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Lookups
1
Issue
558,096
IPv4 addresses
2.97 ⋅ 10
28
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 include:_spf.google.com ptr:seinternal.com ptr:simplyspamfree.com ip4:185.201.16.0/22 include:spf.protection.outlook.com include:_spf.wpcloud.com -all
Copied
Terms
include:
_spf.google.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Gmail
Inbox software
or else
ptr:
seinternal.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ptr:
simplyspamfree.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
185.201.16.0 / 22
pass
if the sender's IP is between
185.201.16.0 and 185.201.19.255 (inclusive).
185.201.16.0 and 185.201.19.255 (inclusive).
Cogent Communications
AS174
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
include:
_spf.wpcloud.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
or else
-all
fail
the email's SPF check.
Included records
v=spf1 include:_spf.google.com ptr:seinternal.com ptr:simplyspamfree.com ip4:185.201.16.0/22 include:spf.protection.outlook.com include:_spf.wpcloud.com -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
2 x ip4 6 x ip6 ~all
6 x ip4 5 x ip6 -all
2 x ip4 -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