172.81.102.0/24

AS400618 · Prime Security Corp.

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Summary

Country	Hong Kong
Domain	ctcsci.com
ASN	AS400618
Registry	ARIN
ID	CTCSCI

WHOIS Details

NetHandle:      NET-172-81-102-0-1
OrgID:          C10193917
Parent:         NET-172-81-96-0-1
NetName:        CTCSCI
NetRange:       172.81.102.0 - 172.81.103.255
NetType:        reassignment
RegDate:        2023-09-25
Updated:        2023-11-30
Source:         ARIN


OrgID:          C10193917
OrgName:        CTCSCI TECH LIMITED
CanAllocate:    
Street:         RM 023, 9/F BLK G KWAI SHING IND BLDG, 42-46
Street:         TAI LIN PAI RD, KWAI CHUNG
City:           New Territories
State/Prov:     
Country:        HK
PostalCode:     
RegDate:        2023-09-25
Updated:        2023-09-25
Source:         ARIN

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

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Pingable IPs

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

IP Address	ASN	Details
172.81.102.1	AS400618 Prime Security Corp.	`0.76ms` from Tokyo, JP

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
182.53.74.40	AS23969 TOT Public Company Limited	`7.54ms` from Bangkok, TH
35.86.222.216	AS16509 Amazon.com, Inc.	`0.50ms` from Boardman, US
99.31.76.248	AS7018 AT&T Enterprises, LLC	`3.64ms` from Chicago, US
70.119.7.8	AS11427 Charter Communications Inc	`14.32ms` from Houston, US
211.108.59.136	AS9318 SK Broadband Co Ltd	`1.13ms` from Incheon, KR
47.35.49.248	AS20115 Charter Communications LLC	`13.33ms` from Los Angeles, US
181.142.130.216	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`14.61ms` from Medellin, CO
73.24.101.216	AS7922 Comcast Cable Communications, LLC	`11.20ms` from Miami, US
108.29.179.8	AS701 Verizon Business	`2.36ms` from New York City, US
126.48.81.24	AS17676 SoftBank Corp.	`13.39ms` from Osaka, JP
114.166.172.72	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.13ms` from Osaka, JP
54.87.56.72	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
210.136.107.56	AS2514 NTT PC Communications, Inc.	`0.62ms` from Tokyo, JP
138.204.158.104	AS265798 LEVEL SEVEN SRL	`16.48ms` from Buenos Aires, AR
41.199.31.248	AS36992 ETISALAT MISR	`18.48ms` from Cairo, EG
34.135.50.200	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
106.41.54.8	AS4134 CHINANET-BACKBONE	`9.85ms` from Dalian, CN
103.142.63.216	AS139520 Ang India Limited	`0.61ms` from Delhi, IN
104.108.224.8	AS16625 Akamai Technologies, Inc.	`0.42ms` from Delhi, IN
93.133.32.136	AS6805 Telefonica Germany GmbH & Co.OHG	`4.19ms` from Duesseldorf, DE
3.69.125.72	AS16509 Amazon.com, Inc.	`0.14ms` from Frankfurt am Main, DE
157.18.12.72	AS17816 China Unicom IP network China169 Guangdong province	`5.25ms` from Guangzhou, CN
121.40.82.136	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.58ms` from Hangzhou, CN
174.4.226.120	AS6327 Shaw Communications	`6.33ms` from Kelowna, CA
67.225.182.40	AS32244 Liquid Web, L.L.C	`0.24ms` from Lansing, 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 172.81.102.122

traceroute to 172.81.102.122 (172.81.102.122): 64 hops max, 52 byte packets

5 [] 210.173.177.149 0.332 ms

6 *

7 [AS400618] 172.81.102.122 0.913 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On January 31st 2026

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