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
137.189.97.18 ██████████ 3
137.189.89.51 ██████████ 3
123.255.64.6 ██████████ 3
137.189.145.111 ██████████ 3
137.189.76.60 ███████ 3
123.255.65.127 ██████████ 2
137.189.34.1 ██████████ 2
137.189.43.96 ██████████ 2
137.189.94.156 ██████████ 2
137.189.64.147 ██████████ 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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Pingable IPs

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

IP Address ASN Details
137.189.95.253 AS3661 The Chinese University of Hong Kong 1.11ms from Hong Kong, HK
137.189.193.250 AS3661 The Chinese University of Hong Kong 1.20ms from Hong Kong, HK
137.189.62.58 AS3661 The Chinese University of Hong Kong 1.45ms from Hong Kong, HK
137.189.94.195 AS3661 The Chinese University of Hong Kong 0.90ms from Hong Kong, HK
137.189.151.253 AS3661 The Chinese University of Hong Kong 1.45ms from Hong Kong, HK
137.189.64.110 AS3661 The Chinese University of Hong Kong 2.23ms from Hong Kong, HK
137.189.89.231 AS3661 The Chinese University of Hong Kong 0.94ms from Hong Kong, HK
137.189.4.174 AS3661 The Chinese University of Hong Kong 0.95ms from Hong Kong, HK
137.189.32.13 AS3661 The Chinese University of Hong Kong 0.99ms from Hong Kong, HK
137.189.56.254 AS3661 The Chinese University of Hong Kong 1.22ms from Hong Kong, HK
137.189.2.54 AS3661 The Chinese University of Hong Kong 1.07ms from Hong Kong, HK
137.189.88.127 AS3661 The Chinese University of Hong Kong 0.92ms from Hong Kong, HK
137.189.243.3 AS3661 The Chinese University of Hong Kong 1.00ms from Hong Kong, HK
137.189.165.253 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.150.253 AS3661 The Chinese University of Hong Kong 1.38ms from Hong Kong, HK
137.189.54.253 AS3661 The Chinese University of Hong Kong 1.24ms from Hong Kong, HK
137.189.196.251 AS3661 The Chinese University of Hong Kong 1.39ms from Hong Kong, HK
137.189.160.132 AS3661 The Chinese University of Hong Kong 0.99ms from Hong Kong, HK
137.189.19.252 AS3661 The Chinese University of Hong Kong 1.05ms from Hong Kong, HK
137.189.72.252 AS3661 The Chinese University of Hong Kong 1.05ms from Hong Kong, HK
137.189.57.122 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
137.189.29.253 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
2405:3000:ca2d:bc0:202:45:188:2 AS3661 The Chinese University of Hong Kong 1.37ms from Hong Kong, HK
137.189.144.253 AS3661 The Chinese University of Hong Kong 1.38ms from Hong Kong, HK
137.189.87.253 AS3661 The Chinese University of Hong Kong 1.15ms 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
120.10.243.173 AS4837 CHINA UNICOM China169 Backbone 6.28ms from Beijing, CN
185.124.243.29 AS206775 novomind AG 0.53ms from Frankfurt am Main, DE
217.225.86.173 AS3320 Deutsche Telekom AG 6.43ms from Frankfurt am Main, DE
92.26.100.253 AS13285 TalkTalk Communications Limited 3.49ms from London, GB
2.222.235.77 AS5607 Sky UK Limited 1.62ms from London, GB
153.177.194.77 AS4713 NTT DOCOMO BUSINESS,Inc. 5.61ms from Osaka, JP
217.141.145.93 AS3269 Telecom Italia S.p.A. 1.53ms from Rome, IT
192.116.140.173 AS12400 Partner Communications Ltd. 1.35ms from Tel Aviv, IL
114.165.29.173 AS4713 NTT DOCOMO BUSINESS,Inc. 13.97ms from Tokyo, JP
92.178.173.93 AS12479 Orange Espagne SA 6.49ms from Zaragoza, ES
111.63.171.141 AS24547 Hebei Mobile Communication Company Limited 0.13ms from Zhangjiakou, CN
61.54.213.13 AS4837 CHINA UNICOM China169 Backbone 9.63ms from Zhengzhou, CN
197.145.153.221 AS36884 Wana Corporate 7.94ms from Casablanca, MA
164.92.237.253 AS14061 DigitalOcean, LLC 0.19ms from Frankfurt am Main, DE
187.211.102.61 AS8151 UNINET 4.10ms from Guadalajara, MX
171.247.87.61 AS7552 Viettel Group 1.25ms from Ho Chi Minh City, VN
115.76.207.93 AS7552 Viettel Group 19.52ms from Ho Chi Minh City, VN
123.178.237.13 AS4134 CHINANET-BACKBONE 2.87ms from Hohhot, CN
153.35.179.29 AS4837 CHINA UNICOM China169 Backbone 4.00ms from Nanjing, CN
200.170.114.157 AS19182 TELEFÔNICA BRASIL S.A 4.60ms from Osasco, BR
91.163.213.109 AS12322 Free SAS 4.83ms from Paris, FR
13.37.214.237 AS16509 Amazon.com, Inc. 0.17ms from Paris, FR
184.184.145.173 AS22773 Cox Communications Inc. 0.77ms from Phoenix, US
52.235.146.93 AS8075 Microsoft Corporation 19.16ms from San Antonio, US
119.148.139.45 AS18313 LG HelloVision Corp. 6.73ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 137.189.223.146
traceroute to 137.189.223.146 (137.189.223.146): 6 hops max, 52 byte packets
2 [] 123.255.91.50 222.135 ms
3 [AS3661] 137.189.192.250 221.122 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Ashburn, 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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