172.81.100.0/24

AS140227 · Hong Kong Communications International Co., Limited

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Summary

Country	Hong Kong
Domain	udc.hk
ASN	AS140227
Parent Range	172.81.100.0/23
Registry	ARIN
ID	UDC

WHOIS Details

NetHandle:      NET-172-81-100-0-1
OrgID:          C10485173
Parent:         NET-172-81-96-0-1
NetName:        UDC
NetRange:       172.81.100.0 - 172.81.101.255
NetType:        reassignment
RegDate:        2023-11-30
Updated:        2023-11-30
Source:         ARIN


OrgID:          C10485173
OrgName:        Hong Kong Communications International Co., Limited
CanAllocate:    
Street:         FLAT B, 23/F, TOWER 2, 873 LAI CHI KOK ROAD, ONE WEST KOWLOON, CHEUNG SHA WAN
City:           KOWLOON
State/Prov:     
Country:        HK
PostalCode:     
RegDate:        2023-11-30
Updated:        2023-11-30
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 172.81.100.0/24

Range	ASN	Company	Num of IPs
172.81.100.0/23	AS140227	Hong Kong Communications International Co., Limited	512

Nearby Ranges

BGP prefixes that overlap with 172.81.0.0/16

Range	ASN	Company	Num of IPs
172.81.192.0/18	AS45090	Tencent Cloud Computing (Beijing) Co., Ltd	16,384
172.81.64.0/20	AS32592	Uniti Fiber Holdings Inc.	4,096
172.81.160.0/20	AS14265	TPx Communications	4,096
172.81.64.0/20	AS13760	Uniti Fiber Holdings Inc.	4,096
172.81.120.0/21	AS21859	Zenlayer Inc	2,048
172.81.176.0/21	AS394745	Lunanode Hosting Inc.	2,048
172.81.176.0/21	AS394745	Lunanode Hosting Inc.	2,048
172.81.176.0/21	AS174	Lunanode Hosting Inc.	2,048
172.81.176.0/21	AS174	Lunanode Hosting Inc.	2,048
172.81.16.0/22	AS18519	MTC Technologies	1,024
172.81.24.0/22	AS19528	QUESTHOST.COM, LLC	1,024
172.81.4.0/22	AS30417	BTIG LLC	1,024
172.81.188.0/22	AS32354	Unwired	1,024
172.81.140.0/22	AS36498	Access One Inc.	1,024
172.81.52.0/22	AS396107	Southern Broadband, LLC	1,024
172.81.20.0/22	AS399091	Inter Data Link Inc	1,024
172.81.28.0/22	AS399194	Satronics Satellites Sales and Service	1,024
172.81.32.0/22	AS17303	Netwire	1,024
172.81.116.0/22	AS54641	InMotion Hosting, Inc.	1,024
172.81.152.0/22	AS54858	Wave Broadband	1,024
172.81.148.0/22	AS1097	Sardis Telecom	1,024
172.81.156.0/22	AS14265	TPx Communications	1,024
172.81.100.0/23	AS140227	Hong Kong Communications International Co., Limited	512
172.81.38.0/23	AS397095	Setson LLC	512
172.81.8.0/24	AS7819	Ark Network, Inc.	256
172.81.139.0/24	AS16509	Greenway Health, LLC	256
172.81.144.0/24	AS212238	bvoip	256
172.81.145.0/24	AS212238	bvoip	256
172.81.146.0/24	AS212238	bvoip	256
172.81.147.0/24	AS212238	bvoip	256
172.81.127.0/24	AS21859	ZENLA-1	256
172.81.127.0/24	AS21859	ZENLA-1	256
172.81.128.0/24	AS27176	DataWagon, LLC	256
172.81.129.0/24	AS27176	DataWagon, LLC	256
172.81.131.0/24	AS27176	DataWagon, LLC	256
172.81.134.0/24	AS27176	DataWagon, LLC	256
172.81.135.0/24	AS27176	DataWagon, LLC	256
172.81.4.0/24	AS30417	BTIG LLC	256
172.81.75.0/24	AS36730	Transformyx, Inc.	256
172.81.36.0/24	AS399218	R B & W CORPORATION OF CANADA	256
172.81.57.0/24	AS399275	SOLID-PHOENIX	256
172.81.59.0/24	AS399275	SOLID SYSTEMS LLC	256
172.81.9.0/24	AS46480	Pekin Insurance	256
172.81.127.0/24	AS62610	ZENLA-1	256
172.81.127.0/24	AS62610	ZENLA-1	256
172.81.37.0/24	AS62943	DataTenant, LLC	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

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

IP Address	ASN	Details
172.81.100.255	AS140227 Hong Kong Communications International Co., Limited	`2.05ms` 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
78.140.145.184	AS35415 Webzilla B.V.	`0.36ms` from Amsterdam, NL
46.103.246.72	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`1.33ms` from Athens, GR
109.74.152.72	AS29405 VNET a.s.	`0.55ms` from Bratislava, SK
164.235.3.40	AS27064 United States Department of Defense (DoD)	`11.09ms` from Chicago, US
35.202.212.88	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
80.133.45.104	AS3320 Deutsche Telekom AG	`4.24ms` from Duesseldorf, DE
222.114.164.152	AS4766 Korea Telecom	`3.54ms` from Incheon, KR
213.13.24.72	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`0.77ms` from Lisbon, PT
51.219.253.24	AS31655 Gamma Telecom Holdings Ltd	`15.99ms` from London, GB
76.91.50.200	AS20001 Charter Communications Inc	`4.42ms` from Los Angeles, US
167.253.37.40	AS395793 Arisk Communications inc.	`0.26ms` from Los Angeles, US
92.63.88.24	AS44575 SIA "MWTV"	`0.59ms` from Riga, LV
78.37.185.152	AS12389 PJSC Rostelecom	`1.69ms` from Saint Petersburg, RU
94.19.201.248	AS35807 SkyNet Ltd.	`0.49ms` from Saint Petersburg, RU
125.137.96.184	AS4766 Korea Telecom	`4.74ms` from Seoul, KR
218.230.112.152	AS2516 KDDI CORPORATION	`1.91ms` from Tokyo, JP
71.77.221.8	AS11426 Charter Communications Inc	`5.34ms` from Charlotte, US
175.44.151.152	AS4837 CHINA UNICOM China169 Backbone	`8.74ms` from Fuzhou, CN
125.186.52.184	AS17858 LG POWERCOMM	`1.51ms` from Incheon, KR
182.213.205.232	AS17858 LG POWERCOMM	`2.93ms` from Incheon, KR
23.243.93.168	AS20001 Charter Communications Inc	`3.65ms` from Los Angeles, US
83.61.228.200	AS3352 TELEFONICA DE ESPANA S.A.U.	`1.58ms` from Madrid, ES
54.81.144.248	AS14618 Amazon.com, Inc.	`0.17ms` from Reston, US
82.112.130.168	AS8681 JT (Jersey) Limited	`0.89ms` from Saint Helier, JE
97.215.97.168	AS6167 Verizon Business	`10.62ms` from Santa Clara, US

Traceroute

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

traceroute -a -n -q1 -f3 172.81.100.255

traceroute to 172.81.100.255 (172.81.100.255): 64 hops max, 52 byte packets

3 [AS25369] 217.146.92.10 8.447 ms

4 [AS25369] 5.226.136.9 12.61 ms

5 *

6 [AS3491] 63.218.207.13 9.594 ms

7 [AS3491] 63.223.17.242 273.125 ms

8 *

9 *

10 *

11 *

12 [AS140227] 172.81.100.255 267.509 ms

Measurement taken from

IPinfo ProbeNet in Cambridge, GB

On January 30th 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.

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