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 69
IPv4 addresses 73,984
IPv6 addresses 79,229,371,440,083,952,629,200,000,000
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 69 domain names hosted across 53 IP addresses on this ASN.

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IP Address Domain Domains on this IP
137.189.172.9 ██████████ 4
137.189.145.111 ██████████ 3
137.189.76.60 ███████ 3
137.189.89.51 ██████████ 3
137.189.97.18 ██████████ 3
123.255.64.6 ██████████ 3
137.189.41.180 ███████ 2
137.189.94.156 ██████████ 2
137.189.91.192 ██████████ 2
137.189.99.7 ██████████ 2

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Peers

There are 17 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
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
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 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

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

IP Address ASN Details
137.189.128.253 AS3661 The Chinese University of Hong Kong 1.96ms from Hong Kong, HK
137.189.196.80 AS3661 The Chinese University of Hong Kong 1.76ms from Hong Kong, HK
137.189.141.253 AS3661 The Chinese University of Hong Kong 1.70ms from Hong Kong, HK
103.49.160.147 AS3661 The Chinese University of Hong Kong 1.27ms from Hong Kong, HK
137.189.43.252 AS3661 The Chinese University of Hong Kong 1.64ms from Hong Kong, HK
137.189.100.28 AS3661 The Chinese University of Hong Kong 7.46ms from Hong Kong, HK
137.189.63.252 AS3661 The Chinese University of Hong Kong 1.38ms from Hong Kong, HK
137.189.168.253 AS3661 The Chinese University of Hong Kong 1.43ms from Hong Kong, HK
137.189.184.247 AS3661 The Chinese University of Hong Kong 1.44ms from Hong Kong, HK
137.189.79.253 AS3661 The Chinese University of Hong Kong 1.43ms from Hong Kong, HK
137.189.91.252 AS3661 The Chinese University of Hong Kong 1.54ms from Hong Kong, HK
137.189.11.228 AS3661 The Chinese University of Hong Kong 1.72ms from Hong Kong, HK
137.189.140.253 AS3661 The Chinese University of Hong Kong 1.88ms from Hong Kong, HK
137.189.94.175 AS3661 The Chinese University of Hong Kong 1.29ms from Hong Kong, HK
137.189.54.252 AS3661 The Chinese University of Hong Kong 1.57ms from Hong Kong, HK
137.189.102.252 AS3661 The Chinese University of Hong Kong 1.54ms from Hong Kong, HK
137.189.161.60 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
137.189.72.252 AS3661 The Chinese University of Hong Kong 1.45ms from Hong Kong, HK
137.189.134.253 AS3661 The Chinese University of Hong Kong 1.83ms from Hong Kong, HK
137.189.25.126 AS3661 The Chinese University of Hong Kong 1.73ms from Hong Kong, HK
137.189.52.253 AS3661 The Chinese University of Hong Kong 1.46ms from Hong Kong, HK
137.189.133.253 AS3661 The Chinese University of Hong Kong 1.96ms from Hong Kong, HK
137.189.143.253 AS3661 The Chinese University of Hong Kong 1.81ms from Hong Kong, HK
137.189.81.253 AS3661 The Chinese University of Hong Kong 1.35ms from Hong Kong, HK
2405:3000:ca2d:bc0:202:45:188:2 AS3661 The Chinese University of Hong Kong 1.25ms 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
14.203.34.125 AS7545 TPG Telecom Limited 10.40ms from Adelaide, AU
12.78.98.173 AS7018 AT&T Enterprises, LLC 0.69ms from Atlanta, US
87.143.55.141 AS3320 Deutsche Telekom AG 2.61ms from Berlin, DE
84.193.113.141 AS6848 Telenet BV 6.49ms from Brussels, BE
123.144.191.13 AS4837 CHINA UNICOM China169 Backbone 2.92ms from Chongqing, CN
3.21.61.141 AS16509 Amazon.com, Inc. 0.15ms from Columbus, US
63.182.123.13 AS16509 Amazon.com, Inc. 0.37ms from Frankfurt am Main, DE
185.124.243.29 AS206775 novomind AG 0.50ms from Frankfurt am Main, DE
85.124.171.61 AS8412 T-Mobile Austria GmbH 0.82ms from Graz, AT
58.148.178.237 AS17858 LG POWERCOMM 2.04ms from Incheon, KR
81.155.82.93 AS2856 British Telecommunications PLC 11.22ms from London, GB
31.43.85.157 AS30886 PP KOM i TEX 0.79ms from Lviv, UA
64.56.85.61 AS7939 University of Central Florida 6.18ms from Miami, US
217.26.15.13 AS25513 PJSC Moscow city telephone network 2.57ms from Moscow, RU
72.76.208.125 AS701 Verizon Business 1.89ms from New York City, US
189.245.209.13 AS8151 UNINET 4.53ms from Santiago de Queretaro, MX
187.101.137.61 AS27699 TELEFÔNICA BRASIL S.A 2.64ms from Sao Paulo, BR
177.64.47.93 AS28573 Claro NXT Telecomunicacoes Ltda 6.38ms from Sao Paulo, BR
61.171.65.189 AS4811 China Telecom (Group) 3.59ms from Shanghai, CN
43.156.155.77 AS132203 Tencent Building, Kejizhongyi Avenue 0.61ms from Singapore, SG
35.189.135.237 AS396982 Google LLC 0.17ms from Tokyo, JP
40.130.59.237 AS7029 Windstream Communications LLC 0.30ms from Ashburn, US
125.63.11.77 AS38195 Superloop 1.21ms from Brisbane, AU
166.78.210.237 AS19994 Rackspace Hosting 0.65ms from Chicago, US
98.17.9.77 AS7029 Windstream Communications LLC 14.38ms from Chicago, US

Traceroute

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

$
traceroute -a -n -q1 -f4 -m12 137.189.204.109
traceroute to 137.189.204.109 (137.189.204.109): 12 hops max, 52 byte packets
4 [AS58389] 103.11.28.33 137.983 ms
5 [AS58389] 103.11.28.227 19.119 ms
6 *
8 [] 123.255.91.50 108.965 ms
9 [AS3661] 137.189.192.250 107.162 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Denpasar, ID
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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