221.120.187.0/24

AS17975 · AS # for peering purpose with IX and ISP.

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

Summary

Country	Hong Kong
Domain	apstar.com
ASN	AS17975
Registry	APNIC
ID	APTNET

WHOIS Details

inetnum:        221.120.176.0 - 221.120.191.255
netname:        APTNET
descr:          APT Satellite (Apstar)
descr:          Internet Access Provider
descr:          Telco Grade Carrier
descr:          Serving China, Hong Kong & Asia
descr:          Based in Hong Kong
country:        HK
org:            ORG-ATSL1-AP
admin-c:        YW1169-AP
tech-c:         RY537-AP
abuse-c:        AA1939-AP
status:         ALLOCATED PORTABLE
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-HK-APTTEL
mnt-routes:     MAINT-HK-APTTEL
mnt-irt:        IRT-APT-HK
last-modified:  2023-08-02T06:02:08Z
source:         APNIC

irt:            IRT-APT-HK
address:        1/F., Phase 2,
address:        22 Dai Kwai St.,
address:        Tai Po Industrial Estate
address:        Hong Kong
e-mail:         apt_dc_cs@apstar.com
abuse-mailbox:  apt_dc_cs@apstar.com
admin-c:        YW1169-AP
tech-c:         YQ910-AP
auth:           # Filtered
remarks:        apt_dc_cs@apstar.com was validated on 2025-09-03
mnt-by:         MAINT-HK-APTTEL
last-modified:  2025-11-18T00:26:34Z
source:         APNIC

organisation:   ORG-ATSL1-AP
org-name:       APT Datamatrix Limited
org-type:       LIR
country:        HK
address:        22 Dai Kwai Street,
address:        Tai Po Industrial Estate, Tai Po
address:        New Territories
phone:          +852-2600-2100
fax-no:         +852-25220419
e-mail:         apt_dc_cs@apstar.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:50Z
source:         APNIC

role:           ABUSE APTHK
country:        ZZ
address:        1/F., Phase 2,
address:        22 Dai Kwai St.,
address:        Tai Po Industrial Estate
address:        Hong Kong
phone:          +000000000
e-mail:         apt_dc_cs@apstar.com
admin-c:        YW1169-AP
tech-c:         YQ910-AP
nic-hdl:        AA1939-AP
remarks:        Generated from irt object IRT-APT-HK
remarks:        apt_dc_cs@apstar.com was validated on 2025-09-03
abuse-mailbox:  apt_dc_cs@apstar.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-04T17:11:42Z
source:         APNIC

person:         Ricky Yiu
address:        1/F., Tower-2, 22 Dai Kwai St.,Tai Po Industrial Estate,Hong Kong
country:        HK
phone:          +852-26002252
e-mail:         ricky.yiu@apstar.com
nic-hdl:        RY537-AP
mnt-by:         MAINT-HK-APTTEL
last-modified:  2023-06-01T09:14:31Z
source:         APNIC

person:         Yan Song Wang
nic-hdl:        YW1169-AP
e-mail:         wangys@apstar.com
address:        1/F., Phase 2,
address:        22 Dai Kwai St.,
address:        Tai Po Industrial Estate
address:        Hong Kong
phone:          +852-26002135
fax-no:         +852-26002133
country:        HK
mnt-by:         MAINT-HK-APTTEL
last-modified:  2016-12-09T06:34:49Z
source:         APNIC

route:          221.120.176.0/20
descr:          APT Datamatrix Limited
origin:         AS17975
mnt-by:         MAINT-HK-APTTEL
last-modified:  2023-08-02T06:04:53Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 221.120.0.0/16

Range	ASN	Company	Num of IPs
221.120.128.0/20	AS4857	IP EXCHANGE International Networks	4,096
221.120.168.0/21	AS18070	Global Network Core Co.,Ltd.	2,048
221.120.96.0/21	AS135076	INFOCOM LIMITED	2,048
221.120.160.0/22	AS38901	EZECOM CO., LTD.	1,024
221.120.164.0/22	AS64098	TASMANET	1,024
221.120.97.0/24	AS135076	INFOCOM LIMITED	256
221.120.98.0/24	AS135076	INFOCOM LIMITED	256
221.120.99.0/24	AS135076	INFOCOM LIMITED	256
221.120.100.0/24	AS135076	INFOCOM LIMITED	256
221.120.81.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.82.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.83.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.238.0/24	AS17557	Ufone	256
221.120.128.0/24	AS4857	IP EXCHANGE International Networks	256
221.120.80.0/24	AS17421	Chunghwa Telecom Co.,Ltd.	256
221.120.101.0/24	AS135076	INFOCOM LIMITED	256
221.120.102.0/24	AS135076	INFOCOM LIMITED	256
221.120.103.0/24	AS135076	INFOCOM LIMITED	256
221.120.96.0/24	AS135076	INFOCOM LIMITED	256

Hosted domains

There are 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
221.120.187.34	hkairholidays.com	1
221.120.187.14	hka.systems	1

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

Read more

Pingable IPs

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

IP Address	ASN	Details
221.120.187.1	AS17975 AS # for peering purpose with IX and ISP.	`0.82ms` 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
77.163.152.40	AS1136 KPN B.V.	`1.13ms` from Amsterdam, NL
3.171.33.200	AS16509 Amazon.com, Inc.	`0.53ms` from Ashburn, US
67.186.14.200	AS7922 Comcast Cable Communications, LLC	`11.95ms` from Ashburn, US
44.252.95.56	AS16509 Amazon.com, Inc.	`0.52ms` from Boardman, US
71.235.131.120	AS7922 Comcast Cable Communications, LLC	`5.93ms` from Boston, US
167.103.6.136	AS53813 ZSCALER, INC.	`0.37ms` from Chennai, IN
220.103.231.88	AS9644 SK Telecom	`2.17ms` from Incheon, KR
84.18.238.232	AS42611 Full Fibre Limited	`5.59ms` from London, GB
88.37.66.216	AS3269 Telecom Italia S.p.A.	`2.03ms` from Milan, IT
200.144.25.168	AS28637 Cia Proc. de Dados do Estado de S Paulo - Prodesp	`1.96ms` from Osasco, BR
73.100.221.8	AS7922 Comcast Cable Communications, LLC	`8.74ms` from Providence, US
54.167.10.216	AS14618 Amazon.com, Inc.	`0.21ms` from Reston, US
163.176.181.72	AS31898 Oracle Corporation	`0.37ms` from Sao Paulo, BR
73.140.215.104	AS7922 Comcast Cable Communications, LLC	`3.79ms` from Seattle, US
14.35.86.152	AS4766 Korea Telecom	`1.51ms` from Seoul, KR
54.79.195.24	AS16509 Amazon.com, Inc.	`0.12ms` from Sydney, AU
31.146.253.232	AS35805 JSC "Silknet"	`3.09ms` from Tbilisi, GE
107.154.126.40	AS19551 Incapsula Inc	`0.56ms` from Ashburn, US
182.131.71.248	AS4134 CHINANET-BACKBONE	`6.27ms` from Chengdu, CN
65.63.152.232	AS8011 MongoDB, Inc.	`0.12ms` from Dublin, IE
80.134.186.232	AS3320 Deutsche Telekom AG	`4.45ms` from Duesseldorf, DE
101.36.112.168	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	`0.66ms` from Hong Kong, HK
211.222.99.40	AS4766 Korea Telecom	`0.83ms` from Incheon, KR
108.227.81.216	AS7018 AT&T Enterprises, LLC	`16.45ms` from Los Angeles, US
15.223.172.152	AS16509 Amazon.com, Inc.	`0.88ms` from Montreal, CA

Traceroute

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

traceroute -a -n -q1 -f4 221.120.187.4

traceroute to 221.120.187.4 (221.120.187.4): 64 hops max, 52 byte packets

4 [] 103.203.158.56 0.808 ms

5 [AS9902] 203.167.17.227 0.869 ms

6 [AS9902] 203.167.17.51 0.864 ms

7 *

8 *

9 *

10 [AS17975] 221.120.187.4 0.861 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On January 19th 2026

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.

An API 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