202.40.138.0/24

AS3363  ·  Hong Kong University of Science and Technology

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Summary

Country Hong Kong
Domain ust.hk
ASN AS3363
Registry APNIC
ID NETBLK-USTHK-NETC

WHOIS Details

inetnum:        202.40.138.0 - 202.40.139.255
netname:        NETBLK-USTHK-NETC
descr:          Hong Kong University of Science and Technology
country:        HK
org:            ORG-HKUO1-AP
admin-c:        CC47-AP
tech-c:         KT29-AP
abuse-c:        AH825-AP
status:         ASSIGNED PORTABLE
remarks:        ----------------------------
remarks:        Send abuse reports to
remarks:        abuse@ust.hk
remarks:        ----------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-HK-HKUST
mnt-irt:        IRT-HKUNISCITECH-NON-HK
last-modified:  2020-05-20T00:59:33Z
source:         APNIC

irt:            IRT-HKUNISCITECH-NON-HK
address:        Information Technology Services Center
address:        Hong Kong University of Science & Technology
address:        Clear Water Bay
address:        Kowloon
e-mail:         abuse@ust.hk
abuse-mailbox:  abuse@ust.hk
admin-c:        CC47-AP
tech-c:         KT29-AP
auth:           # Filtered
remarks:        abuse@ust.hk was validated on 2026-01-14
mnt-by:         MAINT-HK-HKUST
last-modified:  2026-01-14T01:11:51Z
source:         APNIC

organisation:   ORG-HKUO1-AP
org-name:       Hong Kong University of Science and Technology
org-type:       LIR
country:        HK
address:        Information Technology Services Center
address:        Clear Water Bay
phone:          +852-2358-6205
fax-no:         +852-2358-0967
e-mail:         dnradmin@ust.hk
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:44Z
source:         APNIC

role:           ABUSE HKUNISCITECHNONHK
country:        ZZ
address:        Information Technology Services Center
address:        Hong Kong University of Science & Technology
address:        Clear Water Bay
address:        Kowloon
phone:          +000000000
e-mail:         abuse@ust.hk
admin-c:        CC47-AP
tech-c:         KT29-AP
nic-hdl:        AH825-AP
remarks:        Generated from irt object IRT-HKUNISCITECH-NON-HK
remarks:        abuse@ust.hk was validated on 2026-01-14
abuse-mailbox:  abuse@ust.hk
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-14T01:12:21Z
source:         APNIC

person:         Charles Choy
address:        Information Technology Services Center Hong Kong University of Science & Technology Clear Water Bay Kowloon Hong Kong
country:        HK
phone:          +852 2358 6208
e-mail:         charles.choy@ust.hk
nic-hdl:        CC47-AP
remarks:        ----------
remarks:        imported from ARIN object:
remarks:        
remarks:        poc-handle:  CC293-ARIN
remarks:        is-role:     N
remarks:        last-name:   Choy
remarks:        first-name:  Charles
remarks:        street:      Information Technology Services Center Clear Water Bay
remarks:        city:        Kowloon
remarks:        country:     HK
remarks:        mailbox:     charles.choy@ust.hk
remarks:        bus-phone:   (852) 2358 6208
remarks:        reg-date:    1970-01-01
remarks:        changed:     hostmaster@arin.poc 20020925
remarks:        source:      ARIN
remarks:        
remarks:        ----------
notify:         charles.choy@ust.hk
mnt-by:         MAINT-HK-HKUST
last-modified:  2008-09-04T07:29:21Z
source:         APNIC

person:         K K Tam
nic-hdl:        KT29-AP
e-mail:         k.k.tam@ust.hk
address:        Information Technology Services Center
address:        Hong Kong University of Science & Technology
address:        Clear Water Bay
address:        Kowloon
address:        Hong Kong
phone:          +852 2358 6246
fax-no:         +852 2358 0967
country:        HK
mnt-by:         MAINT-HK-HKUST
last-modified:  2008-09-04T07:29:21Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 202.40.0.0/16

Range ASN Company Num of IPs
202.40.224.0/19 AS3758 EXPAN-DC 8,192
202.40.192.0/20 AS7651 Lingnan University 4,096
202.40.208.0/21 AS7577 Vocational Training Council 2,048
202.40.0.0/22 AS137549 Anycast Holdings Pty Ltd 1,024
202.40.0.0/23 AS137549 NODE1 INTERNET 512
202.40.148.0/23 AS4637 Reach Networks HK Ltd. 512
202.40.164.0/24 AS153315 Unibeam Networks 256
202.40.166.0/24 AS153315 Unibeam Networks 256
202.40.219.0/24 AS17764 The Open University of Hong Kong 256
202.40.157.0/24 AS17764 Hong Kong Metropolitan University 256
202.40.220.0/24 AS17764 The Open University of Hong Kong 256
202.40.137.0/24 AS17793 Leisure and Cultural Services Department 256
202.40.178.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.185.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.182.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.191.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.181.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.179.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.180.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.176.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.177.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.184.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.187.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.189.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.183.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.190.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.188.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.186.0/24 AS23991 Nationwide ISP & IPTSP 256
202.40.6.0/24 AS24127 iEnergizer 256
202.40.216.0/24 AS3661 CUHK Library 256
202.40.218.0/24 AS3662 HARNET Backbone 256
202.40.221.0/24 AS3662 HARNET Backbone 256
202.40.167.0/24 AS153315 Unibeam Networks 256
202.40.151.0/24 AS138647 The Hong Kong Academy for Performing Arts 256
202.40.134.0/24 AS152136 Hong Kong International School 256
202.40.217.0/24 AS7650 The Education University of Hong Kong 256
202.40.165.0/24 AS153315 Unibeam Networks 256

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
35.162.254.8 AS16509 Amazon.com, Inc. 0.25ms from Boardman, US
63.240.160.216 AS7018 AT&T Enterprises, LLC 2.82ms from Chicago, US
3.22.160.24 AS16509 Amazon.com, Inc. 0.13ms from Columbus, US
99.110.43.72 AS7018 AT&T Enterprises, LLC 18.73ms from Dallas, US
71.18.126.184 AS396986 Bytedance Inc. 0.62ms from Jakarta, ID
185.217.188.24 AS60757 Optinet LLP 0.82ms from Karagandy, KZ
23.26.252.8 AS61317 Hivelocity LLC 0.32ms from Los Angeles, US
88.36.78.152 AS3269 Telecom Italia S.p.A. 1.03ms from Milan, IT
129.25.20.40 AS11834 Drexel University 3.58ms from New York City, US
203.140.173.248 AS7511 SYNAPSE Co.,Ltd. 11.33ms from Osaka, JP
54.86.229.40 AS14618 Amazon.com, Inc. 0.45ms from Reston, US
2.34.241.72 AS30722 Fastweb SpA 9.07ms from Rome, IT
183.127.42.72 AS4766 Korea Telecom 1.95ms from Seoul, KR
114.34.53.8 AS3462 Data Communication Business Group 1.12ms from Taipei, TW
60.23.94.72 AS4837 CHINA UNICOM China169 Backbone 8.34ms from Tieling, CN
115.51.47.216 AS4837 CHINA UNICOM China169 Backbone 6.32ms from Zhengzhou, CN
123.31.98.152 AS45899 VNPT Corp 2.02ms from Ho Chi Minh City, VN
189.251.4.40 AS8151 UNINET 2.48ms from Mexico City, MX
178.252.253.136 AS24689 JSC Rosin.telekom 4.42ms from Moscow, RU
32.211.99.72 AS46690 Southern New England Telephone Company and SNET America, Inc. 9.51ms from New York City, US
34.12.10.88 AS396982 Google LLC 0.14ms from Oudeschip, NL
73.42.176.88 AS7922 Comcast Cable Communications, LLC 4.08ms from Seattle, US
222.116.118.88 AS4766 Korea Telecom 3.28ms from Seoul, KR
36.38.251.24 AS9697 LG HelloVision Corp. 8.34ms from Seoul, KR
221.205.135.248 AS4837 CHINA UNICOM China169 Backbone 3.35ms from Taiyuan, CN

Traceroute

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

$
traceroute -a -n -q1 -m6 202.40.138.185
traceroute to 202.40.138.185 (202.40.138.185): 6 hops max, 52 byte packets
1 [AS201094] 45.129.97.1 2.782 ms
2 [AS3255] 194.44.6.57 4.365 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Khmelnytskyi, UA
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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