45.121.192.0/24

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:        45.121.192.0 - 45.121.192.255
netname:        UDOMAIN-HK
descr:          UDomain Web Hosting Company Ltd
country:        HK
admin-c:        UA32-AP
tech-c:         UA32-AP
abuse-c:        AU97-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-HK-UDOMAIN
mnt-irt:        IRT-UDOMAIN-HK
last-modified:  2021-06-22T13:22:50Z
source:         APNIC

irt:            IRT-UDOMAIN-HK
address:        18/F, Kinox Centre, 9 Hung To Road, Hong Kong
address:        Hong Kong
e-mail:         report_abuse@udomain.hk
abuse-mailbox:  report_abuse@udomain.hk
admin-c:        UA32-AP
tech-c:         UA32-AP
auth:           # Filtered
remarks:        report_abuse@udomain.hk was validated on 2025-09-09
mnt-by:         MAINT-HK-UDOMAIN
last-modified:  2025-11-18T00:27:27Z
source:         APNIC

role:           ABUSE UDOMAINHK
country:        ZZ
address:        18/F, Kinox Centre, 9 Hung To Road, Hong Kong
address:        Hong Kong
phone:          +000000000
e-mail:         report_abuse@udomain.hk
admin-c:        UA32-AP
tech-c:         UA32-AP
nic-hdl:        AU97-AP
remarks:        Generated from irt object IRT-UDOMAIN-HK
remarks:        report_abuse@udomain.hk was validated on 2025-09-09
abuse-mailbox:  report_abuse@udomain.hk
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-09T04:13:00Z
source:         APNIC

role:           UDOMAIN 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:        UN22-AP
tech-c:         UN22-AP
nic-hdl:        UA32-AP
mnt-by:         MAINT-HK-UDOMAIN
last-modified:  2017-10-16T08:26:03Z
source:         APNIC

route:          45.121.192.0/24
origin:         AS23881
descr:          UDomain Web Hosting Company Limited Unit A-D, 6th Floor, Wing Cheung Industrial Building, No. 109 How Ming Street, Kwun Tong, Kowloon.
mnt-by:         MAINT-HK-UDOMAIN
last-modified:  2018-10-08T07:07:33Z
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
45.121.194.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.196.0/24	AS23881	UDomain Web Hosting Company Ltd	256
45.121.197.0/24	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 no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
45.121.192.10	AS23881 UDomain Web Hosting Company Ltd	`0.71ms` 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
181.83.227.56	AS7303 Telecom Argentina S.A.	`10.37ms` from Buenos Aires, AR
98.34.71.184	AS7922 Comcast Cable Communications, LLC	`4.27ms` from Chicago, US
57.129.71.120	AS16276 OVH SAS	`0.12ms` from Frankfurt am Main, DE
176.147.38.216	AS5410 Bouygues Telecom SA	`6.53ms` from Marseille, FR
176.166.57.168	AS5410 Bouygues Telecom SA	`7.24ms` from Marseille, FR
3.96.158.200	AS16509 Amazon.com, Inc.	`0.17ms` from Montreal, CA
24.168.2.8	AS12271 Charter Communications Inc	`1.72ms` from New York City, US
60.176.142.104	AS4134 CHINANET-BACKBONE	`3.67ms` from Ningbo, CN
88.92.114.248	AS2119 Telenor Norge AS	`10.71ms` from Oslo, NO
119.83.138.232	AS10010 TOKAI Communications Corporation	`2.95ms` from Tokyo, JP
123.15.90.104	AS4837 CHINA UNICOM China169 Backbone	`4.18ms` from Zhengzhou, CN
75.216.65.136	AS6167 Verizon Business	`11.54ms` from Boston, US
65.27.20.120	AS10796 Charter Communications Inc	`9.21ms` from Columbus, US
98.250.244.120	AS7922 Comcast Cable Communications, LLC	`8.09ms` from Flint, US
73.202.73.24	AS7922 Comcast Cable Communications, LLC	`6.71ms` from Fremont, US
14.157.92.24	AS4134 CHINANET-BACKBONE	`3.06ms` from Guangzhou, CN
212.6.81.8	AS9145 EWE TEL GmbH	`2.98ms` from Hamburg, DE
47.242.58.40	AS45102 Alibaba (US) Technology Co., Ltd.	`0.83ms` from Hong Kong, HK
123.232.202.120	AS4837 CHINA UNICOM China169 Backbone	`3.71ms` from Jinan, CN
204.1.102.40	AS2914 NTT America, Inc.	`0.25ms` from Los Angeles, US
212.6.41.248	AS207498 Expert Mark GmbH	`0.26ms` from Luxembourg, LU
190.134.81.152	AS6057 Administracion Nacional de Telecomunicaciones	`1.74ms` from Montevideo, UY
159.203.88.72	AS14061 DigitalOcean, LLC	`0.34ms` from New York City, US
149.18.191.24	AS64286 LogicWeb Inc.	`1.62ms` from New York City, US
95.53.136.8	AS12389 PJSC Rostelecom	`11.10ms` from Saint Petersburg, RU

Traceroute

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

traceroute -a -n -q1 -f5 45.121.192.1

traceroute to 45.121.192.1 (45.121.192.1): 64 hops max, 52 byte packets

5 [AS3491] 63.222.89.45 0.692 ms

6 [AS3491] 63.218.126.42 188.641 ms

7 [AS3491] 63.222.116.3 185.747 ms

8 *

9 *

10 *

11 [AS23881] 45.121.192.1 187.186 ms

Measurement taken from

IPinfo ProbeNet in Santiago de Queretaro, MX

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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