cuhk.edu.hk SPF record

6 / 10 Lookups
0 Issues
617,286 IPv4 addresses
3.40 ⋅ 10 24 IPv6 addresses
v=spf1 include:spf.protection.outlook.com include:spfe.itsc.cuhk.edu.hk include:spftmems.itsc.cuhk.edu.hk ip4:137.189.0.0/16 ip4:123.255.65.0/24 ip6:2405:3000:3::/48 -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:
spfe.itsc.cuhk.edu.hk
Evaluate this SPF record and pass if it
passes.
or else
include:
spftmems.itsc.cuhk.edu.hk
Evaluate this SPF record and pass if it
passes.
or else
ip4:
137.189.0.0 / 16
pass if the sender's IP is between
137.189.0.0 and 137.189.255.255 (inclusive).
The Chinese University of Hong Kong
AS3661
or else
ip4:
123.255.65.0 / 24
pass if the sender's IP is between
123.255.65.0 and 123.255.65.255 (inclusive).
The Chinese University of Hong Kong
AS3661
or else
ip6:
2405:3000:3:: / 48
pass if the sender's IP is between
2405:3000:3:: and 2405:3000:3:ffff: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:spfe.itsc.cuhk.edu.hk include:spftmems.itsc.cuhk.edu.hk ip4:137.189.0.0/16 ip4:123.255.65.0/24 ip6:2405:3000:3::/48 -all
6 x ip4 5 x ip6 -all
3 x ip4 include:spf.alumni.cuhk.net include:mh.blackboard.com -all
3 x ip4 -all
1 x ip4 include:amazonses.com -all
12 x ip4 -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
117.20.42.11
Ex Libris (USA)
AS14148
117.20.42.12
Ex Libris (USA)
AS14148
143.89.106.229
Hong Kong University of Science and Technology
AS3363
202.45.188.46
The Hong Kong Internet Exchange
AS4641
202.45.188.47
The Hong Kong Internet Exchange
AS4641
202.45.188.50
The Hong Kong Internet Exchange
AS4641
69.196.241.0 / 24
Blackboard
AS22556
199.255.192.0 / 22
Amazon.com
AS16509
199.127.232.0 / 22
Amazon.com
AS16509
54.240.0.0 / 18
Amazon.com
AS16509
69.169.224.0 / 20
Amazon.com
AS16509
23.249.208.0 / 20
Amazon.com
AS16509
23.251.224.0 / 19
Amazon.com
AS16509
76.223.176.0 / 20
Amazon.com
AS16509
54.240.64.0 / 18
Amazon.com
AS14618
76.223.128.0 / 19
Amazon.com
AS16509
216.221.160.0 / 19
Amazon.com
AS16509
206.55.144.0 / 20
Amazon.com
AS16509
24.110.64.0 / 18
Amazon.com
AS16509
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
137.189.0.0 / 16
The Chinese University of Hong Kong
AS3661
123.255.65.0 / 24
The Chinese University of Hong Kong
AS3661
2405:3000:3:: / 48
The Chinese University of Hong Kong
AS3661