Autonomous System details

AS3661

The Chinese University of Hong Kong  ·  cuhk.edu.hk

Hong Kong

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AS3661 – The Chinese University of Hong Kong

Field Value
Country Hong Kong
Website cuhk.edu.hk
Hosted domains 69
IPv4 addresses 73,984
IPv6 addresses 79,229,371,440,083,952,629,200,000,000
ASN type Education
Registry apnic
Allocated 24 years ago on Aug 01, 2002
Updated 3 years ago on Dec 05, 2022

IP Ranges

Netblock Company Num of IPs
137.189.0.0/16 The Chinese University of Hong Kong 65,536
203.188.64.0/20 The Chinese University of Hong Kong 4,096
123.255.64.0/21 Information Technology Services Centre 2,048
103.49.160.0/22 The Chinese University of Hong Kong 1,024
175.159.224.0/22 The Chinese University of Hong Kong 1,024
137.189.196.0/24 The Chinese University of Hong Kong 256
202.40.216.0/24 CUHK Library 256
Netblock Company
2405:3000::/32 The Chinese University of Hong Kong
2001:ce0:3::/48 Joint Universities Computer Centre Limited
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WHOIS Details

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                                                ASHandle:       AS3661
                                                OrgID:          AS3661
                                                ASName:         AS3661
                                                ASNumber:       AS3661
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 69 domain names hosted across 53 IP addresses on this ASN.

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IP Address Domain Domains on this IP
137.189.172.9 ██████████ 4
137.189.145.111 ██████████ 3
137.189.76.60 ███████ 3
137.189.89.51 ██████████ 3
137.189.97.18 ██████████ 3
123.255.64.6 ██████████ 3
137.189.41.180 ███████ 2
137.189.94.156 ██████████ 2
137.189.91.192 ██████████ 2
137.189.99.7 ██████████ 2

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Peers

There are 17 peers for this ASN.

Peers Name
AS132337 Axclusive
AS137207 Joint Universities Computer Centre Limited
AS140627 OneQode
AS18106 Viewqwest Pte Ltd
AS24482 SG.GS
AS36236 NetActuate, Inc
AS3662 Joint Universities Computer Centre Limited
AS39120 Convergenze S.p.A.
AS45474 Nexusguard Pte. Ltd.
AS45796 UIH / BB Connect
AS4635 Hong Kong Internet Exchange--Route Server 1
AS4641 The Hong Kong Internet Exchange Limited
AS49544 i3D.net B.V
AS55720 Gigabit Hosting Sdn Bhd
AS6939 Hurricane Electric LLC
AS7713 PT Telekomunikasi Indonesia
AS8359 MTS PJSC
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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS3662 Joint Universities Computer Centre Limited
AS45474 Nexusguard Pte. Ltd.
AS4641 The Hong Kong Internet Exchange Limited
AS6939 Hurricane Electric LLC
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

144 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
137.189.88.127 AS3661 The Chinese University of Hong Kong 1.22ms from Hong Kong, HK
137.189.11.228 AS3661 The Chinese University of Hong Kong 1.72ms from Hong Kong, HK
137.189.136.253 AS3661 The Chinese University of Hong Kong 1.90ms from Hong Kong, HK
137.189.192.206 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.49.33 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
103.49.160.147 AS3661 The Chinese University of Hong Kong 1.27ms from Hong Kong, HK
175.159.224.254 AS3661 The Chinese University of Hong Kong 1.58ms from Hong Kong, HK
137.189.133.253 AS3661 The Chinese University of Hong Kong 1.96ms from Hong Kong, HK
137.189.16.234 AS3661 The Chinese University of Hong Kong 1.21ms from Hong Kong, HK
137.189.37.246 AS3661 The Chinese University of Hong Kong 2.04ms from Hong Kong, HK
137.189.174.205 AS3661 The Chinese University of Hong Kong 3.34ms from Hong Kong, HK
137.189.86.254 AS3661 The Chinese University of Hong Kong 1.32ms from Hong Kong, HK
137.189.13.252 AS3661 The Chinese University of Hong Kong 1.34ms from Hong Kong, HK
137.189.150.253 AS3661 The Chinese University of Hong Kong 1.69ms from Hong Kong, HK
137.189.98.55 AS3661 The Chinese University of Hong Kong 1.11ms from Hong Kong, HK
137.189.144.254 AS3661 The Chinese University of Hong Kong 2.15ms from Hong Kong, HK
137.189.171.253 AS3661 The Chinese University of Hong Kong 1.42ms from Hong Kong, HK
137.189.108.29 AS3661 The Chinese University of Hong Kong 2.45ms from Hong Kong, HK
137.189.240.252 AS3661 The Chinese University of Hong Kong 1.46ms from Hong Kong, HK
137.189.95.252 AS3661 The Chinese University of Hong Kong 1.30ms from Hong Kong, HK
137.189.26.254 AS3661 The Chinese University of Hong Kong 1.82ms from Hong Kong, HK
137.189.172.107 AS3661 The Chinese University of Hong Kong 2.02ms from Hong Kong, HK
137.189.155.60 AS3661 The Chinese University of Hong Kong 1.54ms from Hong Kong, HK
175.159.226.254 AS3661 The Chinese University of Hong Kong 1.52ms from Hong Kong, HK
123.255.67.253 AS3661 The Chinese University of Hong Kong 1.62ms from Hong Kong, HK

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
73.212.208.13 AS7922 Comcast Cable Communications, LLC 10.76ms from Ashburn, US
20.115.10.141 AS8075 Microsoft Corporation 0.45ms from Ashburn, US
49.231.200.61 AS45458 SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX 2.23ms from Bangkok, TH
178.24.141.253 AS3209 Vodafone GmbH 3.34ms from Berlin, DE
94.224.137.221 AS6848 Telenet BV 5.06ms from Brussels, BE
77.181.179.189 AS6805 Telefonica Germany GmbH & Co.OHG 2.29ms from Frankfurt am Main, DE
120.84.127.205 AS17816 China Unicom IP network China169 Guangdong province 10.25ms from Guangzhou, CN
217.233.187.29 AS3320 Deutsche Telekom AG 2.44ms from Hamburg, DE
175.125.112.189 AS9318 SK Broadband Co Ltd 1.50ms from Incheon, KR
111.75.68.77 AS4134 CHINANET-BACKBONE 3.05ms from Nanchang, CN
221.181.222.77 AS56046 China Mobile communications corporation 1.26ms from Nanjing, CN
107.145.151.173 AS33363 Charter Communications, Inc 8.44ms from Orlando, US
71.43.247.45 AS33363 Charter Communications, Inc 6.68ms from Orlando, US
77.40.221.13 AS2116 GLOBALCONNECT AS 2.07ms from Sandefjord, NO
191.19.118.13 AS27699 TELEFÔNICA BRASIL S.A 3.05ms from Sao Paulo, BR
20.175.236.125 AS8075 Microsoft Corporation 0.18ms from Toronto, CA
81.223.96.61 AS8412 T-Mobile Austria GmbH 1.41ms from Vienna, AT
212.60.162.237 AS8447 A1 Telekom Austria AG 4.58ms from Vienna, AT
171.43.201.221 AS58563 CHINANET Hubei province network 0.30ms from Wuhan, CN
83.111.235.77 AS5384 Emirates Internet 2.72ms from Al Fujairah City, AE
83.247.106.205 AS12414 Solcon Internetdiensten B.V. 6.41ms from Amsterdam, NL
97.204.212.93 AS6167 Verizon Business 18.49ms from Ashburn, US
177.5.229.125 AS8167 V tal 14.47ms from Brasilia, BR
147.136.0.13 AS399060 BEC Communications, LLC 3.84ms from Dallas, US
52.30.204.125 AS16509 Amazon.com, Inc. 0.18ms from Dublin, IE

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 137.189.6.22
traceroute to 137.189.6.22 (137.189.6.22): 64 hops max, 52 byte packets
1 [AS15169] 72.14.239.92 1.605 ms
2 [] 123.255.91.50 1.977 ms
3 *
4 *
5 [AS3661] 137.189.6.22 2.692 ms
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS3661 at robtex.

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