1 / 10
Lookups
0
Issues
459,328
IPv4 addresses
2.19 ⋅ 10
24
IPv6 addresses
v=spf1 ip4:51.4.72.0/24 ip4:51.5.72.0/24 ip4:51.5.80.0/27 ip4:51.4.80.0/27 ip6:2a01:4180:4051:0800::/64 ip6:2a01:4180:4050:0800::/64 ip6:2a01:4180:4051:0400::/64 ip6:2a01:4180:4050:0400::/64 include:spf.protection.outlook.com -all
Copied
Terms
ip4:
51.4.72.0 / 24
pass
if the sender's IP is between
51.4.72.0 and 51.4.72.255 (inclusive).
51.4.72.0 and 51.4.72.255 (inclusive).
Microsoft
AS8075
or else
ip4:
51.5.72.0 / 24
pass
if the sender's IP is between
51.5.72.0 and 51.5.72.255 (inclusive).
51.5.72.0 and 51.5.72.255 (inclusive).
Microsoft
AS8075
or else
ip4:
51.5.80.0 / 27
pass
if the sender's IP is between
51.5.80.0 and 51.5.80.31 (inclusive).
51.5.80.0 and 51.5.80.31 (inclusive).
Microsoft
AS8075
or else
ip4:
51.4.80.0 / 27
pass
if the sender's IP is between
51.4.80.0 and 51.4.80.31 (inclusive).
51.4.80.0 and 51.4.80.31 (inclusive).
Microsoft
AS8075
or else
ip6:
2a01:4180:4051:800:: / 64
pass
if the sender's IP is between
2a01:4180:4051:800:: and 2a01:4180:4051:800:ffff:ffff:ffff:ffff (inclusive).
2a01:4180:4051:800:: and 2a01:4180:4051:800:ffff:ffff:ffff:ffff (inclusive).
or else
ip6:
2a01:4180:4050:800:: / 64
pass
if the sender's IP is between
2a01:4180:4050:800:: and 2a01:4180:4050:800:ffff:ffff:ffff:ffff (inclusive).
2a01:4180:4050:800:: and 2a01:4180:4050:800:ffff:ffff:ffff:ffff (inclusive).
or else
ip6:
2a01:4180:4051:400:: / 64
pass
if the sender's IP is between
2a01:4180:4051:400:: and 2a01:4180:4051:400:ffff:ffff:ffff:ffff (inclusive).
2a01:4180:4051:400:: and 2a01:4180:4051:400:ffff:ffff:ffff:ffff (inclusive).
or else
ip6:
2a01:4180:4050:400:: / 64
pass
if the sender's IP is between
2a01:4180:4050:400:: and 2a01:4180:4050:400:ffff:ffff:ffff:ffff (inclusive).
2a01:4180:4050:400:: and 2a01:4180:4050:400:ffff:ffff:ffff:ffff (inclusive).
or else
include:
spf.protection.outlook.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Microsoft 365 / Outlook
Inbox software
or else
-all
fail
the email's SPF check.
Included records
v=spf1 ip4:51.4.72.0/24 ip4:51.5.72.0/24 ip4:51.5.80.0/27 ip4:51.4.80.0/27 ip6:2a01:4180:4051:800::/64 ip6:2a01:4180:4050:800::/64 ip6:2a01:4180:4051:400::/64 ip6:2a01:4180:4050:400::/64 include:spf.protection.outlook.com -all
6 x ip4 5 x ip6 -all
IP ranges
2a01:111:f403:8000::
/ 51
Microsoft
AS8075
2a01:111:f403:8000::
2a01:111:f403:9fff:ffff:ffff:ffff:ffff
2a01:111:f403:c000::
/ 51
Microsoft
AS8075
2a01:111:f403:c000::
2a01:111:f403:dfff:ffff:ffff:ffff:ffff
2a01:111:f403:f000::
/ 52
Microsoft
AS8075
2a01:111:f403:f000::
2a01:111:f403:ffff:ffff:ffff:ffff:ffff