754 IPv4 addresses
2.19 ⋅ 10 24 IPv6 addresses
v=spf1 ip4:104.42.121.228 ip4:20.55.195.8 include:spf.protection.outlook.com -all Copied

Terms

ip4:
104.42.121.228 / 32
pass if the sender's IP is between
104.42.121.228 and 104.42.121.228 (inclusive).
Microsoft
AS8075
or else
ip4:
20.55.195.8 / 32
pass if the sender's IP is between
20.55.195.8 and 20.55.195.8 (inclusive).
Microsoft
AS8075
or else
include:
spf.protection.outlook.com
Evaluate this SPF record and pass if it
passes.
Microsoft 365 / Outlook
Inbox software
or else
-all
fail the email's SPF check.

Included records

v=spf1 ip4:104.42.121.228 ip4:20.55.195.8 include:spf.protection.outlook.com -all
6 x ip4 5 x ip6 -all

IP ranges

104.42.121.228
Microsoft
AS8075
20.55.195.8
Microsoft
AS8075
40.92.0.0 / 15
Microsoft
AS8075
40.107.0.0 / 16
Microsoft
AS8075
52.100.0.0 / 15
Microsoft
AS8075
52.102.0.0 / 16
Microsoft
AS8075
52.103.0.0 / 17
Microsoft
AS8075
104.47.0.0 / 17
Microsoft
AS8075
2a01:111:f400:: / 48
Microsoft
AS8075
2a01:111:f403:: / 49
Microsoft
AS8075
2a01:111:f403:8000:: / 51
Microsoft
AS8075
2a01:111:f403:c000:: / 51
Microsoft
AS8075
2a01:111:f403:f000:: / 52
Microsoft
AS8075