175.41.21.0/24

AS963 · N963 PTE. LTD.

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

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.net	10
175.41.21.2	hzeq.com	7
175.41.21.13	hambeen.com	3
175.41.21.27	aijianxiang.com	2
175.41.21.245	chinaqihua.com	1
175.41.21.146	unnriu.com	1
175.41.21.229	23hg.com	1
175.41.21.11	rpchina.org	1
175.41.21.59	nord-lock.cn	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

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

IP Address	ASN	Details
175.41.21.1	AS963 N963 PTE. LTD.	`0.95ms` from Tokyo, JP

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
172.177.16.56	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
86.128.101.136	AS2856 British Telecommunications PLC	`4.68ms` from Erith, GB
46.5.60.200	AS3209 Vodafone GmbH	`11.01ms` from Frankfurt am Main, DE
220.198.84.24	AS17816 China Unicom IP network China169 Guangdong province	`6.40ms` from Guangzhou, CN
59.41.48.168	AS4134 CHINANET-BACKBONE	`2.26ms` from Guangzhou, CN
151.71.244.40	AS1267 WIND TRE S.P.A.	`6.32ms` from Milan, IT
34.12.130.120	AS396982 Google LLC	`0.15ms` from Oudeschip, NL
15.236.157.248	AS16509 Amazon.com, Inc.	`0.14ms` from Paris, FR
24.44.110.248	AS6128 Cablevision Systems Corp.	`4.61ms` from Piscataway, US
45.4.32.120	AS266044 Nicnet S.A.	`4.86ms` from Sao Paulo, BR
5.104.169.88	AS57344 Telehouse EAD	`8.06ms` from Sofia, BG
2.206.79.104	AS3209 Vodafone GmbH	`5.31ms` from Hamburg, DE
173.248.249.136	AS132585 SkyExchange Internet Access	`1.19ms` from Hong Kong, HK
105.213.188.200	AS16637 MTN SA	`3.31ms` from Johannesburg, ZA
185.76.37.8	AS8075 Microsoft Corporation	`0.66ms` from London, GB
90.166.221.184	AS12479 Orange Espagne SA	`11.70ms` from Madrid, ES
111.105.50.120	AS2516 KDDI CORPORATION	`5.08ms` from Osaka, JP
112.246.176.72	AS4837 CHINA UNICOM China169 Backbone	`6.69ms` from Qingdao, CN
178.86.174.88	AS25019 Saudi Telecom Company JSC	`3.06ms` from Riyadh, SA
134.79.237.216	AS3671 SLAC National Accelerator Laboratory	`1.36ms` from San Jose, US
49.235.119.168	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.49ms` from Shanghai, CN
120.154.104.88	AS1221 Telstra Limited	`1.73ms` from Sydney, AU
223.236.115.72	AS24560 Bharti Airtel Ltd., Telemedia Services	`3.27ms` from Ahmedabad, IN
54.69.52.216	AS16509 Amazon.com, Inc.	`0.16ms` from Boardman, US
75.24.121.136	AS7018 AT&T Enterprises, LLC	`2.98ms` from Dallas, US

Traceroute

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

traceroute -a -n -q1 175.41.21.1

traceroute to 175.41.21.1 (175.41.21.1): 64 hops max, 52 byte packets

1 [AS202422] 202.78.167.1 0.109 ms

2 [AS199524] 92.223.63.81 0.109 ms

3 *

4 [] 101.203.90.170 0.413 ms

5 [AS963] 175.41.21.1 1.031 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On February 16th 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