8 / 10
Lookups
1
Issue
811,098
IPv4 addresses
2.19 â‹… 10
24
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ip4:148.163.157.161 ip4:148.163.159.161 ip4:54.240.47.53 ip4:54.240.47.54 ip4:142.0.186.100 ip4:142.0.180.105 include:spf.clearslide.com include:spf.protection.outlook.com include:spf.constantcontact.com include:sendgrid.net
include:amazonses.com include:mktomail.com ptr:appriver.com ~all
Copied
Terms
ip4:
148.163.157.161 / 32
pass
if the sender's IP is between
148.163.157.161 and 148.163.157.161 (inclusive).
148.163.157.161 and 148.163.157.161 (inclusive).
Proofpoint
AS26211
or else
ip4:
148.163.159.161 / 32
pass
if the sender's IP is between
148.163.159.161 and 148.163.159.161 (inclusive).
148.163.159.161 and 148.163.159.161 (inclusive).
Proofpoint
AS22843
or else
ip4:
54.240.47.53 / 32
pass
if the sender's IP is between
54.240.47.53 and 54.240.47.53 (inclusive).
54.240.47.53 and 54.240.47.53 (inclusive).
Amazon.com
AS14618
or else
ip4:
54.240.47.54 / 32
pass
if the sender's IP is between
54.240.47.54 and 54.240.47.54 (inclusive).
54.240.47.54 and 54.240.47.54 (inclusive).
Amazon.com
AS14618
or else
ip4:
142.0.186.100 / 32
pass
if the sender's IP is between
142.0.186.100 and 142.0.186.100 (inclusive).
142.0.186.100 and 142.0.186.100 (inclusive).
Rackspace Hosting
AS27357
or else
ip4:
142.0.180.105 / 32
pass
if the sender's IP is between
142.0.180.105 and 142.0.180.105 (inclusive).
142.0.180.105 and 142.0.180.105 (inclusive).
SocketLabs
AS53658
or else
include:
spf.clearslide.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
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.constantcontact.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Constant Contact
Email marketing
or else
include:
sendgrid.net
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
SendGrid
Email automation
or else
include:
amazonses.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Amazon SES
Email automation
or else
include:
mktomail.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Marketo
Marketing automation
or else
ptr:
appriver.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 ip4:148.163.157.161 ip4:148.163.159.161 ip4:54.240.47.53 ip4:54.240.47.54 ip4:142.0.186.100 ip4:142.0.180.105 include:spf.clearslide.com include:spf.protection.outlook.com include:spf.constantcontact.com include:sendgrid.net include:amazonses.com include:mktomail.com ptr:appriver.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
19 x ip4 ~all
6 x ip4 5 x ip6 -all
2 x ip4 ~all
12 x ip4 -all
12 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