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
105.107.103.168	AS36947 Telecom Algeria	`12.55ms` from Algiers, DZ
5.54.6.8	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`1.04ms` from Athens, GR
203.209.57.104	AS7693 KSC Commercial Internet Co. Ltd.	`1.50ms` from Bangkok, TH
35.86.69.248	AS16509 Amazon.com, Inc.	`0.56ms` from Boardman, US
205.142.199.232	AS17089 Cincinnati Children's Hospital Medical Center	`1.65ms` from Cincinnati, US
185.45.48.200	AS47292 Sentia Denmark A/S	`0.47ms` from Copenhagen, DK
34.251.162.216	AS16509 Amazon.com, Inc.	`0.27ms` from Dublin, IE
27.42.75.24	AS17816 China Unicom IP network China169 Guangdong province	`6.35ms` from Guangzhou, CN
77.3.16.232	AS6805 Telefonica Germany GmbH & Co.OHG	`1.07ms` from Hamburg, DE
69.233.73.88	AS7018 AT&T Enterprises, LLC	`1.71ms` from Los Angeles, US
95.126.248.24	AS3352 TELEFONICA DE ESPANA S.A.U.	`16.56ms` from Madrid, ES
12.111.60.120	AS27271 United Rentals (North America), Inc.	`4.69ms` from New York City, US
65.32.79.152	AS33363 Charter Communications, Inc	`5.27ms` from Orlando, US
116.94.35.168	AS7679 QTnet,Inc.	`8.39ms` from Osaka, JP
52.67.118.216	AS16509 Amazon.com, Inc.	`0.13ms` from Osasco, BR
185.245.137.216	AS204599 OODRIVE SAS	`1.44ms` from Paris, FR
188.53.181.216	AS25019 Saudi Telecom Company JSC	`2.18ms` from Riyadh, SA
80.23.242.8	AS3269 Telecom Italia S.p.A.	`1.75ms` from Rome, IT
178.229.173.88	AS31615 Odido Netherlands B.V.	`13.07ms` from Amsterdam, NL
23.239.185.136	AS396319 Oxylabs	`0.39ms` from Ashburn, US
162.241.130.120	AS19871 Network Solutions, LLC	`0.34ms` from Atlanta, US
95.249.166.88	AS3269 Telecom Italia S.p.A.	`5.45ms` from Milan, IT
201.152.96.104	AS8151 UNINET	`7.33ms` from Monterrey, MX
125.4.9.120	AS9617 JCOM Co., Ltd.	`10.06ms` from Osaka, JP
58.140.246.24	AS10036 DLIVE	`1.15ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -f3 -m7 45.121.203.19

traceroute to 45.121.203.19 (45.121.203.19): 7 hops max, 52 byte packets

3 [AS9002] 87.245.233.113 147.146 ms

4 [AS9002] 87.245.241.17 163.688 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Kyiv, UA

On January 18th 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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