AS4651 The Communications Authority of Thail... details

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AS4651 – The Communications Authority of Thailand(CAT)

Field	Value
Country	Thailand
Website	ntplc.co.th
Hosted domains	2
Number of IPv4	9,216
Number of IPv6	79,229,371,440,083,952,222,718,656,512
ASN type	ISP
Registry	apnic
Allocated	30 years ago on Dec 27, 1995
Updated	5 years ago on Jun 16, 2020

Netblock	Company	Num of IPs
122.155.244.0/22	CAT TELECOM Data Comm. Dept, Intrenet Office	1,024
122.155.224.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.225.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.226.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.227.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.228.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.230.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.232.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.235.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.236.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.237.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.238.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.243.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
122.155.244.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
148.253.59.0/24	CDNetworks Inc	256
163.171.105.0/24	CDNetworks Inc	256
163.171.106.0/24	CDNetworks Inc	256
163.171.108.0/24	CDNetworks Inc	256
163.171.120.0/24	CDNetworks Inc	256
163.171.121.0/24	CDNetworks Inc	256
174.35.3.0/24	CDNetworks Inc.	256
174.35.53.0/24	CDNetworks Inc.	256
185.27.231.0/24	CDNetworks Inc	256
202.47.253.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.0.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.1.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.14.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.2.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.4.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.7.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
61.19.9.0/24	CAT TELECOM Data Comm. Dept, Intrenet Office	256
66.114.56.0/24	CDNetworks Inc.	256
93.188.128.0/24	CDNetworks Inc.	256
93.188.129.0/24	CDNetworks Inc.	256

Netblock	Company
2001:c38::/32	CAT Telecom Public Company Limited
2001:c38:5000::/48	CAT Telecom Public Company Limited

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WHOIS Details

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                                                ASHandle:       AS4651
                                                OrgID:          AS4651
                                                ASName:         AS4651
                                                ASNumber:       AS4651
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 2 domain names hosted across 2 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
174.35.53.11	████████	1
122.155.237.241	██████████	1

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Peers

There are 299 peers for this ASN.

Peers	Name
AS1031	PEER 1031 LLC
AS1103	SURF B.V.
AS1140	Stichting Internet Domeinregistratie Nederland
AS12389	PJSC Rostelecom
AS12552	GlobalConnect AB
AS12637	SEEWEB s.r.l.
AS1267	WIND TRE S.P.A.
AS1273	Vodafone Group PLC
AS12779	IT.Gate S.p.A.
AS12859	BIT BV
AS12969	Vodafone Iceland
AS1299	Arelion Sweden AB
AS13030	Init7 (Switzerland) Ltd.
AS13058	serve-u - Buchholz und Suenderhauf GbR
AS131090	CAT TELECOM Public Company Ltd,CAT
AS131293	TOT Public Company Limited
AS132300	NIPA TECHNOLOGY CO., LTD
AS132337	Axclusive
AS13237	euNetworks GmbH
AS133210	EN Technologies Pte Ltd
AS13335	Cloudflare, Inc.
AS133385	Atom Myanmar Limited
AS133524	Global Technology Co., Ltd.
AS135063	POP NIX COMPANY LIMITED
AS135589	Internet Maekhong Network Company Limited
AS136523	COLODEE DIGITAL NETWORK CO.,LTD.
AS136557	Host Universal Pty Ltd
AS137409	GSL Networks Pty LTD
AS138616	Sanuk Systems (Thailand) Co., Ltd
AS138997	Eons Data Communications Limited
AS139014	Next Route Company Limited
AS139341	ACE
AS139591	CAT Telecom Public Company Limited 13th CAT TELECOM TOWER NEW ROAD SRIPHRAYA BANGRAK BANGKOK THAILAND
AS139620	MYANMAR TELECOMMUNICATION NETWORK PUBLIC COMPANY LIMITED
AS140627	OneQode
AS140985	Global Innovative Solution Co., LTD
AS141419	CHINA MOBILE INTERNATIONAL (THAILAND) LTD.
AS142271	EWS DS Networks Inc
AS14537	Continent 8 LLC
AS14630	Invesco Group Services, Inc.
AS14840	BR.Digital Provider
AS148968	Falcore Investments Pty Ltd
AS148997	KTB COMPUTER SERVICES COMPANY LIMITED
AS14907	Wikimedia Foundation Inc.
AS150000	Data-Beam Business Solution
AS151326	DCConnect Communication Pte. Ltd.
AS152127	OneAsia Data Center (BKK1) Company Limited
AS15547	netplus.ch SA
AS15605	Connesi s.p.a.
AS15802	Emirates Integrated Telecommunications Company PJSC
AS15943	wilhelm.tel GmbH
AS15958	CETINdoo-NET
AS16552	Tiggee LLC
AS174	Cogent Communications
AS17425	Provincial Electricity Authority (PEA)
AS17557	Pakistan Telecommunication Company Limited
AS17639	Converge ICT Solutions Inc.
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS17660	DrukNet ISP
AS17676	SoftBank Corp.
AS18106	Viewqwest Pte Ltd
AS18187	Source Telecoms Inc.
AS1828	Unitas Global
AS1836	green.ch AG
AS18403	FPT Telecom Company
AS18409	Bank of Thailand, Bangkok, Thailand
AS19151	BroadbandONE, LLC
AS198150	SIACOM JSC
AS198385	AlpineDC SA
AS199524	G-Core Labs S.A.
AS199938	Netzwerge GmbH
AS200242	Ember Ana Reimer
AS204092	Association GRIFON
AS20485	Joint Stock Company TransTeleCom
AS205103	Telegraph42 Management GmbH
AS205112	PHILUNET GmbH
AS205206	Netsite A/S
AS20562	Broadband Hosting B.V.
AS206356	Freifunk Essen e.V.
AS20764	CJSC RASCOM
AS207841	Inferno Communications Ltd
AS209022	Tschajera Limited
AS209090	Association Stolon
AS20932	Services Industriels de Geneve
AS20940	Akamai International B.V.
AS209823	Enki Multimedia EURL
AS210937	Xiufeng Guo
AS2119	Telenor Norge AS
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS213151	Christian Elsen
AS213241	TECHIT.BE SRL
AS21412	UAB "Cgates"
AS22356	Durand do Brasil Ltda
AS23473	PAVLOV MEDIA INC
AS23673	Cogetel Online, Cambodia, ISP
AS23764	CTGNet
AS23884	Proen Corp Public Company Limited.
AS23969	TOT Public Company Limited
AS24187	KIRZ Service Provider
AS24429	Zhejiang Taobao Network Co.,Ltd

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ASN API

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Upstreams

There are 11 upstreams for this ASN.

upstreams	Name
AS1299	Arelion Sweden AB
AS174	Cogent Communications
AS2914	NTT America, Inc.
AS3356	Level 3 Parent, LLC
AS3491	PCCW Global, Inc.
AS4637	Telstra Global
AS4766	Korea Telecom
AS5511	Orange S.A.
AS6453	TATA COMMUNICATIONS (AMERICA) INC
AS6461	Zayo Bandwidth
AS6939	Hurricane Electric LLC

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Downstreams

There are 37 downstreams for this ASN.

Downstreams	Name
AS131090	CAT TELECOM Public Company Ltd,CAT
AS131293	TOT Public Company Limited
AS132300	NIPA TECHNOLOGY CO., LTD
AS13335	Cloudflare, Inc.
AS133524	Global Technology Co., Ltd.
AS135063	POP NIX COMPANY LIMITED
AS135589	Internet Maekhong Network Company Limited
AS136523	COLODEE DIGITAL NETWORK CO.,LTD.
AS138616	Sanuk Systems (Thailand) Co., Ltd
AS139014	Next Route Company Limited
AS139341	ACE
AS139591	CAT Telecom Public Company Limited 13th CAT TELECOM TOWER NEW ROAD SRIPHRAYA BANGRAK BANGKOK THAILAND
AS139620	MYANMAR TELECOMMUNICATION NETWORK PUBLIC COMPANY LIMITED
AS140985	Global Innovative Solution Co., LTD
AS141419	CHINA MOBILE INTERNATIONAL (THAILAND) LTD.
AS148997	KTB COMPUTER SERVICES COMPANY LIMITED
AS152127	OneAsia Data Center (BKK1) Company Limited
AS18409	Bank of Thailand, Bangkok, Thailand
AS20940	Akamai International B.V.
AS23884	Proen Corp Public Company Limited.
AS23969	TOT Public Company Limited
AS24187	KIRZ Service Provider
AS24429	Zhejiang Taobao Network Co.,Ltd
AS38328	Ministry of Finance
AS38450	Ministry of Infomation Communication Technology
AS38566	NTTCTNET
AS38794	UIH
AS45413	ServeNET Solution Limited Partnership
AS4618	Internet Thailand Company Limited
AS4621	UNINET-TH
AS4765	Pacific Internet Pte Ltd
AS54994	Meteverse Limited.
AS55514	Electricity Generating Authority of Thailand (EGAT)
AS56067	453 Ladplacout Jorakhaebua
AS9335	CAT Telecom Public Company Limited
AS9835	Government Information Technology Services
AS9931	The Communication Authoity of Thailand, CAT

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ASN API

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Pingable IPs

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

IP Address	ASN	Details
122.155.230.150	AS4651 The Communications Authority of Thailand(CAT)	`1.45ms` from Bangkok, TH
122.155.245.196	AS4651 The Communications Authority of Thailand(CAT)	`24.15ms` from Singapore, SG
122.155.244.147	AS4651 The Communications Authority of Thailand(CAT)	`25.13ms` from Singapore, SG
122.155.238.178	AS4651 The Communications Authority of Thailand(CAT)	`1.96ms` from Bangkok, TH
93.188.129.236	AS4651 The Communications Authority of Thailand(CAT)	`25.20ms` from Singapore, SG
122.155.243.98	AS4651 The Communications Authority of Thailand(CAT)	`25.13ms` from Singapore, SG
2001:c38:5000::4651:7	AS4651 The Communications Authority of Thailand(CAT)	`0.40ms` from Los Angeles, US
174.35.3.132	AS4651 The Communications Authority of Thailand(CAT)	`24.50ms` from Singapore, SG
163.171.108.240	AS4651 The Communications Authority of Thailand(CAT)	`25.18ms` from Singapore, SG
122.155.236.23	AS4651 The Communications Authority of Thailand(CAT)	`25.14ms` from Singapore, SG
2001:c38:5001:101::2	AS4651 The Communications Authority of Thailand(CAT)	`160.38ms` from Paris, FR
148.253.59.71	AS4651 The Communications Authority of Thailand(CAT)	`25.20ms` from Singapore, SG
122.155.225.2	AS4651 The Communications Authority of Thailand(CAT)	`1.85ms` from Bangkok, TH
122.155.237.221	AS4651 The Communications Authority of Thailand(CAT)	`24.16ms` from Singapore, SG
122.155.224.74	AS4651 The Communications Authority of Thailand(CAT)	`1.18ms` from Bangkok, TH
61.19.9.210	AS4651 The Communications Authority of Thailand(CAT)	`0.38ms` from Los Angeles, US
163.171.121.41	AS4651 The Communications Authority of Thailand(CAT)	`25.18ms` from Singapore, SG
122.155.246.6	AS4651 The Communications Authority of Thailand(CAT)	`24.15ms` from Singapore, SG
61.19.1.197	AS4651 The Communications Authority of Thailand(CAT)	`24.66ms` from Singapore, SG
122.155.227.5	AS4651 The Communications Authority of Thailand(CAT)	`25.91ms` from Singapore, SG
61.19.0.9	AS4651 The Communications Authority of Thailand(CAT)	`24.66ms` from Singapore, SG
185.27.231.136	AS4651 The Communications Authority of Thailand(CAT)	`25.21ms` from Singapore, SG
163.171.106.34	AS4651 The Communications Authority of Thailand(CAT)	`25.20ms` from Singapore, SG
122.155.247.5	AS4651 The Communications Authority of Thailand(CAT)	`24.16ms` from Singapore, SG
122.155.226.6	AS4651 The Communications Authority of Thailand(CAT)	`1.26ms` from Bangkok, TH

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
146.185.183.107	AS14061 DigitalOcean, LLC	`0.20ms` from Amsterdam, NL
122.154.124.11	AS9931 The Communication Authoity of Thailand, CAT	`3.67ms` from Bangkok, TH
147.135.220.219	AS16276 OVH SAS	`2.84ms` from Frankfurt am Main, DE
158.220.182.11	AS212795 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.	`1.17ms` from Frankfurt am Main, DE
91.19.245.91	AS3320 Deutsche Telekom AG	`5.02ms` from Frankfurt am Main, DE
87.158.242.219	AS3320 Deutsche Telekom AG	`7.56ms` from Frankfurt am Main, DE
43.218.224.171	AS16509 Amazon.com, Inc.	`0.10ms` from Jakarta, ID
94.62.12.43	AS12353 Vodafone Portugal	`2.21ms` from Lisbon, PT
116.222.189.219	AS9824 JCOM Co., Ltd.	`8.22ms` from Osaka, JP
52.42.26.251	AS16509 Amazon.com, Inc.	`4.49ms` from Portland, US
3.83.248.27	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
23.38.227.203	AS16625 Akamai Technologies, Inc.	`0.60ms` from San Jose, US
118.53.77.43	AS4766 Korea Telecom	`2.43ms` from Seoul, KR
221.117.164.219	AS17506 ARTERIA Networks Corporation	`1.77ms` from Tokyo, JP
50.7.215.59	AS30058 FDCservers.net	`0.08ms` from Amsterdam, NL
76.120.241.219	AS7922 Comcast Cable Communications, LLC	`8.52ms` from Ashburn, US
47.93.80.171	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`1.85ms` from Beijing, CN
199.231.233.203	AS36231 Tempest Hosting, LLC	`0.76ms` from Chicago, US
181.1.168.11	AS7303 Telecom Argentina S.A.	`9.29ms` from Cordoba, AR
117.201.147.11	AS9829 National Internet Backbone	`12.10ms` from Delhi, IN
34.241.59.27	AS16509 Amazon.com, Inc.	`0.10ms` from Dublin, IE
24.166.87.219	AS10796 Charter Communications Inc	`9.10ms` from Flint, US
175.147.187.187	AS4837 CHINA UNICOM China169 Backbone	`10.63ms` from Liaoyang, CN
175.148.166.27	AS4837 CHINA UNICOM China169 Backbone	`6.28ms` from Liaoyang, CN
177.1.163.155	AS8167 V tal	`2.60ms` from Novo Hamburgo, BR

Traceroute

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

traceroute -a -n -q1 -f2 163.171.121.28

traceroute to 163.171.121.28 (163.171.121.28): 64 hops max, 52 byte packets

2 [AS9009] 193.27.15.94 1.016 ms

3 *

4 [AS4651] 61.19.9.141 26.245 ms

5 *

6 [AS4651] 163.171.121.28 25.272 ms

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On September 11th 2025

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What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS4651 at robtex.

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