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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ASN API & Database

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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Pingable IPs

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

IP Address ASN Details
137.189.142.253 AS3661 The Chinese University of Hong Kong 1.74ms from Hong Kong, HK
137.189.88.127 AS3661 The Chinese University of Hong Kong 1.15ms from Hong Kong, HK
137.189.18.84 AS3661 The Chinese University of Hong Kong 2.68ms from Hong Kong, HK
137.189.131.254 AS3661 The Chinese University of Hong Kong 1.32ms from Hong Kong, HK
137.189.133.253 AS3661 The Chinese University of Hong Kong 1.69ms from Hong Kong, HK
137.189.130.253 AS3661 The Chinese University of Hong Kong 1.33ms from Hong Kong, HK
137.189.39.2 AS3661 The Chinese University of Hong Kong 9.40ms from Hong Kong, HK
203.188.64.38 AS3661 The Chinese University of Hong Kong 1.17ms from Hong Kong, HK
137.189.132.253 AS3661 The Chinese University of Hong Kong 1.37ms from Hong Kong, HK
137.189.6.254 AS3661 The Chinese University of Hong Kong 1.89ms from Hong Kong, HK
103.49.163.254 AS3661 The Chinese University of Hong Kong 1.30ms from Hong Kong, HK
137.189.81.253 AS3661 The Chinese University of Hong Kong 1.39ms from Hong Kong, HK
137.189.86.254 AS3661 The Chinese University of Hong Kong 1.20ms from Hong Kong, HK
137.189.19.252 AS3661 The Chinese University of Hong Kong 1.34ms from Hong Kong, HK
137.189.196.240 AS3661 The Chinese University of Hong Kong 1.78ms from Hong Kong, HK
137.189.47.242 AS3661 The Chinese University of Hong Kong 1.29ms from Hong Kong, HK
137.189.58.2 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
137.189.97.89 AS3661 The Chinese University of Hong Kong 1.49ms from Hong Kong, HK
137.189.82.254 AS3661 The Chinese University of Hong Kong 1.34ms from Hong Kong, HK
137.189.141.253 AS3661 The Chinese University of Hong Kong 1.69ms from Hong Kong, HK
137.189.128.253 AS3661 The Chinese University of Hong Kong 1.52ms from Hong Kong, HK
137.189.76.253 AS3661 The Chinese University of Hong Kong 1.33ms from Hong Kong, HK
137.189.170.3 AS3661 The Chinese University of Hong Kong 1.56ms from Hong Kong, HK
137.189.70.254 AS3661 The Chinese University of Hong Kong 1.36ms from Hong Kong, HK
137.189.11.21 AS3661 The Chinese University of Hong Kong 1.72ms 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
3.83.244.61 AS14618 Amazon.com, Inc. 0.58ms from Ashburn, US
178.24.141.253 AS3209 Vodafone GmbH 3.37ms from Berlin, DE
222.243.181.125 AS4134 CHINANET-BACKBONE 2.54ms from Changsha, CN
222.177.124.93 AS4134 CHINANET-BACKBONE 0.92ms from Chongqing, CN
204.106.253.13 AS47038 DMCI Broadband, LLC. 5.90ms from Detroit, US
9.223.55.109 AS8075 Microsoft Corporation 0.16ms from Gaevle, SE
189.177.234.61 AS8151 UNINET 3.94ms from Guadalajara, MX
20.193.237.221 AS8075 Microsoft Corporation 0.15ms from Lohogaon, IN
153.177.194.77 AS4713 NTT DOCOMO BUSINESS,Inc. 5.57ms from Osaka, JP
97.115.105.189 AS209 CenturyLink Communications, LLC 1.32ms from Portland, US
83.20.171.237 AS5617 Orange Polska Spolka Akcyjna 18.46ms from Poznan, PL
117.193.120.221 AS9829 National Internet Backbone 15.18ms from Saint Thomas Mount, IN
5.53.133.125 AS13124 A1 Bulgaria EAD 4.28ms from Sofia, BG
74.176.177.29 AS8075 Microsoft Corporation 0.16ms from Tokyo, JP
209.205.80.157 AS25668 Cipherkey Exchange Corp. 8.07ms from Vancouver, CA
123.52.110.61 AS4134 CHINANET-BACKBONE 6.11ms from Zhengzhou, CN
3.102.184.237 AS16509 Amazon.com, Inc. 0.46ms from Auckland, NZ
16.147.212.141 AS16509 Amazon.com, Inc. 0.29ms from Boardman, US
221.236.243.221 AS4134 CHINANET-BACKBONE 12.89ms from Chengdu, CN
76.185.238.157 AS11427 Charter Communications Inc 9.77ms from Dallas, US
209.55.82.45 AS16823 Nortex Communications Company 4.72ms from Dallas, US
218.54.201.173 AS9318 SK Broadband Co Ltd 0.81ms from Incheon, KR
47.138.158.93 AS5650 Frontier Communications of America, Inc. 7.15ms from Los Angeles, US
38.55.19.109 AS8796 FASTNET DATA INC 0.30ms from Los Angeles, US
186.48.178.189 AS6057 Administracion Nacional de Telecomunicaciones 1.51ms from Montevideo, UY

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 137.189.116.176
traceroute to 137.189.116.176 (137.189.116.176): 6 hops max, 52 byte packets
2 [AS58061] 38.180.36.1 0.296 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Almaty, KZ
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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