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 70
IPv4 addresses 73,984
IPv6 addresses 79,229,371,440,083,952,222,718,656,512
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 70 domain names hosted across 53 IP addresses on this ASN.

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IP Address Domain Domains on this IP
137.189.89.51 ██████████ 3
123.255.64.6 ██████████ 3
137.189.76.60 ██████████ 3
137.189.97.18 ██████████ 3
137.189.145.111 ██████████ 3
137.189.99.7 ██████████ 2
137.189.165.34 ██████████ 2
137.189.91.192 ██████████ 2
137.189.64.147 ██████████ 2
137.189.172.9 ██████████ 2

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Peers

There are 19 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
AS38008 Aperture Science 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
AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
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

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

IP Address ASN Details
137.189.72.69 AS3661 The Chinese University of Hong Kong 0.99ms from Hong Kong, HK
137.189.196.80 AS3661 The Chinese University of Hong Kong 1.53ms from Hong Kong, HK
137.189.43.253 AS3661 The Chinese University of Hong Kong 1.02ms from Hong Kong, HK
137.189.2.30 AS3661 The Chinese University of Hong Kong 1.06ms from Hong Kong, HK
137.189.42.7 AS3661 The Chinese University of Hong Kong 0.94ms from Hong Kong, HK
137.189.130.253 AS3661 The Chinese University of Hong Kong 1.08ms from Hong Kong, HK
123.255.67.252 AS3661 The Chinese University of Hong Kong 1.04ms from Hong Kong, HK
137.189.51.252 AS3661 The Chinese University of Hong Kong 1.19ms from Hong Kong, HK
137.189.10.74 AS3661 The Chinese University of Hong Kong 1.52ms from Hong Kong, HK
137.189.90.247 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
2405:3000:3:c01:8137:189:192:92 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.160.132 AS3661 The Chinese University of Hong Kong 0.92ms from Hong Kong, HK
137.189.107.251 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.40.30 AS3661 The Chinese University of Hong Kong 0.93ms from Hong Kong, HK
137.189.151.253 AS3661 The Chinese University of Hong Kong 1.45ms from Hong Kong, HK
137.189.135.253 AS3661 The Chinese University of Hong Kong 1.39ms from Hong Kong, HK
123.255.64.1 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.70.252 AS3661 The Chinese University of Hong Kong 1.28ms from Hong Kong, HK
137.189.128.253 AS3661 The Chinese University of Hong Kong 1.41ms from Hong Kong, HK
137.189.9.53 AS3661 The Chinese University of Hong Kong 1.01ms from Hong Kong, HK
137.189.101.252 AS3661 The Chinese University of Hong Kong 1.05ms from Hong Kong, HK
137.189.25.126 AS3661 The Chinese University of Hong Kong 1.47ms from Hong Kong, HK
137.189.81.254 AS3661 The Chinese University of Hong Kong 1.20ms from Hong Kong, HK
137.189.149.253 AS3661 The Chinese University of Hong Kong 1.43ms from Hong Kong, HK
137.189.89.231 AS3661 The Chinese University of Hong Kong 0.91ms 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
67.145.146.93 AS19901 Brightspeed 9.01ms from Ashburn, US
68.118.194.61 AS20115 Charter Communications LLC 12.12ms from Ashburn, US
190.227.23.61 AS7303 Telecom Argentina S.A. 18.37ms from Asuncion, PY
181.93.166.221 AS7303 Telecom Argentina S.A. 17.76ms from Asuncion, PY
129.134.160.13 AS63293 Facebook, Inc. 0.21ms from Boston, US
197.155.250.29 AS37479 Telviva (Pty) Ltd 0.90ms from Cape Town, ZA
50.215.166.125 AS7922 Comcast Cable Communications, LLC 19.41ms from Detroit, US
81.155.82.93 AS2856 British Telecommunications PLC 6.30ms from Erith, GB
112.38.176.45 AS24444 Shandong Mobile Communication Company Limited 1.75ms from Jinan, CN
182.244.115.125 AS4134 CHINANET-BACKBONE 3.07ms from Kunming, CN
104.51.3.93 AS7018 AT&T Enterprises, LLC 2.13ms from Miami, US
31.190.227.13 AS1267 WIND TRE S.P.A. 2.33ms from Milan, IT
60.130.160.61 AS17676 SoftBank Corp. 3.83ms from Osaka, JP
79.187.110.205 AS5617 Orange Polska Spolka Akcyjna 1.75ms from Poznan, PL
1.178.43.29 AS136907 HUAWEI CLOUDS 0.52ms from Sao Paulo, BR
179.54.207.61 AS26615 TIM S/A 16.97ms from Sao Paulo, BR
189.109.142.61 AS10429 TELEFÔNICA BRASIL S.A 0.91ms from São Paulo, BR
122.118.156.125 AS3462 Data Communication Business Group 2.00ms from Taichung, TW
72.12.147.45 AS812 Rogers Communications Canada Inc. 5.69ms from Toronto, CA
102.188.26.205 AS24835 Vodafone Data 11.92ms from Cairo, EG
14.236.102.29 AS45899 VNPT Corp 2.13ms from Da Nang, VN
71.218.17.125 AS209 CenturyLink Communications, LLC 2.38ms from Denver, US
113.182.80.221 AS45899 VNPT Corp 3.36ms from Ho Chi Minh City, VN
195.39.197.205 AS28907 Internet Invest, Ltd. 0.26ms from Kyiv, UA
195.53.168.125 AS3352 TELEFONICA DE ESPANA S.A.U. 9.42ms from Madrid, ES

Traceroute

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

$
traceroute -a -n -q1 -m7 137.189.73.52
traceroute to 137.189.73.52 (137.189.73.52): 7 hops max, 52 byte packets
3 *
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Abu Dhabi, AE
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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