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iamroot.tech
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
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CIDR calculator
beta
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What is my IPv4 and IPv6?
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QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
Password generator
World map, day/night + local time
beta
Internet tools
DNS lookup
DNS propagation check
Port scan + probeing
WHOIS / RDAP lookup
HTTP/S request tool
TLS/SSL certificate check
beta
E-mail DNSBL blacklist check
Reverse DNS
CIDR calculator
beta
ASN database lookup
beta
What is my IPv4 and IPv6?
GeoIP location
QR code generator
Dev tools
Color contrast checker
Color picker
Lorem ipsum generator
URL encode/decode
HTML encode/decode
BASE64 encode/decode
Hash calculator (CRC64 - MD5 - SHA - RIPEMD)
Misc tools
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World map, day/night + local time
beta
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Result
AS3661, The Chinese University of Hong Kong
Last update of data:
09-04-2024 06:18 UTC
ASN:
AS3661 (ERX-CUHKNET)
Country:
HK - Hong Kong (Asia)
Org.:
The Chinese University of Hong Kong
Stats:
Peers
14
IX'es
-
Prefixes
8
IPv4
+73K
IPv6
7,9E+28
Contact:
The Chinese University of Hong Kong
Information Technology Services Centre,
The Chinese University of Hong Kong,
Shatin, N.T.
Hong Kong
HK
+852-3943-8848
History
Date
Peers
IX'es
Prefixes
IPv4
IPv6
Before 16-01-2024
13
-
8
73.984
7,9E+28
16-01-2024
+1
-
-
-
-
Current
14
-
8
73.984
7,9E+28
Peers
Country
Relationship
ASN
Organization
Peers
Prefix'es
Britain (UK)
Peer
AS9002
RETN Limited
3.269
36
Hong Kong
Upstream
AS3662
Joint Universities Computer Centre Limited
21
8
Hong Kong
Upstream
AS4635
The Hong Kong Internet Exchange Limited
306
-
Hong Kong
Upstream
AS4641
The Hong Kong Internet Exchange Limited
18
3
Hong Kong
Upstream
AS137207
Joint Universities Computer Centre Limited
11
2
Hong Kong
Peer
AS38008
Aperture Science Limited
449
16
Japan
Upstream
AS7660
Asia Pacific Advanced Network - Japan
37
4
Malaysia
Peer
AS55720
Gigabit Hosting Sdn Bhd
178
338
Netherlands
Peer
AS49544
i3D.net B.V
6.510
134
Singapore
Upstream
AS132337
AXCLUSIVE PTE. LTD.
550
32
Singapore
Peer
AS18106
Viewqwest Pte Ltd
2.150
29
Singapore
Peer
AS24482
SG.GS
8.488
17
United States
Upstream
AS6939
Hurricane Electric LLC
10.632
262
United States
Peer
AS36236
NetActuate, Inc
7.343
206
Announced (uniq) prefixes
Country
ASN
Announced prefix
Description
Size
Hong Kong
AS3661
103.49.160.0/22
The Chinese University of Hong Kong
1.024
Hong Kong
AS3661
123.255.64.0/21
Information Technology Services Centre
2.048
Hong Kong
AS3661
137.189.0.0/16
The Chinese University of Hong Kong
65.536
Hong Kong
AS3661
175.159.224.0/22
The Chinese University of Hong Kong
1.024
Hong Kong
AS3661
202.40.216.0/24
CUHK Library
256
Hong Kong
AS3661
203.188.64.0/20
The Chinese University of Hong Kong
4.096
Country
ASN
Announced prefix
Description
Size
Hong Kong
AS3661
2001:ce0:3::/48
Joint Universities Computer Centre Limited
1,2E+24
Hong Kong
AS3661
2405:3000::/32
The Chinese University of Hong Kong
7,9E+28
Log
000
+000
Parse input (ASN)
000
+000
Search database for 'AS3661'
002
+002
1 ASN's found
002
+000
Done
002
+000
Load details of AS3661
015
+013
8 prefixes found
030
+015
14 peers found
032
+002
No matching IX connections found!
033
+001
1 links loaded, 0 verified
034
+002
2 historical items loaded
035
+000
Done