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
137.189.133.0/24 The Chinese University of Hong Kong 256
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
137.189.145.111 ██████████ 3
123.255.64.6 ██████████ 3
137.189.97.18 ██████████ 3
137.189.76.60 ███████ 3
137.189.165.34 ██████████ 2
137.189.94.156 ██████████ 2
137.189.64.147 ██████████ 2
137.189.91.192 ██████████ 2
137.189.34.1 ██████████ 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 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
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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 & Database

Pingable IPs

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

IP Address ASN Details
137.189.76.7 AS3661 The Chinese University of Hong Kong 0.85ms from Hong Kong, HK
137.189.185.252 AS3661 The Chinese University of Hong Kong 1.05ms from Hong Kong, HK
137.189.47.242 AS3661 The Chinese University of Hong Kong 0.97ms from Hong Kong, HK
137.189.161.60 AS3661 The Chinese University of Hong Kong 1.00ms from Hong Kong, HK
137.189.133.253 AS3661 The Chinese University of Hong Kong 1.44ms from Hong Kong, HK
137.189.136.253 AS3661 The Chinese University of Hong Kong 1.41ms from Hong Kong, HK
137.189.240.252 AS3661 The Chinese University of Hong Kong 1.03ms from Hong Kong, HK
137.189.170.3 AS3661 The Chinese University of Hong Kong 1.29ms from Hong Kong, HK
203.188.64.38 AS3661 The Chinese University of Hong Kong 0.94ms from Hong Kong, HK
137.189.193.250 AS3661 The Chinese University of Hong Kong 1.07ms from Hong Kong, HK
137.189.57.67 AS3661 The Chinese University of Hong Kong 1.28ms from Hong Kong, HK
137.189.72.69 AS3661 The Chinese University of Hong Kong 0.95ms from Hong Kong, HK
137.189.140.253 AS3661 The Chinese University of Hong Kong 1.45ms from Hong Kong, HK
137.189.54.252 AS3661 The Chinese University of Hong Kong 1.19ms from Hong Kong, HK
137.189.141.253 AS3661 The Chinese University of Hong Kong 1.40ms from Hong Kong, HK
137.189.155.61 AS3661 The Chinese University of Hong Kong 1.06ms from Hong Kong, HK
137.189.94.195 AS3661 The Chinese University of Hong Kong 0.85ms from Hong Kong, HK
137.189.192.49 AS3661 The Chinese University of Hong Kong 0.78ms from Hong Kong, HK
123.255.64.1 AS3661 The Chinese University of Hong Kong 0.88ms from Hong Kong, HK
137.189.56.6 AS3661 The Chinese University of Hong Kong 1.15ms from Hong Kong, HK
137.189.242.253 AS3661 The Chinese University of Hong Kong 1.04ms from Hong Kong, HK
137.189.95.253 AS3661 The Chinese University of Hong Kong 1.11ms from Hong Kong, HK
137.189.164.2 AS3661 The Chinese University of Hong Kong 1.73ms from Hong Kong, HK
137.189.88.127 AS3661 The Chinese University of Hong Kong 0.91ms from Hong Kong, HK
137.189.179.125 AS3661 The Chinese University of Hong Kong 0.94ms 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
69.138.163.61 AS7922 Comcast Cable Communications, LLC 5.25ms from Ashburn, US
79.107.43.237 AS25472 Nova Telecommunications & Media Single Member S.A 7.80ms from Athens, GR
20.96.108.237 AS8075 Microsoft Corporation 0.29ms from Boydton, US
117.202.199.173 AS9829 National Internet Backbone 13.75ms from Chennai, IN
73.176.127.45 AS7922 Comcast Cable Communications, LLC 11.37ms from Chicago, US
5.196.87.253 AS16276 OVH SAS 0.27ms from Gravelines, FR
186.68.214.253 AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC) 6.84ms from Guayaquil, EC
94.62.125.125 AS12353 Vodafone Portugal 2.29ms from Lisbon, PT
186.65.123.157 AS263740 Corporacion Laceibanetsociety 1.31ms from New York City, US
71.43.247.45 AS33363 Charter Communications, Inc 6.65ms from Orlando, US
60.107.32.157 AS17676 SoftBank Corp. 3.78ms from Osaka, JP
217.128.231.45 AS3215 Orange S.A. 1.66ms from Paris, FR
134.158.203.61 AS789 Renater 1.30ms from Paris, FR
77.40.221.13 AS2116 GLOBALCONNECT AS 2.08ms from Sandefjord, NO
112.181.169.189 AS4766 Korea Telecom 2.28ms from Seoul, KR
129.215.9.253 AS786 Jisc Services Limited 10.11ms from Sheffield, GB
60.10.20.221 AS4837 CHINA UNICOM China169 Backbone 4.07ms from Tianjin, CN
49.231.200.61 AS45458 SBN-ISP/AWN-ISP and SBN-NIX/AWN-NIX 2.44ms from Bangkok, TH
138.207.202.189 AS11776 Breezeline 11.41ms from Boston, US
98.216.198.29 AS7922 Comcast Cable Communications, LLC 9.05ms from Boston, US
190.227.179.125 AS7303 Telecom Argentina S.A. 5.20ms from Cordoba, AR
79.237.84.61 AS3320 Deutsche Telekom AG 2.82ms from Frankfurt am Main, DE
47.111.78.45 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 4.18ms from Hangzhou, CN
36.20.12.93 AS4134 CHINANET-BACKBONE 6.14ms from Hangzhou, CN
123.184.29.45 AS4134 CHINANET-BACKBONE 2.23ms from Liaoyang, CN

Traceroute

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

$
traceroute -a -n -q1 -f2 -m9 123.255.70.70
traceroute to 123.255.70.70 (123.255.70.70): 9 hops max, 52 byte packets
2 [AS30059] 70.36.35.1 471.47 ms
3 *
4 *
5 *
6 [AS6181] 216.68.14.127 6.679 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Cincinnati, US
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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