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
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 52 IP addresses on this ASN.

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IP Address Domain Domains on this IP
123.255.64.6 ██████████ 3
137.189.89.51 ██████████ 3
137.189.97.18 ██████████ 3
137.189.34.1 ██████████ 2
137.189.41.180 ███████ 2
137.189.99.7 ██████████ 2
123.255.65.127 ██████████ 2
137.189.172.9 ██████████ 2
137.189.43.96 ██████████ 2
137.189.91.192 ██████████ 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.
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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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS3662 Joint Universities Computer Centre 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

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

IP Address ASN Details
137.189.240.252 AS3661 The Chinese University of Hong Kong 1.19ms from Hong Kong, HK
137.189.6.254 AS3661 The Chinese University of Hong Kong 1.60ms from Hong Kong, HK
137.189.79.252 AS3661 The Chinese University of Hong Kong 1.23ms from Hong Kong, HK
137.189.138.253 AS3661 The Chinese University of Hong Kong 1.52ms from Hong Kong, HK
137.189.13.253 AS3661 The Chinese University of Hong Kong 1.21ms from Hong Kong, HK
137.189.160.168 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.179.125 AS3661 The Chinese University of Hong Kong 1.08ms from Hong Kong, HK
137.189.127.253 AS3661 The Chinese University of Hong Kong 1.16ms from Hong Kong, HK
137.189.96.61 AS3661 The Chinese University of Hong Kong 1.14ms from Hong Kong, HK
137.189.29.253 AS3661 The Chinese University of Hong Kong 1.41ms from Hong Kong, HK
137.189.99.16 AS3661 The Chinese University of Hong Kong 1.09ms from Hong Kong, HK
137.189.176.253 AS3661 The Chinese University of Hong Kong 1.26ms from Hong Kong, HK
137.189.128.254 AS3661 The Chinese University of Hong Kong 1.69ms from Hong Kong, HK
137.189.98.20 AS3661 The Chinese University of Hong Kong 1.23ms from Hong Kong, HK
137.189.41.27 AS3661 The Chinese University of Hong Kong 1.03ms from Hong Kong, HK
137.189.196.253 AS3661 The Chinese University of Hong Kong 1.75ms from Hong Kong, HK
103.49.161.2 AS3661 The Chinese University of Hong Kong 1.05ms from Hong Kong, HK
137.189.42.7 AS3661 The Chinese University of Hong Kong 1.06ms from Hong Kong, HK
137.189.70.252 AS3661 The Chinese University of Hong Kong 1.42ms from Hong Kong, HK
137.189.168.164 AS3661 The Chinese University of Hong Kong 1.21ms from Hong Kong, HK
137.189.136.253 AS3661 The Chinese University of Hong Kong 1.72ms from Hong Kong, HK
137.189.51.254 AS3661 The Chinese University of Hong Kong 1.24ms from Hong Kong, HK
137.189.18.57 AS3661 The Chinese University of Hong Kong 2.04ms from Hong Kong, HK
137.189.88.132 AS3661 The Chinese University of Hong Kong 1.02ms from Hong Kong, HK
137.189.142.253 AS3661 The Chinese University of Hong Kong 1.50ms 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
213.124.0.189 AS33915 Vodafone Libertel B.V. 0.48ms from Amsterdam, NL
94.189.191.157 AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o. 6.97ms from Belgrade, RS
198.0.136.77 AS7922 Comcast Cable Communications, LLC 7.85ms from Boston, US
135.18.38.125 AS8075 Microsoft Corporation 0.22ms from Boydton, US
207.250.179.125 AS3549 Level 3 Parent, LLC 0.52ms from Charlotte, US
221.7.117.221 AS4837 CHINA UNICOM China169 Backbone 3.38ms from Chongqing, CN
173.209.71.93 AS14860 SMARTCOM TELEPHONE, LLC 12.17ms from Dallas, US
165.227.141.253 AS14061 DigitalOcean, LLC 0.18ms from Frankfurt am Main, DE
59.61.157.29 AS4134 CHINANET-BACKBONE 2.12ms from Fuzhou, CN
78.187.99.237 AS9121 Turk Telekomunikasyon Anonim Sirketi 7.89ms from Istanbul, TR
221.202.158.205 AS4837 CHINA UNICOM China169 Backbone 8.46ms from Liaoyang, CN
62.231.224.109 AS28885 OmanTel NAP 0.98ms from Muscat, OM
160.251.232.173 AS58791 GMO Internet Group, Inc. 9.84ms from Osaka, JP
37.191.153.125 AS2116 GLOBALCONNECT AS 3.08ms from Oslo, NO
43.207.224.77 AS16509 Amazon.com, Inc. 1.07ms from Tokyo, JP
123.126.111.141 AS4808 China Unicom Beijing Province Network 1.74ms from Beijing, CN
201.176.230.29 AS22927 Telefonica de Argentina 2.49ms from Buenos Aires, AR
190.51.196.109 AS22927 Telefonica de Argentina 2.69ms from Buenos Aires, AR
20.241.98.77 AS8075 Microsoft Corporation 0.30ms from Chicago, US
124.234.208.205 AS4134 CHINANET-BACKBONE 9.35ms from Dalian, CN
96.216.176.93 AS7922 Comcast Cable Communications, LLC 1.01ms from Denver, US
161.156.149.125 AS36351 IBM Cloud 0.70ms from Frankfurt am Main, DE
35.198.97.141 AS396982 Google LLC 0.12ms from Frankfurt am Main, DE
188.150.65.13 AS1257 Tele2 Sverige AB 9.54ms from Goeteborg, SE
187.201.84.29 AS8151 UNINET 1.15ms from Guadalajara, MX

Traceroute

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

$
traceroute -a -n -q1 -m6 137.189.170.89
traceroute to 137.189.170.89 (137.189.170.89): 6 hops max, 52 byte packets
1 [AS15169] 72.14.239.92 1.373 ms
2 [] 123.255.91.50 2.505 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
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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