45.121.197.0/24

AS23881 · UDomain Web Hosting Company Ltd

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Summary

Country	Hong Kong
Domain	udomain.hk
ASN	AS23881
Registry	APNIC
ID	UDOMAIN-HK

WHOIS Details

inetnum:        45.121.197.0 - 45.121.197.255
netname:        UDOMAIN-HK
descr:          UDomain Web Hosting Company Ltd
country:        HK
admin-c:        NA725-AP
tech-c:         NA725-AP
abuse-c:        AU303-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-HK-WEBHOST
mnt-irt:        IRT-UDOMAIN-HK2
last-modified:  2022-01-05T13:14:18Z
source:         APNIC

irt:            IRT-UDOMAIN-HK2
address:        Unit A - D, 6th Floor,Wing Cheung Industrial Building, No. 109 How Ming Street, Kwun Tong, Kowloon.
e-mail:         support@udomain.com.hk
abuse-mailbox:  support@udomain.com.hk
admin-c:        NA725-AP
tech-c:         NA725-AP
auth:           # Filtered
remarks:        support@udomain.com.hk is invalid
mnt-by:         MAINT-HK-WEBHOST
last-modified:  2025-11-18T00:30:25Z
source:         APNIC

role:           ABUSE UDOMAINHK2
country:        ZZ
address:        Unit A - D, 6th Floor,Wing Cheung Industrial Building, No. 109 How Ming Street, Kwun Tong, Kowloon.
phone:          +000000000
e-mail:         support@udomain.com.hk
admin-c:        NA725-AP
tech-c:         NA725-AP
nic-hdl:        AU303-AP
remarks:        Generated from irt object IRT-UDOMAIN-HK2
remarks:        support@udomain.com.hk is invalid
abuse-mailbox:  support@udomain.com.hk
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-22T22:58:58Z
source:         APNIC

role:           Network Administrators
address:        Unit A - D, 6th Floor, Wing Cheung Industrial Building, No. 109 How Ming Street, Kwun Tong, Kowloon
country:        HK
phone:          +852 2554 7545
e-mail:         noc@udomain.hk
admin-c:        NO139-AP
tech-c:         NO139-AP
nic-hdl:        NA725-AP
mnt-by:         MAINT-HK-WEBHOST
last-modified:  2019-06-17T09:55:57Z
source:         APNIC

route:          45.121.197.0/24
origin:         AS23881
descr:          Web Host Ltd Unit A-D, 6th Floor, Wing Cheung Industrial Building, No. 109 How Ming Street, Kwun Tong, Kowloon.
mnt-by:         MAINT-HK-WEBHOST
last-modified:  2019-07-15T04:04:27Z
source:         APNIC

Nearby Ranges

BGP prefixes that overlap with 45.121.0.0/16

Range	ASN	Company	Num of IPs
45.121.80.0/22	AS153494	UNIT 04 7/F BRIGHT WAY TOWER	1,024
45.121.84.0/22	AS18106	Viewqwest Pte Ltd	1,024
45.121.132.0/22	AS1851	Adelaide University	1,024
45.121.32.0/22	AS136908	Sky Broadband Pvt. Ltd	1,024
45.121.0.0/22	AS24186	RailTel Corporation is an Internet Service Provider.	1,024
45.121.148.0/22	AS2516	Mainz, LLC	1,024
45.121.48.0/22	AS31972	Xiang Ao Communications Co. Ltd.	1,024
45.121.36.0/22	AS45960	YTL Broadband Sdn. Bhd.	1,024
45.121.24.0/22	AS131429	Mobifone Corporation	1,024
45.121.236.0/22	AS132590	AKCTV Pte. Ltd.	1,024
45.121.160.0/22	AS56149	INCOM Company	1,024
45.121.20.0/22	AS56231	MEASAT Broadcast Network Systems Sdn. Bhd.	1,024
45.121.108.0/22	AS135214	THE SPEEDNET	1,024
45.121.56.0/22	AS153494	UNIT 17, 9TH FL OF TOWER A New,	1,024
45.121.104.0/22	AS12975	Palestine Telecommunications Company (PALTEL)	1,024
45.121.201.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.203.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.52.0/24	AS4847	Beijing Guanghuan newsletter network communication technology limited liability company	256
45.121.55.0/24	AS4847	Beijing Guanghuan newsletter network communication technology limited liability company	256
45.121.212.0/24	AS62610	Graha Telkomsigma	256
45.121.213.0/24	AS62610	Menara AIMS, Changkat Raja Chulan, 50200 Kuala Lumpur, Malaysia	256
45.121.214.0/24	AS62610	StarkenburgstraÃŸe 12, 64546 MÃ¶rfelden, Germany	256
45.121.33.0/24	AS136908	Sky Broadband Pvt. Ltd.	256
45.121.34.0/24	AS136908	Sky Broadband Pvt. Ltd.	256
45.121.35.0/24	AS136908	Sky Broadband Pvt. Ltd.	256
45.121.208.0/24	AS137409	Streamline Servers Ltd - Perth	256
45.121.209.0/24	AS137409	Streamline Servers Ltd - Melbourne	256
45.121.210.0/24	AS137409	Streamline Servers Ltd - Sydney	256
45.121.211.0/24	AS137409	Streamline Servers Ltd - Sydney	256
45.121.192.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.194.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.196.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.198.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.199.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.200.0/24	AS23881	UDomain Web Hosting Company Ltd	256

Hosted domains

There are 1,712 domain names hosted across 45 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
45.121.197.59	ahwp.info	560
45.121.197.60	ahwp.info	543
45.121.197.113	mayflash.com	247
45.121.197.114	mayflash.com	237
45.121.197.112	utopia.org.hk	52
45.121.197.111	superobikes.com	52
45.121.197.105	i-more.com.hk	50
45.121.197.43	jinjianfeng.hk	47
45.121.197.106	i-more.com.hk	46
45.121.197.109	reddot-hk.com	44
45.121.197.104	cmma.org.hk	43
45.121.197.110	shek-cpa.com	42
45.121.197.103	evergreentoys.com.hk	41
45.121.197.102	bau.org.hk	40
45.121.197.108	mandahk.com	38
45.121.197.101	boppfilm.com	38
45.121.197.58	wingkei.com.hk	38
45.121.197.37	dynacome.site	37
45.121.197.56	tplighting.hk	37
45.121.197.51	qantas-hk.com	37

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

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

IP Address	ASN	Details
45.121.197.97	AS23881 UDomain Web Hosting Company Ltd	`0.57ms` 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
120.6.62.24	AS4837 CHINA UNICOM China169 Backbone	`10.30ms` from Beijing, CN
44.246.178.104	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
73.110.114.120	AS7922 Comcast Cable Communications, LLC	`5.32ms` from Chicago, US
23.3.48.168	AS16625 Akamai Technologies, Inc.	`0.09ms` from Fortaleza, BR
114.204.11.248	AS9318 SK Broadband Co Ltd	`1.52ms` from Incheon, KR
185.205.20.72	AS204734 Hvaler kommune	`2.16ms` from Oslo, NO
52.20.35.120	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
54.37.80.56	AS16276 OVH SAS	`0.07ms` from Roubaix, FR
89.9.246.8	AS12929 Telia Norge AS	`1.86ms` from Sandefjord, NO
67.195.47.8	AS36647 Yahoo Holdings Inc.	`4.01ms` from Seattle, US
118.86.146.72	AS4721 JCOM Co., Ltd.	`8.36ms` from Tokyo, JP
81.205.100.56	AS1136 KPN B.V.	`2.50ms` from Amsterdam, NL
40.176.242.104	AS16509 Amazon.com, Inc.	`1.70ms` from Calgary, CA
65.69.171.232	AS7018 AT&T Enterprises, LLC	`1.40ms` from Kansas City, US
86.171.186.184	AS2856 British Telecommunications PLC	`6.26ms` from London, GB
97.228.89.88	AS6167 Verizon Business	`12.22ms` from Los Angeles, US
90.241.200.216	AS5378 Vodafone Limited	`2.02ms` from Manchester, GB
68.173.182.24	AS12271 Charter Communications Inc	`3.69ms` from New York City, US
125.11.125.136	AS9824 JCOM Co., Ltd.	`11.28ms` from Osaka, JP
179.53.156.24	AS6400 Compañía Dominicana de Teléfonos S. A.	`5.54ms` from Santo Domingo, DO
163.18.74.232	AS1659 Taiwan Academic Network (TANet) Information Center	`3.74ms` from Taichung, TW
78.88.58.168	AS29314 VECTRA S.A.	`11.30ms` from Warsaw, PL
92.104.21.40	AS3303 Swisscom (Switzerland) Ltd	`1.45ms` from Zuerich, CH
52.219.107.24	AS16509 Amazon.com, Inc.	`0.93ms` from Columbus, US
74.249.244.120	AS8075 Microsoft Corporation	`0.19ms` from Des Moines, US

Traceroute

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

traceroute -a -n -q1 -f6 45.121.197.84

traceroute to 45.121.197.84 (45.121.197.84): 64 hops max, 52 byte packets

6 [AS23881] 45.121.197.84 2.674 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On February 7th 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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