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	`2.02ms` 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
170.72.116.184	AS13445 Cisco Webex LLC	`0.92ms` from Amsterdam, NL
45.60.71.136	AS19551 Incapsula Inc	`0.24ms` from Amsterdam, NL
134.166.153.104	AS668 United States Department of Defense (DoD)	`0.58ms` from Atlanta, US
74.215.81.232	AS6181 Cincinnati Bell Telephone Company LLC	`1.30ms` from Cincinnati, US
98.47.225.232	AS7922 Comcast Cable Communications, LLC	`2.78ms` from Fremont, US
120.26.216.40	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`5.86ms` from Hangzhou, CN
75.236.146.120	AS6167 Verizon Business	`12.92ms` from Los Angeles, US
93.240.255.184	AS3320 Deutsche Telekom AG	`0.63ms` from Nuernberg, DE
112.71.249.200	AS17511 OPTAGE Inc.	`1.55ms` from Osaka, JP
118.104.226.104	AS18126 Chubu Telecommunications Company, Inc.	`5.35ms` from Osaka, JP
128.53.188.8	AS2514 NTT PC Communications, Inc.	`2.26ms` from Osaka, JP
79.60.206.232	AS3269 Telecom Italia S.p.A.	`6.53ms` from Rome, IT
86.99.220.232	AS5384 Emirates Internet	`3.85ms` from Al Fujairah City, AE
105.157.188.232	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`5.10ms` from Casablanca, MA
97.118.203.24	AS209 CenturyLink Communications, LLC	`2.52ms` from Denver, US
90.197.59.56	AS5607 Sky UK Limited	`4.34ms` from Erith, GB
116.99.117.120	AS7552 Viettel Group	`15.88ms` from Ho Chi Minh City, VN
58.222.29.248	AS4134 CHINANET-BACKBONE	`5.00ms` from Huai'an, CN
122.42.48.40	AS17858 LG POWERCOMM	`2.17ms` from Incheon, KR
108.157.65.72	AS16509 Amazon.com, Inc.	`1.10ms` from Istanbul, TR
79.200.30.248	AS3320 Deutsche Telekom AG	`9.00ms` from Nuernberg, DE
35.141.86.40	AS33363 Charter Communications, Inc	`5.79ms` from Orlando, US
180.199.57.56	AS18126 Chubu Telecommunications Company, Inc.	`5.20ms` from Osaka, JP
100.52.22.88	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
118.33.238.88	AS4766 Korea Telecom	`2.05ms` 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 -f2 172.81.100.255

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

2 [AS23961] 156.0.200.35 0.139 ms

3 *

4 *

5 [] 193.41.248.53 0.679 ms

6 [] 36.255.57.202 0.362 ms

7 *

8 *

9 [AS140227] 172.81.100.255 6.761 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On January 19th 2026

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