5 / 10
Lookups
0
Issues
463,112
IPv4 addresses
2.19 ⋅ 10
24
IPv6 addresses
v=spf1 mx include:musvc.com include:spf.protection.outlook.com include:send.register.it include:send2.register.it ip4:81.88.51.112/28 ~all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
2 IPv4 addresses
or else
include:
musvc.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:
send.register.it
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:
send2.register.it
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
ip4:
81.88.51.112 / 28
pass
if the sender's IP is between
81.88.51.112 and 81.88.51.127 (inclusive).
81.88.51.112 and 81.88.51.127 (inclusive).
REGISTER S.P.A.
AS39729
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 mx include:musvc.com include:spf.protection.outlook.com include:send.register.it include:send2.register.it ip4:81.88.51.112/28 ~all
9 x ip4 -all
6 x ip4 5 x ip6 -all
8 x ip4 ~all
9 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