AS number details

AS3661

The Chinese University of Hong Kong  ·  cuhk.edu.hk

Hong Kong

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS3661 – The Chinese University of Hong Kong

Field Value
Country Hong Kong
Website cuhk.edu.hk
Hosted domains 68
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
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view whois details › 

                                                ASHandle:       AS3661
                                                OrgID:          AS3661
                                                ASName:         AS3661
                                                ASNumber:       AS3661
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's Whois product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP Whois API IP Whois Database Download

Hosted Domains

There are 68 domain names hosted across 53 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
123.255.64.6 ██████████ 3
137.189.97.18 ██████████ 3
137.189.89.51 ██████████ 3
137.189.172.9 ██████████ 2
137.189.94.156 ██████████ 2
137.189.43.96 ██████████ 2
137.189.164.2 ██████████ 2
137.189.34.1 ██████████ 2
137.189.165.34 ██████████ 2
137.189.99.7 ██████████ 2

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API Hosted Domains Database Download

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.
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
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

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
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Downstreams

There are no downstreams for this ASN.

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
137.189.47.253 AS3661 The Chinese University of Hong Kong 1.09ms from Hong Kong, HK
123.255.66.65 AS3661 The Chinese University of Hong Kong 0.94ms from Hong Kong, HK
137.189.171.212 AS3661 The Chinese University of Hong Kong 0.98ms from Hong Kong, HK
137.189.132.253 AS3661 The Chinese University of Hong Kong 1.16ms from Hong Kong, HK
203.188.64.4 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.193.254 AS3661 The Chinese University of Hong Kong 1.08ms from Hong Kong, HK
137.189.65.252 AS3661 The Chinese University of Hong Kong 1.08ms from Hong Kong, HK
137.189.83.126 AS3661 The Chinese University of Hong Kong 1.09ms from Hong Kong, HK
137.189.67.254 AS3661 The Chinese University of Hong Kong 1.22ms from Hong Kong, HK
137.189.184.252 AS3661 The Chinese University of Hong Kong 1.16ms from Hong Kong, HK
203.188.79.254 AS3661 The Chinese University of Hong Kong 1.15ms from Hong Kong, HK
137.189.126.189 AS3661 The Chinese University of Hong Kong 1.07ms from Hong Kong, HK
137.189.240.253 AS3661 The Chinese University of Hong Kong 1.04ms from Hong Kong, HK
137.189.242.252 AS3661 The Chinese University of Hong Kong 1.12ms from Hong Kong, HK
175.159.226.254 AS3661 The Chinese University of Hong Kong 1.43ms from Hong Kong, HK
137.189.149.253 AS3661 The Chinese University of Hong Kong 1.39ms from Hong Kong, HK
137.189.243.3 AS3661 The Chinese University of Hong Kong 1.02ms from Hong Kong, HK
137.189.58.2 AS3661 The Chinese University of Hong Kong 0.91ms from Hong Kong, HK
137.189.160.160 AS3661 The Chinese University of Hong Kong 1.00ms from Hong Kong, HK
137.189.40.30 AS3661 The Chinese University of Hong Kong 0.96ms from Hong Kong, HK
137.189.35.69 AS3661 The Chinese University of Hong Kong 0.98ms from Hong Kong, HK
137.189.66.171 AS3661 The Chinese University of Hong Kong 1.27ms from Hong Kong, HK
137.189.88.132 AS3661 The Chinese University of Hong Kong 0.92ms from Hong Kong, HK
137.189.99.16 AS3661 The Chinese University of Hong Kong 0.97ms from Hong Kong, HK
137.189.7.252 AS3661 The Chinese University of Hong Kong 1.05ms 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
138.124.44.125 AS214238 HOST TELECOM LTD 1.90ms from Amsterdam, NL
40.130.59.237 AS7029 Windstream Communications LLC 0.28ms from Ashburn, US
74.97.49.141 AS701 Verizon Business 2.34ms from Boston, US
97.243.33.13 AS6167 Verizon Business 12.73ms from Chicago, US
183.65.12.221 AS4134 CHINANET-BACKBONE 7.60ms from Chongqing, CN
111.10.28.157 AS9808 China Mobile Communications Group Co., Ltd. 2.05ms from Chongqing, CN
73.177.27.109 AS7922 Comcast Cable Communications, LLC 15.60ms from Dallas, US
161.156.149.125 AS36351 IBM Cloud 0.70ms from Frankfurt am Main, DE
183.154.119.125 AS4134 CHINANET-BACKBONE 9.22ms from Hangzhou, CN
193.94.41.93 AS719 Elisa Oyj 1.30ms from Helsinki, FI
73.32.38.13 AS7922 Comcast Cable Communications, LLC 4.45ms from Houston, US
23.16.191.221 AS852 TELUS Communications Inc. 8.38ms from Kelowna, CA
2.61.240.93 AS12389 PJSC Rostelecom 8.70ms from Krasnoyarsk, RU
124.104.51.77 AS9299 Philippine Long Distance Telephone Company 1.34ms from Manila, PH
75.220.95.221 AS6167 Verizon Business 8.57ms from Miami, US
178.44.61.13 AS12389 PJSC Rostelecom 15.66ms from Moscow, RU
58.210.127.61 AS4134 CHINANET-BACKBONE 4.02ms from Nanjing, CN
95.80.254.237 AS29208 Quantcom, a.s. 6.36ms from Prague, CZ
187.149.114.221 AS8151 UNINET 19.81ms from Santiago de Queretaro, MX
138.59.161.13 AS15256 Itau Unibanco S.A. 3.55ms from Sao Paulo, BR
77.29.68.77 AS6821 Makedonski Telekom AD-Skopje 5.94ms from Skopje, MK
62.121.142.61 AS15541 Marcin Bochenek trading as CETI s.c. 5.53ms from Warsaw, PL
23.12.83.13 AS16625 Akamai Technologies, Inc. 0.18ms from Ashburn, US
45.27.76.13 AS7018 AT&T Enterprises, LLC 2.02ms from Atlanta, US
185.87.27.157 AS29262 Ideal Hosting Teknoloji A.S. 0.16ms from Bursa, TR

Traceroute

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

$
traceroute -a -n -q1 -f5 -m10 137.189.227.34
traceroute to 137.189.227.34 (137.189.227.34): 10 hops max, 52 byte packets
5 [AS6939] 184.105.64.126 154.988 ms
6 [] 123.255.91.50 154.027 ms
7 [AS3661] 137.189.192.250 154.061 ms
8 *
9 *
10 *
Measurement taken from IPinfo ProbeNet in Fremont, US
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.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs