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 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
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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ASN API & Database

Pingable IPs

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

IP Address ASN Details
137.189.139.253 AS3661 The Chinese University of Hong Kong 1.42ms from Hong Kong, HK
137.189.26.254 AS3661 The Chinese University of Hong Kong 1.51ms from Hong Kong, HK
137.189.141.253 AS3661 The Chinese University of Hong Kong 1.49ms from Hong Kong, HK
103.49.160.124 AS3661 The Chinese University of Hong Kong 1.01ms from Hong Kong, HK
137.189.100.224 AS3661 The Chinese University of Hong Kong 56.00ms from Tokyo, JP
137.189.58.2 AS3661 The Chinese University of Hong Kong 0.86ms from Hong Kong, HK
137.189.66.171 AS3661 The Chinese University of Hong Kong 1.24ms from Hong Kong, HK
137.189.64.155 AS3661 The Chinese University of Hong Kong 1.84ms from Hong Kong, HK
137.189.89.231 AS3661 The Chinese University of Hong Kong 0.91ms from Hong Kong, HK
137.189.101.252 AS3661 The Chinese University of Hong Kong 1.05ms from Hong Kong, HK
123.255.67.252 AS3661 The Chinese University of Hong Kong 1.04ms from Hong Kong, HK
137.189.35.121 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.96.62 AS3661 The Chinese University of Hong Kong 0.99ms from Hong Kong, HK
137.189.76.7 AS3661 The Chinese University of Hong Kong 0.86ms from Hong Kong, HK
137.189.134.253 AS3661 The Chinese University of Hong Kong 1.78ms from Hong Kong, HK
137.189.75.164 AS3661 The Chinese University of Hong Kong 0.98ms from Hong Kong, HK
137.189.180.239 AS3661 The Chinese University of Hong Kong 0.98ms from Hong Kong, HK
137.189.70.252 AS3661 The Chinese University of Hong Kong 1.28ms from Hong Kong, HK
137.189.27.252 AS3661 The Chinese University of Hong Kong 1.09ms from Hong Kong, HK
175.159.225.62 AS3661 The Chinese University of Hong Kong 1.38ms from Hong Kong, HK
137.189.127.253 AS3661 The Chinese University of Hong Kong 1.10ms from Hong Kong, HK
137.189.109.253 AS3661 The Chinese University of Hong Kong 1.18ms from Hong Kong, HK
137.189.40.30 AS3661 The Chinese University of Hong Kong 0.93ms from Hong Kong, HK
137.189.83.124 AS3661 The Chinese University of Hong Kong 1.04ms from Hong Kong, HK
137.189.54.253 AS3661 The Chinese University of Hong Kong 1.13ms 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
105.102.83.61 AS36947 Telecom Algeria 10.47ms from Algiers, DZ
68.118.194.61 AS20115 Charter Communications LLC 12.12ms from Ashburn, US
205.156.2.253 AS3477 National Oceanic and Atmospheric Administration 7.30ms from Ashburn, US
121.75.177.13 AS9500 One New Zealand Group Limited 2.35ms from Auckland, NZ
44.227.37.13 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
156.216.47.157 AS8452 TE-AS 3.37ms from Cairo, EG
96.53.107.125 AS6327 Shaw Communications 0.57ms from Edmonton, CA
45.173.239.29 AS268840 CAVALCANTE & HERCULANO LTDA 13.14ms from Fortaleza, BR
3.78.235.45 AS16509 Amazon.com, Inc. 0.20ms from Frankfurt am Main, DE
41.174.134.237 AS30844 Liquid Telecommunications Ltd 7.51ms from Lusaka, ZM
83.54.178.221 AS3352 TELEFONICA DE ESPANA S.A.U. 10.38ms from Madrid, ES
59.154.99.29 AS7474 SingTel Optus Pty Ltd 1.16ms from Melbourne, AU
64.56.85.61 AS7939 University of Central Florida 6.15ms from Miami, US
31.188.153.29 AS24608 WIND TRE S.P.A. 5.97ms from Milan, IT
79.59.66.77 AS3269 Telecom Italia S.p.A. 5.51ms from Milan, IT
97.83.172.189 AS20115 Charter Communications LLC 9.22ms from Minneapolis, US
212.48.148.253 AS12714 PJSC MegaFon 9.61ms from Moscow, RU
128.128.83.157 AS153259 Edgerede Private Limited 0.55ms from Mumbai, IN
165.251.13.157 AS27495 Open Text Corporation 3.52ms from New York City, US
92.129.22.13 AS3215 Orange S.A. 10.21ms from Paris, FR
79.189.145.173 AS5617 Orange Polska Spolka Akcyjna 1.96ms from Poznan, PL
187.67.52.45 AS28573 Claro NXT Telecomunicacoes Ltda 6.13ms from Rio de Janeiro, BR
181.219.98.93 AS28573 Claro NXT Telecomunicacoes Ltda 17.55ms from Sao Paulo, BR
152.255.20.29 AS26599 TELEFÔNICA BRASIL S.A 0.75ms from São Paulo, BR
45.83.75.253 AS208834 Coop Pank AS 0.57ms from Tallinn, EE

Traceroute

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

$
traceroute -a -n -q1 -m6 203.188.77.19
traceroute to 203.188.77.19 (203.188.77.19): 6 hops max, 52 byte packets
1 [AS15169] 72.14.239.92 250.524 ms
2 [] 123.255.91.50 261.069 ms
3 [AS3661] 137.189.192.250 269.952 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Berlin, DE
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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