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 79,229,371,440,083,952,222,718,656,512
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
137.189.97.18 ██████████ 3
137.189.76.60 ███████ 3
137.189.145.111 ██████████ 3
137.189.89.51 ██████████ 3
123.255.64.6 ██████████ 3
137.189.41.180 ███████ 2
137.189.172.9 ██████████ 2
137.189.99.7 ██████████ 2
137.189.91.192 ██████████ 2
137.189.43.96 ██████████ 2

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Peers

There are 18 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
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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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
137.189.16.185 AS3661 The Chinese University of Hong Kong 1.14ms from Hong Kong, HK
137.189.67.253 AS3661 The Chinese University of Hong Kong 1.39ms from Hong Kong, HK
137.189.109.252 AS3661 The Chinese University of Hong Kong 1.39ms from Hong Kong, HK
137.189.175.252 AS3661 The Chinese University of Hong Kong 1.61ms from Hong Kong, HK
137.189.11.21 AS3661 The Chinese University of Hong Kong 1.72ms from Hong Kong, HK
137.189.102.254 AS3661 The Chinese University of Hong Kong 1.16ms from Hong Kong, HK
137.189.65.252 AS3661 The Chinese University of Hong Kong 1.16ms from Hong Kong, HK
2405:3000:ca2d:bc0:202:45:188:2 AS3661 The Chinese University of Hong Kong 1.22ms from Hong Kong, HK
137.189.32.179 AS3661 The Chinese University of Hong Kong 1.21ms from Hong Kong, HK
137.189.142.253 AS3661 The Chinese University of Hong Kong 1.74ms from Hong Kong, HK
137.189.157.73 AS3661 The Chinese University of Hong Kong 2.34ms from Hong Kong, HK
137.189.6.254 AS3661 The Chinese University of Hong Kong 1.89ms from Hong Kong, HK
137.189.87.252 AS3661 The Chinese University of Hong Kong 1.30ms from Hong Kong, HK
137.189.58.2 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
175.159.225.193 AS3661 The Chinese University of Hong Kong 1.15ms from Hong Kong, HK
137.189.155.60 AS3661 The Chinese University of Hong Kong 1.38ms from Hong Kong, HK
137.189.43.252 AS3661 The Chinese University of Hong Kong 1.34ms from Hong Kong, HK
137.189.42.8 AS3661 The Chinese University of Hong Kong 1.15ms from Hong Kong, HK
137.189.135.253 AS3661 The Chinese University of Hong Kong 1.82ms from Hong Kong, HK
203.188.79.251 AS3661 The Chinese University of Hong Kong 1.27ms from Hong Kong, HK
137.189.193.254 AS3661 The Chinese University of Hong Kong 1.15ms from Hong Kong, HK
137.189.170.3 AS3661 The Chinese University of Hong Kong 1.56ms from Hong Kong, HK
137.189.160.147 AS3661 The Chinese University of Hong Kong 1.22ms from Hong Kong, HK
137.189.86.254 AS3661 The Chinese University of Hong Kong 1.20ms from Hong Kong, HK
137.189.38.21 AS3661 The Chinese University of Hong Kong 3.40ms 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
205.156.2.253 AS3477 National Oceanic and Atmospheric Administration 6.76ms from Ashburn, US
84.196.126.205 AS6848 Telenet BV 6.31ms from Brussels, BE
222.243.181.125 AS4134 CHINANET-BACKBONE 2.54ms from Changsha, CN
80.137.187.77 AS3320 Deutsche Telekom AG 8.00ms from Frankfurt am Main, DE
195.243.122.61 AS3320 Deutsche Telekom AG 0.63ms from Hamburg, DE
195.39.197.205 AS28907 Internet Invest, Ltd. 0.27ms from Kyiv, UA
198.74.254.205 AS23314 Summit Broadband 4.17ms from Miami, US
75.116.40.45 AS22394 Verizon Business 14.22ms from Morris Plains, US
153.37.96.205 AS4837 CHINA UNICOM China169 Backbone 0.74ms from Nanjing, CN
180.147.238.61 AS17511 OPTAGE Inc. 1.41ms from Osaka, JP
85.112.40.29 AS12389 PJSC Rostelecom 0.17ms from Samara, RU
98.6.169.13 AS11427 Charter Communications Inc 1.15ms from Schertz, US
120.142.84.125 AS10036 DLIVE 1.37ms from Seoul, KR
119.215.96.141 AS4766 Korea Telecom 1.37ms from Seoul, KR
81.96.30.29 AS5089 Virgin Media Limited 9.98ms from Maidenhead, GB
186.48.178.189 AS6057 Administracion Nacional de Telecomunicaciones 1.51ms from Montevideo, UY
50.100.114.77 AS577 Bell Canada 4.04ms from Montreal, CA
176.175.136.29 AS5410 Bouygues Telecom SA 4.12ms from Paris, FR
82.51.76.157 AS3269 Telecom Italia S.p.A. 7.42ms from Rome, IT
4.189.33.45 AS8075 Microsoft Corporation 0.42ms from Tokyo, JP
209.205.80.157 AS25668 Cipherkey Exchange Corp. 8.07ms from Vancouver, CA
79.187.149.221 AS5617 Orange Polska Spolka Akcyjna 5.42ms from Warsaw, PL
13.80.27.61 AS8075 Microsoft Corporation 0.20ms from Amsterdam, NL
140.86.223.237 AS31898 Oracle Corporation 0.45ms from Ashburn, US
196.250.98.237 AS36924 GVA Cote d'Ivoire SAS 2.41ms from Brazzaville, CG

Traceroute

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

$
traceroute -a -n -q1 -f4 -m13 137.189.22.24
traceroute to 137.189.22.24 (137.189.22.24): 13 hops max, 52 byte packets
4 [AS174] 154.54.60.22 1.104 ms
5 [AS174] 130.117.15.82 0.773 ms
6 [AS3491] 63.223.18.58 6.856 ms
7 [AS3491] 63.222.5.154 166.655 ms
8 [AS3491] 209.9.115.46 167.41 ms
9 [AS3662] 203.188.117.34 167.39 ms
10 [AS3661] 137.189.192.250 167.216 ms
11 *
12 *
13 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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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