45.121.199.0/24

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:        45.121.199.0 - 45.121.199.255
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:  2022-01-05T13:14:17Z
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:  2025-08-22T22:56:41Z
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:          45.121.199.0/24
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:  2019-07-15T04:08:58Z
source:         APNIC

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
45.121.199.67	AS23881 UDomain Web Hosting Company Ltd	`1.47ms` 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
2.132.118.152	AS9198 JSC Kazakhtelecom	`2.01ms` from Almaty, KZ
152.201.218.168	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`3.27ms` from Bogota, CO
34.77.249.184	AS396982 Google LLC	`0.15ms` from Brussels, BE
196.115.174.24	AS36925 MEDITELECOM	`3.27ms` from Casablanca, MA
107.211.98.248	AS7018 AT&T Enterprises, LLC	`15.45ms` from Chicago, US
107.0.130.152	AS7922 Comcast Cable Communications, LLC	`1.45ms` from Chicago, US
87.32.41.104	AS1213 HEAnet CLG	`1.34ms` from Dublin, IE
217.85.230.232	AS3320 Deutsche Telekom AG	`5.67ms` from Frankfurt am Main, DE
77.179.191.72	AS6805 Telefonica Germany GmbH & Co.OHG	`3.23ms` from Frankfurt am Main, DE
147.81.181.40	AS36149 Hawaiian Telcom Services Company, Inc.	`7.13ms` from Honolulu, US
122.142.74.136	AS4837 CHINA UNICOM China169 Backbone	`14.37ms` from Liaoyang, CN
94.8.50.152	AS5607 Sky UK Limited	`13.12ms` from London, GB
151.16.184.248	AS1267 WIND TRE S.P.A.	`5.11ms` from Milan, IT
122.252.78.152	AS18318 LG HelloVision Corp.	`10.51ms` from Seoul, KR
85.253.201.120	AS2586 Elisa Eesti AS	`2.36ms` from Tallinn, EE
46.75.110.248	AS8447 A1 Telekom Austria AG	`12.74ms` from Vienna, AT
83.13.18.40	AS5617 Orange Polska Spolka Akcyjna	`6.10ms` from Warsaw, PL
73.82.253.56	AS7922 Comcast Cable Communications, LLC	`6.37ms` from Atlanta, US
52.80.107.40	AS55960 Beijing Guanghuan Xinwang Digital	`3.53ms` from Beijing, CN
152.202.79.216	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`3.47ms` from Bogota, CO
84.187.16.72	AS3320 Deutsche Telekom AG	`2.92ms` from Frankfurt am Main, DE
86.6.6.216	AS5089 Virgin Media Limited	`10.80ms` from London, GB
98.148.35.88	AS20001 Charter Communications Inc	`6.96ms` from Los Angeles, US
91.149.132.232	AS42772 Unitary enterprise A1	`0.51ms` from Minsk, BY
3.224.93.24	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US

Traceroute

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

traceroute -a -n -q1 -f5 45.121.199.34

traceroute to 45.121.199.34 (45.121.199.34): 64 hops max, 52 byte packets

5 [] 27.111.229.147 33.743 ms

6 *

7 *

8 *

9 [AS23881] 45.121.199.34 36.138 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On August 28th 2025

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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