7 / 10
Lookups
0
Issues
458,762
IPv4 addresses
2.19 ⋅ 10
24
IPv6 addresses
v=spf1 mx ip6:2a01:430:100:5c::2 a:d24.westmaster.com ip4:185.58.41.176 ip4:77.93.193.48 a:cis.masterdc.com a:d4023.masterinter.net a:cloud-2123.masterinter.net ip4:81.31.45.148 include:spf.protection.outlook.com a:mailing.master.cz ~all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
2 IPv4 addresses
2 IPv6 addresses
or else
ip6:
2a01:430:100:5c::2 / 128
pass
if the sender's IP is between
2a01:430:100:5c::2 and 2a01:430:100:5c::2 (inclusive).
2a01:430:100:5c::2 and 2a01:430:100:5c::2 (inclusive).
MasterDC s.r.o.
AS24971
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ip4:
185.58.41.176 / 32
pass
if the sender's IP is between
185.58.41.176 and 185.58.41.176 (inclusive).
185.58.41.176 and 185.58.41.176 (inclusive).
MasterDC s.r.o.
AS24971
or else
ip4:
77.93.193.48 / 32
pass
if the sender's IP is between
77.93.193.48 and 77.93.193.48 (inclusive).
77.93.193.48 and 77.93.193.48 (inclusive).
MasterDC s.r.o.
AS24971
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
1 IPv6 address
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
1 IPv6 address
or else
ip4:
81.31.45.148 / 32
pass
if the sender's IP is between
81.31.45.148 and 81.31.45.148 (inclusive).
81.31.45.148 and 81.31.45.148 (inclusive).
MasterDC s.r.o.
AS24971
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
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 mx ip6:2a01:430:100:5c::2 a:d24.westmaster.com ip4:185.58.41.176 ip4:77.93.193.48 a:cis.masterdc.com a:d4023.masterinter.net a:cloud-2123.masterinter.net ip4:81.31.45.148 include:spf.protection.outlook.com a:mailing.master.cz ~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