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 1,708 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	554
45.121.197.60	ahwp.info	533
45.121.197.113	mayflash.com	250
45.121.197.114	mayflash.com	237
45.121.197.111	unleashingmind.hk	53
45.121.197.112	walloncotton.com	53
45.121.197.105	i-more.com.hk	50
45.121.197.43	i-concept-event.com	47
45.121.197.106	i-more.com.hk	46
45.121.197.109	shek-cpa.com	44
45.121.197.104	dearbell.com	44
45.121.197.103	classicalguitar.com.hk	42
45.121.197.110	pandb.com.hk	42
45.121.197.102	cata.hk	41
45.121.197.58	xn--ukvs29c.hk	39
45.121.197.38	ddslogistics.hk	38
45.121.197.101	xn--5lws10f27f.xn--55qx5d.xn--j6w193g	38
45.121.197.108	mustardseed.com.hk	38
45.121.197.55	tplighting.hk	37
45.121.197.51	roc-ent.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
45.121.197.102	AS23881 UDomain Web Hosting Company Ltd	`0.59ms` 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
20.82.221.184	AS8075 Microsoft Corporation	`0.14ms` from Dublin, IE
18.156.84.24	AS16509 Amazon.com, Inc.	`0.17ms` from Frankfurt am Main, DE
93.230.236.248	AS3320 Deutsche Telekom AG	`5.27ms` from Hamburg, DE
82.215.207.88	AS719 Elisa Oyj	`8.11ms` from Helsinki, FI
201.234.114.8	AS3549 Level 3 Parent, LLC	`0.14ms` from Lima, PE
66.175.38.248	AS30447 Internet Names For Business Inc.	`0.78ms` from Miami, US
13.202.128.184	AS16509 Amazon.com, Inc.	`0.13ms` from Mumbai, IN
185.34.163.120	AS216050 Lietparkas UAB	`0.35ms` from New York City, US
101.142.39.120	AS17511 OPTAGE Inc.	`3.76ms` from Osaka, JP
118.53.117.184	AS4766 Korea Telecom	`2.23ms` from Seoul, KR
36.77.113.56	AS7713 PT Telekomunikasi Indonesia	`10.52ms` from Singapore, SG
38.225.137.152	AS174 Cogent Communications, LLC	`0.34ms` from Sofia, BG
176.74.99.8	AS34797 System Net Ltd	`0.67ms` from Tbilisi, GE
83.13.16.40	AS5617 Orange Polska Spolka Akcyjna	`6.79ms` from Wrocław, PL
101.201.247.248	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.53ms` from Beijing, CN
136.183.197.136	AS19933 Buffalo State College	`2.87ms` from Buffalo, US
14.245.30.8	AS45899 VNPT Corp	`7.23ms` from Da Nang, VN
115.126.29.232	AS38186 Forewin Telecom Group Limited, ISP at HK	`1.55ms` from Hong Kong, HK
47.196.198.136	AS5650 Frontier Communications of America, Inc.	`6.78ms` from Miami, US
173.28.123.168	AS30036 Mediacom Communications Corp	`7.41ms` from Phoenix, US
31.191.210.200	AS1267 WIND TRE S.P.A.	`3.97ms` from Rome, IT
193.204.167.248	AS137 Consortium GARR	`0.55ms` from Rome, IT
62.0.68.232	AS1680 Cellcom Fixed Line Communication L.P	`1.42ms` from Rosh Ha‘Ayin, IL
54.219.89.200	AS16509 Amazon.com, Inc.	`0.15ms` from San Jose, US
77.110.40.200	AS3301 Telia Company AB	`4.05ms` from Copenhagen, DK

Traceroute

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

traceroute -a -n -q1 -f4 45.121.197.117

traceroute to 45.121.197.117 (45.121.197.117): 64 hops max, 52 byte packets

4 [AS395954] 172.255.243.1 5.42 ms

5 *

6 *

7 *

8 *

9 [AS1299] 62.115.178.103 248.946 ms

10 *

11 *

12 *

13 *

14 [AS23881] 45.121.197.117 174.126 ms

Measurement taken from

IPinfo ProbeNet in Bologna, IT

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.

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