45.121.203.0/24

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:        45.121.203.0 - 45.121.203.255
netname:        UDOMAIN-HK
descr:          UDomain Web Hosting Company Ltd
country:        HK
admin-c:        NA724-AP
tech-c:         NA724-AP
abuse-c:        AU302-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-NEWSKY-AP
mnt-irt:        IRT-UDOMAIN-HK1
last-modified:  2022-01-05T13:14:16Z
source:         APNIC

irt:            IRT-UDOMAIN-HK1
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:        NA724-AP
tech-c:         NA724-AP
auth:           # Filtered
remarks:        support@udomain.com.hk is invalid
mnt-by:         MAINT-NEWSKY-AP
last-modified:  2025-11-18T00:30:25Z
source:         APNIC

role:           ABUSE UDOMAINHK1
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:        NA724-AP
tech-c:         NA724-AP
nic-hdl:        AU302-AP
remarks:        Generated from irt object IRT-UDOMAIN-HK1
remarks:        support@udomain.com.hk is invalid
abuse-mailbox:  support@udomain.com.hk
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-22T22:58:59Z
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:        NO138-AP
tech-c:         NO138-AP
nic-hdl:        NA724-AP
mnt-by:         MAINT-NEWSKY-AP
last-modified:  2019-06-17T09:29:05Z
source:         APNIC

route:          45.121.203.0/24
origin:         AS23881
descr:          New Sky Internet Limited Unit A-D, 6th Floor, Wing Cheung Industrial Building, No. 109 How Ming Street,
mnt-by:         MAINT-NEWSKY-AP
last-modified:  2019-07-15T04:12:23Z
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
45.121.52.0/24	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
45.121.197.0/24	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

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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
5.54.6.8	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`1.08ms` from Athens, GR
99.16.248.120	AS7018 AT&T Enterprises, LLC	`3.53ms` from Atlanta, US
173.23.3.104	AS30036 Mediacom Communications Corp	`12.01ms` from Chicago, US
79.199.97.8	AS3320 Deutsche Telekom AG	`5.61ms` from Frankfurt am Main, DE
89.56.212.56	AS207790 SWN Stadtwerke Neumuenster GmbH	`2.12ms` from Hamburg, DE
84.139.42.168	AS3320 Deutsche Telekom AG	`4.49ms` from Hamburg, DE
46.189.227.216	AS12353 Vodafone Portugal	`2.56ms` from Lisbon, PT
151.40.21.136	AS1267 WIND TRE S.P.A.	`8.45ms` from Milan, IT
89.208.50.56	AS12695 LLC Digital Network	`0.38ms` from Moscow, RU
178.186.87.152	AS12389 PJSC Rostelecom	`5.81ms` from Novosibirsk, RU
76.106.161.120	AS7922 Comcast Cable Communications, LLC	`4.27ms` from Orlando, US
51.159.32.136	AS12876 SCALEWAY S.A.S.	`0.60ms` from Paris, FR
209.188.147.24	AS2152 CENIC	`2.72ms` from San Jose, US
121.170.204.88	AS4766 Korea Telecom	`0.69ms` from Seoul, KR
111.231.104.152	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.04ms` from Shanghai, CN
52.63.166.72	AS16509 Amazon.com, Inc.	`0.11ms` from Sydney, AU
118.103.97.40	AS17676 SoftBank Corp.	`0.64ms` from Tokyo, JP
207.148.91.232	AS20473 The Constant Company, LLC	`0.18ms` from Tokyo, JP
105.159.111.248	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`3.10ms` from Casablanca, MA
162.14.117.120	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.77ms` from Chengdu, CN
74.78.3.8	AS11351 Charter Communications Inc	`18.39ms` from Chicago, US
96.179.89.104	AS36377 Comcast Cable Communications, LLC	`0.88ms` from Chicago, US
71.228.242.72	AS7922 Comcast Cable Communications, LLC	`6.36ms` from Murfreesboro, US
207.59.141.136	AS7029 Windstream Communications LLC	`3.28ms` from New York City, US
46.233.252.232	AS47165 Omskie kabelnye seti Ltd.	`7.88ms` from Novosibirsk, 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 -m9 45.121.203.212

traceroute to 45.121.203.212 (45.121.203.212): 9 hops max, 52 byte packets

5 [AS3855] 198.207.21.200 329.226 ms

6 [AS3855] 198.207.21.5 18.829 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Hamilton, BM

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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