AS number 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 66
Number of IPv4 73,984
Number of IPv6 79,229,371,440,083,952,222,718,656,512
ASN type Education
Registry apnic
Allocated 23 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
137.189.75.0/24 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 66 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
137.189.97.18 ██████████ 3
137.189.100.214 ██████████ 2
137.189.165.34 ██████████ 2
137.189.91.192 ██████████ 2
137.189.99.7 ██████████ 2
137.189.94.156 ██████████ 2
137.189.164.2 ██████████ 2
137.189.172.9 ██████████ 2

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Peers

There are 20 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 LIMITED
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
AS7660 Asia Pacific Advanced Network - Japan
AS7713 PT Telekomunikasi Indonesia
AS8359 MTS PJSC
AS9002 RETN Limited
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ASN API ASN Database Download

Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS3662 Joint Universities Computer Centre Limited
AS45474 NEXUSGUARD LIMITED
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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ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
175.159.226.254 AS3661 The Chinese University of Hong Kong 1.34ms from Hong Kong, HK
137.189.168.164 AS3661 The Chinese University of Hong Kong 1.10ms from Hong Kong, HK
137.189.69.138 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.74.113 AS3661 The Chinese University of Hong Kong 1.14ms from Hong Kong, HK
137.189.92.199 AS3661 The Chinese University of Hong Kong 1.01ms from Hong Kong, HK
137.189.243.252 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
137.189.4.150 AS3661 The Chinese University of Hong Kong 1.02ms from Hong Kong, HK
137.189.142.253 AS3661 The Chinese University of Hong Kong 1.64ms from Hong Kong, HK
137.189.127.190 AS3661 The Chinese University of Hong Kong 1.32ms from Hong Kong, HK
203.188.79.254 AS3661 The Chinese University of Hong Kong 1.19ms from Hong Kong, HK
137.189.179.125 AS3661 The Chinese University of Hong Kong 1.09ms from Hong Kong, HK
2405:3000:ca2d:bc0:202:45:188:2 AS3661 The Chinese University of Hong Kong 1.02ms from Hong Kong, HK
137.189.170.3 AS3661 The Chinese University of Hong Kong 1.33ms from Hong Kong, HK
137.189.11.96 AS3661 The Chinese University of Hong Kong 1.56ms from Hong Kong, HK
137.189.70.252 AS3661 The Chinese University of Hong Kong 1.28ms from Hong Kong, HK
137.189.96.56 AS3661 The Chinese University of Hong Kong 1.07ms from Hong Kong, HK
137.189.184.252 AS3661 The Chinese University of Hong Kong 1.16ms from Hong Kong, HK
103.49.163.254 AS3661 The Chinese University of Hong Kong 1.58ms from Hong Kong, HK
137.189.2.54 AS3661 The Chinese University of Hong Kong 1.17ms from Hong Kong, HK
137.189.91.253 AS3661 The Chinese University of Hong Kong 1.26ms from Hong Kong, HK
137.189.140.253 AS3661 The Chinese University of Hong Kong 1.66ms from Hong Kong, HK
137.189.15.252 AS3661 The Chinese University of Hong Kong 1.17ms from Hong Kong, HK
137.189.145.253 AS3661 The Chinese University of Hong Kong 1.53ms from Hong Kong, HK
137.189.180.239 AS3661 The Chinese University of Hong Kong 1.03ms from Hong Kong, HK
137.189.176.252 AS3661 The Chinese University of Hong Kong 1.30ms 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
213.127.131.45 AS33915 Vodafone Libertel B.V. 6.87ms from Amsterdam, NL
176.221.78.221 AS57595 Netlogic doo 12.59ms from Belgrade, RS
175.152.153.221 AS4837 CHINA UNICOM China169 Backbone 2.84ms from Chengdu, CN
172.244.202.13 AS7922 Comcast Cable Communications, LLC 6.41ms from Chicago, US
135.119.80.237 AS8075 Microsoft Corporation 0.20ms from Des Moines, US
68.54.93.221 AS7922 Comcast Cable Communications, LLC 6.58ms from Flint, US
67.167.139.93 AS7922 Comcast Cable Communications, LLC 9.47ms from Flint, US
106.53.216.61 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.94ms from Guangzhou, CN
84.144.157.141 AS3320 Deutsche Telekom AG 4.23ms from Hamburg, DE
3.98.232.93 AS16509 Amazon.com, Inc. 0.13ms from Montreal, CA
88.94.32.77 AS2119 Telenor Norge AS 9.46ms from Oslo, NO
69.20.254.13 AS812 Rogers Communications Canada Inc. 0.29ms from Ottawa, CA
73.240.32.61 AS7922 Comcast Cable Communications, LLC 5.76ms from Portland, US
79.189.145.173 AS5617 Orange Polska Spolka Akcyjna 1.98ms from Poznan, PL
166.230.127.13 AS29946 Union Wireless 4.20ms from Salt Lake City, US
186.10.219.61 AS27651 ENTEL CHILE S.A. 10.97ms from Santiago, CL
189.204.158.45 AS18734 Operbes, S.A. de C.V. 3.14ms from Santiago de Queretaro, MX
183.109.76.253 AS4766 Korea Telecom 0.72ms from Seoul, KR
202.30.234.45 AS9848 SEJONG NETWORKS 1.36ms from Seoul, KR
106.39.50.61 AS4847 China Networks Inter-Exchange 2.40ms from Tianjin, CN
178.112.192.29 AS25255 ==> TELE2 AUSTRIA <== 13.74ms from Vienna, AT
170.187.201.253 AS63949 Akamai Connected Cloud 0.38ms from Atlanta, US
110.164.124.253 AS45758 Triple T Broadband Public Company Limited 2.66ms from Bangkok, TH
191.176.43.61 AS28573 Claro NXT Telecomunicacoes Ltda 4.57ms from Brasilia, BR
59.178.48.221 AS9829 National Internet Backbone 7.70ms from Delhi, IN

Traceroute

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

$
traceroute -a -n -q1 -m6 137.189.104.178
traceroute to 137.189.104.178 (137.189.104.178): 6 hops max, 52 byte packets
1 [AS15169] 72.14.239.92 109.887 ms
2 [] 123.255.91.50 111.514 ms
3 [AS3661] 137.189.192.250 118.681 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Delhi, IN
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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