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
137.189.145.111 ██████████ 3
137.189.76.60 ██████████ 3
137.189.97.18 ██████████ 3
137.189.89.51 ██████████ 3
123.255.64.6 ██████████ 3
137.189.99.7 ██████████ 2
137.189.91.192 ██████████ 2
123.255.65.127 ██████████ 2
137.189.94.156 ██████████ 2
137.189.64.147 ██████████ 2

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Peers

There are 20 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
AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
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 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

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

IP Address ASN Details
137.189.42.9 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.65.253 AS3661 The Chinese University of Hong Kong 1.06ms from Hong Kong, HK
175.159.224.254 AS3661 The Chinese University of Hong Kong 1.41ms from Hong Kong, HK
103.49.163.254 AS3661 The Chinese University of Hong Kong 1.10ms from Hong Kong, HK
137.189.81.252 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
175.159.225.197 AS3661 The Chinese University of Hong Kong 1.31ms from Hong Kong, HK
137.189.89.231 AS3661 The Chinese University of Hong Kong 0.95ms from Hong Kong, HK
137.189.140.253 AS3661 The Chinese University of Hong Kong 1.41ms from Hong Kong, HK
137.189.132.254 AS3661 The Chinese University of Hong Kong 1.08ms from Hong Kong, HK
137.189.46.106 AS3661 The Chinese University of Hong Kong 1.00ms from Hong Kong, HK
137.189.70.253 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
137.189.185.253 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.15.252 AS3661 The Chinese University of Hong Kong 1.10ms from Hong Kong, HK
137.189.2.30 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.165.253 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.179.125 AS3661 The Chinese University of Hong Kong 0.90ms from Hong Kong, HK
137.189.29.252 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
137.189.161.61 AS3661 The Chinese University of Hong Kong 1.09ms from Hong Kong, HK
103.49.161.2 AS3661 The Chinese University of Hong Kong 0.92ms from Hong Kong, HK
137.189.109.253 AS3661 The Chinese University of Hong Kong 1.17ms from Hong Kong, HK
137.189.151.253 AS3661 The Chinese University of Hong Kong 1.40ms from Hong Kong, HK
137.189.34.1 AS3661 The Chinese University of Hong Kong 1.55ms from Hong Kong, HK
123.255.65.252 AS3661 The Chinese University of Hong Kong 1.13ms from Hong Kong, HK
137.189.90.247 AS3661 The Chinese University of Hong Kong 0.91ms from Hong Kong, HK
2405:3000:3:c01:8137:189:192:92 AS3661 The Chinese University of Hong Kong 1.08ms 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
50.215.49.77 AS7922 Comcast Cable Communications, LLC 8.31ms from Ashburn, US
50.201.78.157 AS7922 Comcast Cable Communications, LLC 1.47ms from Chicago, US
73.9.66.173 AS7922 Comcast Cable Communications, LLC 6.01ms from Chicago, US
93.229.253.61 AS3320 Deutsche Telekom AG 8.01ms from Frankfurt am Main, DE
169.212.2.13 AS4766 Korea Telecom 1.01ms from Incheon, KR
69.40.212.45 AS17378 TierPoint, LLC 0.25ms from Little Rock, US
154.25.15.157 AS174 Cogent Communications, LLC 0.72ms from London, GB
31.54.82.29 AS2856 British Telecommunications PLC 6.43ms from London, GB
68.5.255.13 AS22773 Cox Communications Inc. 6.01ms from Los Angeles, US
84.142.200.205 AS3320 Deutsche Telekom AG 5.98ms from Nuernberg, DE
78.5.207.141 AS8968 BT Italia S.p.A. 1.58ms from Rome, IT
45.83.75.253 AS208834 Coop Pank AS 0.61ms from Tallinn, EE
42.124.94.61 AS10010 TOKAI Communications Corporation 7.71ms from Tokyo, JP
60.95.174.237 AS17676 SoftBank Corp. 2.88ms from Tokyo, JP
177.250.48.141 AS27768 COMPAÑIA PARAGUAYA DE COMUNICACIONES S.A. (COPACO S.A.) 5.48ms from Asuncion, PY
4.31.12.109 AS3356 Level 3 Parent, LLC 0.37ms from Denver, US
217.250.210.29 AS3320 Deutsche Telekom AG 5.21ms from Frankfurt am Main, DE
116.109.129.157 AS24086 Viettel Corporation 5.72ms from Ho Chi Minh City, VN
73.32.38.13 AS7922 Comcast Cable Communications, LLC 4.43ms from Houston, US
72.76.208.125 AS701 Verizon Business 1.82ms from New York City, US
176.175.136.29 AS5410 Bouygues Telecom SA 3.85ms from Paris, FR
4.242.254.61 AS8075 Microsoft Corporation 0.29ms from Phoenix, US
141.126.72.237 AS20115 Charter Communications LLC 9.96ms from San Jose, US
23.51.20.237 AS20940 Akamai International B.V. 0.64ms from San Jose, US
120.204.228.29 AS24400 Shanghai Mobile Communications Co.,Ltd. 2.93ms from Shanghai, CN

Traceroute

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

$
traceroute -a -n -q1 -m5 137.189.121.134
traceroute to 137.189.121.134 (137.189.121.134): 5 hops max, 52 byte packets
1 [AS208450] 45.136.59.1 4.677 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Aktau, 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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