137.189.196.0/24

AS3661  ·  The Chinese University of Hong Kong

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Summary

Country Hong Kong
Domain cuhk.edu.hk
ASN AS3661
Parent Range 137.189.0.0/16
Registry APNIC
ID CUHKNET

WHOIS Details

inetnum:        137.189.0.0 - 137.189.255.255
netname:        CUHKNET
descr:          The Chinese University of Hong Kong
descr:          Information Technology Services Centre
country:        HK
org:            ORG-CUOH1-AP
admin-c:        NA17-AP
tech-c:         NT27-AP
status:         ALLOCATED PORTABLE
abuse-c:        AC2019-AP
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CUHKNET-HK
mnt-routes:     MAINT-CUHKNET-HK
mnt-irt:        IRT-CUHKNET-HK
last-modified:  2022-12-05T02:41:49Z
source:         APNIC

irt:            IRT-CUHKNET-HK
address:        Information Technology Services Centre,
address:        The Chinese University of Hong Kong,
address:        Shatin, N.T.
address:        Hong Kong
e-mail:         noc-admin@cuhk.edu.hk
abuse-mailbox:  noc-admin@cuhk.edu.hk
admin-c:        NA17-AP
tech-c:         NT27-AP
auth:           # Filtered
remarks:        noc-admin@cuhk.edu.hk was validated on 2025-05-07
mnt-by:         MAINT-CUHKNET-HK
last-modified:  2025-09-04T05:53:49Z
source:         APNIC

organisation:   ORG-CUOH1-AP
org-name:       The Chinese University of Hong Kong
org-type:       LIR
country:        HK
address:        Information Technology Service Centre
address:        G/F., Pi-Chiu Building
phone:          +852-3943-8848
fax-no:         +852-2603-5001
e-mail:         noc-admin@cuhk.edu.hk
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:42Z
source:         APNIC

role:           ABUSE CUHKNETHK
country:        ZZ
address:        Information Technology Services Centre,
address:        The Chinese University of Hong Kong,
address:        Shatin, N.T.
address:        Hong Kong
phone:          +000000000
e-mail:         noc-admin@cuhk.edu.hk
admin-c:        NA17-AP
tech-c:         NT27-AP
nic-hdl:        AC2019-AP
remarks:        Generated from irt object IRT-CUHKNET-HK
remarks:        noc-admin@cuhk.edu.hk was validated on 2025-05-07
abuse-mailbox:  noc-admin@cuhk.edu.hk
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-07T01:09:26Z
source:         APNIC

person:         Network Administration Contact
address:        Information Technology Services Centre,
address:        The Chinese University of Hong Kong,
address:        Shatin, N.T.
address:        Hong Kong
country:        HK
phone:          +852-3943-8830
fax-no:         +852-2603-5001
e-mail:         noc-admin@cuhk.edu.hk
nic-hdl:        NA17-AP
notify:         noc-admin@cuhk.edu.hk
mnt-by:         MAINT-CUHKNET-HK
last-modified:  2012-09-19T01:45:32Z
source:         APNIC

person:         Network Technical Contact
address:        Information Technology Services Centre,
address:        The Chinese University of Hong Kong,
address:        Shatin, N.T.
address:        Hong Kong
country:        HK
phone:          +852-3943-8830
fax-no:         +852-2603-5001
e-mail:         noc-tech@cuhk.edu.hk
nic-hdl:        NT27-AP
notify:         noc-tech@cuhk.edu.hk
mnt-by:         MAINT-CUHKNET-HK
last-modified:  2012-09-19T01:46:08Z
source:         APNIC

route:          137.189.0.0/16
origin:         AS3661
descr:          Chinese University of Hong Kong (The) Information Technology Service Centre G/F., Pi-Chiu Building CUHK
mnt-by:         MAINT-CUHKNET-HK
last-modified:  2022-11-04T09:24:25Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 137.189.196.0/24

Range ASN Company Num of IPs
137.189.0.0/16 AS3661 The Chinese University of Hong Kong 65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity

Pingable IPs

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

IP Address ASN Details
137.189.196.253 AS3661 The Chinese University of Hong Kong 1.77ms 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
3.30.145.248 AS8987 Amazon Data Services Ireland Ltd 0.46ms from Boardman, US
20.94.1.136 AS8075 Microsoft Corporation 0.17ms from Boydton, US
171.213.164.8 AS4134 CHINANET-BACKBONE 3.15ms from Chengdu, CN
73.209.44.40 AS7922 Comcast Cable Communications, LLC 7.13ms from Chicago, US
148.170.23.120 AS397879 Luminate Fiber LLC 8.29ms from Denver, US
77.12.50.232 AS6805 Telefonica Germany GmbH & Co.OHG 4.16ms from Frankfurt am Main, DE
14.231.254.232 AS45899 VNPT Corp 1.40ms from Hanoi, VN
88.247.49.152 AS9121 Turk Telekomunikasyon Anonim Sirketi 15.91ms from Istanbul, TR
147.255.88.136 AS395954 Leaseweb USA, Inc. 0.28ms from Los Angeles, US
186.233.207.40 AS262958 CARRARO, HAINOSZ & CIA LTDA - ME 10.89ms from Sao Paulo, BR
192.141.35.88 AS267458 ITMINDS CONSULTORIA EM TECNOLOGIA DA INFORMACAO 1.07ms from Sao Paulo, BR
118.160.147.216 AS3462 Data Communication Business Group 2.81ms from Taipei, TW
42.124.99.216 AS10010 TOKAI Communications Corporation 8.76ms from Tokyo, JP
223.244.137.72 AS4134 CHINANET-BACKBONE 11.82ms from Wuhan, CN
64.179.48.40 AS7029 Windstream Communications LLC 10.39ms from Chicago, US
4.249.147.136 AS8075 Microsoft Corporation 0.18ms from Des Moines, US
109.56.150.136 AS44034 Hi3G Access AB 8.83ms from Falkenberg, SE
149.224.233.200 AS15943 wilhelm.tel GmbH 0.46ms from Hamburg, DE
27.6.144.184 AS17488 Hathway IP Over Cable Internet 7.34ms from Hyderabad, IN
37.151.242.216 AS9198 JSC Kazakhtelecom 4.71ms from Karagandy, KZ
125.63.134.24 AS7474 SingTel Optus Pty Ltd 13.23ms from Melbourne, AU
23.82.137.104 AS393886 Leaseweb USA, Inc. 0.32ms from Miami, US
72.229.186.184 AS12271 Charter Communications Inc 3.42ms from New York City, US
200.220.171.200 AS61317 Hivelocity LLC 0.68ms from Osasco, BR
52.3.168.248 AS14618 Amazon.com, Inc. 0.18ms from Reston, US

Traceroute

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

$
traceroute -a -n -q1 -f4 137.189.196.251
traceroute to 137.189.196.251 (137.189.196.251): 64 hops max, 52 byte packets
4 [AS3491] 63.218.205.70 1.771 ms
5 [AS3491] 209.9.115.50 4.304 ms
Measurement taken from IPinfo ProbeNet in Hong Kong, HK
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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