itsc.cuhk.edu.hk SPF record

2 / 10 Lookups
0 Issues
459,584 IPv4 addresses
2.19 ⋅ 10 24 IPv6 addresses
v=spf1 include:spf.protection.outlook.com include:spftmems.itsc.cuhk.edu.hk ip4:137.189.10.0/23 ip6:2405:3000:3:118::/64 -all Copied

Terms

include:
spf.protection.outlook.com
Evaluate this SPF record and pass if it
passes.
Microsoft 365 / Outlook
Inbox software
or else
include:
spftmems.itsc.cuhk.edu.hk
Evaluate this SPF record and pass if it
passes.
or else
ip4:
137.189.10.0 / 23
pass if the sender's IP is between
137.189.10.0 and 137.189.11.255 (inclusive).
The Chinese University of Hong Kong
AS3661
or else
ip6:
2405:3000:3:118:: / 64
pass if the sender's IP is between
2405:3000:3:118:: and 2405:3000:3:118:ffff:ffff:ffff:ffff (inclusive).
The Chinese University of Hong Kong
AS3661
or else
-all
fail the email's SPF check.

Included records

v=spf1 include:spf.protection.outlook.com include:spftmems.itsc.cuhk.edu.hk ip4:137.189.10.0/23 ip6:2405:3000:3:118::/64 -all
6 x ip4 5 x ip6 -all

IP ranges

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
18.188.239.128 / 26
Amazon.com
AS16509
18.188.9.192 / 26
Amazon.com
AS16509
18.208.22.128 / 25
Amazon.com
AS14618
18.208.22.64 / 26
Amazon.com
AS14618
137.189.10.0 / 23
The Chinese University of Hong Kong
AS3661
2405:3000:3:118:: / 64
The Chinese University of Hong Kong
AS3661