veritest.com SPF record

6 / 10 Lookups
1 Issue
458,754 IPv4 addresses
2.19 ⋅ 10 24 IPv6 addresses

The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.

v=spf1 ip4:65.213.75.37 ip4:65.213.75.38 include:spf.protection.outlook.com include:spf.frontbridge.com include:spfb.frontbridge.com ~all Copied

Terms

ip4:
65.213.75.37 / 32
pass if the sender's IP is between
65.213.75.37 and 65.213.75.37 (inclusive).
Verizon Business
AS701
or else
ip4:
65.213.75.38 / 32
pass if the sender's IP is between
65.213.75.38 and 65.213.75.38 (inclusive).
Verizon Business
AS701
or else
include:
spf.protection.outlook.com
Evaluate this SPF record and pass if it
passes.
Microsoft 365 / Outlook
Inbox software
or else
include:
spf.frontbridge.com
Evaluate this SPF record and pass if it
passes.
or else
include:
spfb.frontbridge.com
Evaluate this SPF record and pass if it
passes.
or else
~all
soft fail the email's SPF check.

Included records

v=spf1 ip4:65.213.75.37 ip4:65.213.75.38 include:spf.protection.outlook.com include:spf.frontbridge.com include:spfb.frontbridge.com ~all
6 x ip4 5 x ip6 -all
ptr:protection.outlook.com ptr:messaging.microsoft.com ptr:o365filtering.com -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable

IP ranges

65.213.75.37
Verizon Business
AS701
65.213.75.38
Verizon Business
AS701
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