175.41.21.0/24

AS963 · N963 PTE. LTD.

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Summary

Country	Hong Kong
Domain	netsec.com
ASN	AS963
Registry	APNIC
ID	NETSEC

WHOIS Details

inetnum:        175.41.21.0 - 175.41.21.255
netname:        Netsec
descr:          Netsec
country:        HK
admin-c:        NN541-AP
tech-c:         NN541-AP
abuse-c:        AH815-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-HOSTCREST-HK
mnt-irt:        IRT-HOSTCREST-HK
last-modified:  2025-05-16T19:28:08Z
source:         APNIC

irt:            IRT-HOSTCREST-HK
address:        Unit 1702, Ramada Tower, Canton Rd, TST, KL
e-mail:         ipadmin@hostcrest.com
abuse-mailbox:  ipadmin@hostcrest.com
admin-c:        HLna1-AP
tech-c:         HLna1-AP
auth:           # Filtered
remarks:        ipadmin@hostcrest.com was validated on 2026-01-29
mnt-by:         MAINT-HOSTCREST-HK
last-modified:  2026-01-29T05:08:00Z
source:         APNIC

role:           ABUSE HOSTCRESTHK
country:        ZZ
address:        Unit 1702, Ramada Tower, Canton Rd, TST, KL
phone:          +000000000
e-mail:         ipadmin@hostcrest.com
admin-c:        HLna1-AP
tech-c:         HLna1-AP
nic-hdl:        AH815-AP
remarks:        Generated from irt object IRT-HOSTCREST-HK
remarks:        ipadmin@hostcrest.com was validated on 2026-01-29
abuse-mailbox:  ipadmin@hostcrest.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-01-29T04:39:23Z
source:         APNIC

role:           NETSEC NOC
address:        Suite 1007, 10/F, The Bay Hub, 17 Kai Cheung Rd, Kowloon Bay
country:        HK
phone:          +85227511100
e-mail:         noc@netsec.com
admin-c:        NN541-AP
tech-c:         NN541-AP
nic-hdl:        NN541-AP
mnt-by:         MAINT-NETSEC-HK
last-modified:  2025-03-14T05:55:40Z
source:         APNIC

route:          175.41.21.0/24
origin:         AS45753
descr:          HostCrest Limited 26/F, Billion Plaza,
mnt-by:         MAINT-HOSTCREST-HK
last-modified:  2021-11-08T07:07:00Z
source:         APNIC

route:          175.41.21.0/24
origin:         AS9744
descr:          HostCrest Limited 26/F, Billion Plaza,
mnt-by:         MAINT-HOSTCREST-HK
last-modified:  2021-10-19T05:08:55Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 175.41.0.0/16

Range	ASN	Company	Num of IPs
175.41.192.0/18	AS16509	11F Shibuya Cross Tower	16,384
175.41.64.0/18	AS4721	JCOM Co., Ltd.	16,384
175.41.128.0/18	AS16509	Bedok Central Post Office PO Box 482	16,384
175.41.64.0/19	AS4721	Jupiter Telecommunications Co., Ltd.	8,192
175.41.48.0/20	AS9505	International Business Group,	4,096
175.41.32.0/21	AS10001	Mics Network Corporation	2,048
175.41.44.0/22	AS58717	Summit Communications Limited	1,024
175.41.40.0/22	AS55803	Hostopia Australia Web Pty Ltd	1,024
175.41.31.0/24	AS45753	Netsec	256
175.41.44.0/24	AS58717	Summit Comm. Limited	256
175.41.45.0/24	AS58717	SComm	256
175.41.46.0/24	AS58717	SComm	256
175.41.47.0/24	AS58717	SComm	256
175.41.48.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.49.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.50.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.51.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.52.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.54.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.55.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.56.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.57.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.58.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.61.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.62.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.63.0/24	AS9505	Chunghwa Telecom Co.,Ltd.	256
175.41.22.0/24	AS963	Netsec	256
175.41.23.0/24	AS963	Netsec	256
175.41.24.0/24	AS963	Netsec	256
175.41.25.0/24	AS963	Netsec	256
175.41.26.0/24	AS963	Netsec	256
175.41.27.0/24	AS963	Netsec	256
175.41.28.0/24	AS963	Netsec	256
175.41.16.0/24	AS45753	Netsec	256
175.41.17.0/24	AS45753	Netsec	256
175.41.18.0/24	AS45753	Netsec	256
175.41.19.0/24	AS45753	Netsec	256
175.41.20.0/24	AS45753	Netsec	256
175.41.29.0/24	AS45753	Netsec	256
175.41.30.0/24	AS45753	Netsec	256

Hosted domains

There are 27 domain names hosted across 9 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
175.41.21.130	btepro.co	10
175.41.21.2	vvot.com	7
175.41.21.13	hambeen.com	3
175.41.21.27	aijianxiang.com	2
175.41.21.11	rpchina.org	1
175.41.21.245	chinaqihua.com	1
175.41.21.229	23hg.com	1
175.41.21.59	nord-lock.cn	1
175.41.21.146	unnriu.com	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

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
4.184.186.72	AS8075 Microsoft Corporation	`0.40ms` from Frankfurt am Main, DE
176.224.19.232	AS35819 Etihad Etisalat, a joint stock company	`4.06ms` from Jeddah, SA
202.144.196.184	AS396982 Google LLC	`0.07ms` from Melbourne, AU
80.210.98.248	AS30848 UNIDATA S.p.A.	`1.48ms` from Milan, IT
159.108.77.232	AS2024 Eversource Energy	`4.62ms` from New York City, US
108.82.46.120	AS7018 AT&T Enterprises, LLC	`9.80ms` from Redding, US
71.204.130.216	AS7922 Comcast Cable Communications, LLC	`8.53ms` from San Jose, US
14.5.181.136	AS17858 LG POWERCOMM	`1.75ms` from Seoul, KR
43.134.129.40	AS132203 Tencent Building, Kejizhongyi Avenue	`0.65ms` from Singapore, SG
171.121.239.200	AS4837 CHINA UNICOM China169 Backbone	`9.39ms` from Taiyuan, CN
113.225.16.72	AS4837 CHINA UNICOM China169 Backbone	`2.32ms` from Tieling, CN
46.5.60.200	AS3209 Vodafone GmbH	`10.72ms` from Frankfurt am Main, DE
154.213.135.184	AS132839 POWER LINE DATACENTER	`1.14ms` from Hong Kong, HK
95.172.185.104	AS15457 NOS Madeira Comunicacoes, S.A.	`17.32ms` from Lisbon, PT
81.151.252.232	AS2856 British Telecommunications PLC	`2.02ms` from London, GB
69.180.81.56	AS7922 Comcast Cable Communications, LLC	`8.97ms` from Orlando, US
124.97.52.88	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.52ms` from Osaka, JP
100.16.58.152	AS701 Verizon Business	`4.58ms` from Philadelphia, US
168.81.251.216	AS132335 LEAPSWITCH NETWORKS PRIVATE LIMITED	`0.19ms` from Pune, IN
178.65.120.168	AS12389 PJSC Rostelecom	`1.23ms` from Saint Petersburg, RU
177.200.41.248	AS266539 LINQ TELECOMUNICACOES	`13.89ms` from Sao Paulo, BR
187.106.191.72	AS28573 Claro NXT Telecomunicacoes Ltda	`6.11ms` from Sao Paulo, BR
125.149.188.184	AS4766 Korea Telecom	`1.31ms` from Seoul, KR
136.109.40.136	AS396982 Google LLC	`0.19ms` from The Dalles, US
124.70.11.56	AS55990 Huawei Cloud Service data center	`3.56ms` from Tianjin, CN

Traceroute

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

traceroute -a -n -q1 -m7 175.41.21.32

traceroute to 175.41.21.32 (175.41.21.32): 7 hops max, 52 byte packets

1 [AS15169] 108.170.231.40 1.859 ms

2 *

3 *

4 [AS3491] 63.222.112.9 133.908 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Dallas, US

On January 30th 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.

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