203.151.128.0/21

AS4618 · Internet Thailand Company Limited

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Summary

Country	Thailand
Domain	inter.net.th
ASN	AS4618
Parent Range	203.151.0.0/16
Registry	APNIC
ID	INET-TH

WHOIS Details

inetnum:        203.151.128.0 - 203.151.128.255
netname:        INET-TH
descr:          Internet Thailand Public Company Limited
country:        TH
admin-c:        ITP2-AP
tech-c:         CW2606-AP
abuse-c:        AI358-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-TH-INET
mnt-irt:        IRT-INET-TH
last-modified:  2023-08-09T04:09:18Z
source:         APNIC

irt:            IRT-INET-TH
address:        Internet Thailand Public Company Limited
address:        1768 Thai Summit Tower, 10th -12th Floor and IT Floor
address:        New Petchburi Road, Khwaeng Bang Kapi,
address:        Khet Huay Khwang, Bangkok 10310 Thailand
e-mail:         op-network@inet.co.th
abuse-mailbox:  op-network@inet.co.th
admin-c:        TY1494-AP
tech-c:         IP219-AP
auth:           # Filtered
remarks:        op-network@inet.co.th was validated on 2025-09-15
mnt-by:         MAINT-TH-INET
last-modified:  2025-11-17T23:08:36Z
source:         APNIC

role:           ABUSE INETTH
country:        ZZ
address:        Internet Thailand Public Company Limited
address:        1768 Thai Summit Tower, 10th -12th Floor and IT Floor
address:        New Petchburi Road, Khwaeng Bang Kapi,
address:        Khet Huay Khwang, Bangkok 10310 Thailand
phone:          +000000000
e-mail:         op-network@inet.co.th
admin-c:        TY1494-AP
tech-c:         IP219-AP
nic-hdl:        AI358-AP
remarks:        Generated from irt object IRT-INET-TH
remarks:        op-network@inet.co.th was validated on 2025-09-15
abuse-mailbox:  op-network@inet.co.th
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-15T12:43:30Z
source:         APNIC

person:         Chanon Watcharachinvong
address:        1768 Thai Summit Tower, 10-ITFl., New Petchaburi Road,Khwaeng Bang Kapi, Khet Huay Khwang, Bangkok 10310
country:        TH
phone:          +66-2257-7111
e-mail:         chanon.wa@inet.co.th
nic-hdl:        CW2606-AP
mnt-by:         MAINT-ITSC-AP
last-modified:  2023-08-09T04:05:42Z
source:         APNIC

person:         INTERNET THAILAND PCL
address:        1768 Thai Summit Tower, 10-ITFl., New Petchaburi Road,Khwaeng Bang Kapi, Khet Huay Khwang, Bangkok 10310
country:        TH
phone:          +66-2257-7111
e-mail:         op-network@inet.co.th
nic-hdl:        ITP2-AP
mnt-by:         MAINT-TH-INET
last-modified:  2022-06-13T06:34:28Z
source:         APNIC

route:          203.151.128.0/21
origin:         AS4618
descr:          Internet Thailand Company Ltd. 1768 IFCT Tower, 10th-12th FL IT Floor New Petchburi Road Khwaeng Bang Kapi Khet Huay Khwang
mnt-by:         MAINT-TH-INET
last-modified:  2020-11-19T08:24:19Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 203.151.128.0/21

Range	ASN	Company	Num of IPs
203.151.0.0/16	AS133529	Internet Thailand Company Limited	65,536
203.151.0.0/16	AS4618	Internet Thailand Company Limited	65,536
203.151.0.0/16	AS56223	Internet Thailand Company Limited	65,536

Nearby Ranges

BGP prefixes that overlap with 203.151.0.0/16

Range	ASN	Company	Num of IPs
203.151.0.0/16	AS133529	Internet Thailand Company Limited	65,536
203.151.0.0/16	AS4618	Internet Thailand Company Limited	65,536
203.151.0.0/16	AS56223	Internet Thailand Company Limited	65,536
203.151.44.0/23	AS4618	Co-location Segment	512
203.151.232.0/23	AS4618	INET Datacenter net232	512
203.151.20.0/23	AS4618	INET Datacenter net20	512
203.151.147.0/24	AS4618	INET Coporate branch (South)	256
203.151.155.0/24	AS4618	Udomsuksa School	256
203.151.169.0/24	AS4618	Internet Thailand Public Company Limited	256
203.151.178.0/24	AS4618	Internet Thailand Co.,Ltd.(Webhosting Service)	256
203.151.238.0/24	AS4618	Customer of INET	256
203.151.39.0/24	AS4618	Khonkaen Internet Co.,Ltd.(Point Of Presence)	256
203.151.40.0/24	AS4618	The Federation of Thai Industries	256
203.151.46.0/24	AS4618	Office of the Permanent Secretary	256
203.151.51.0/24	AS4618	INET KKN Branch	256
203.151.85.0/24	AS4618	INET-TH	256
203.151.18.0/24	AS23644	Government Savings Bank	256
203.151.159.0/24	AS55932	The Thai Bond Dealing Centre	256
203.151.25.0/24	AS38184	INET ISDN	256
203.151.11.0/24	AS4618	INET NC Server	256
203.151.115.0/24	AS4618	Inet-Empower #2	256

Hosted domains

There are 37 domain names hosted across 19 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
203.151.128.172	sanook.com	10
203.151.133.2	sanook.com	5
203.151.130.56	woodlandweft.world	5
203.151.130.42	huaypure.com	3
203.151.130.55	tencent.co.th	3
203.151.128.160	movingnow247.com	2
203.151.128.201	pubgm.in.th	2
203.151.133.91	tanasarah.com	1
203.151.130.76	cadeglianofestival.com	1
203.151.133.88	poderesantagostino.com	1
203.151.133.18	tencent.co.th	1
203.151.133.50	angryatheist.net	1
203.151.128.180	theparentingexpo.com	1
203.151.128.129	voov.co.th	1
203.151.133.92	pmgontheroad.com	1
203.151.133.90	usabilityindia.com	1
203.151.133.89	pulmonixinc.com	1
203.151.133.19	joox.co.th	1
203.151.130.29	sanookknowledge.com	1

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

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Pingable IPs

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

IP Address	ASN	Details
203.151.135.73	AS4618 Internet Thailand Company Limited	`0.52ms` from Bangkok, TH
203.151.128.45	AS4618 Internet Thailand Company Limited	`0.54ms` from Bangkok, TH
203.151.130.102	AS4618 Internet Thailand Company Limited	`0.55ms` from Bangkok, TH
203.151.134.33	AS4618 Internet Thailand Company Limited	`0.49ms` from Bangkok, TH
203.151.131.49	AS4618 Internet Thailand Company Limited	`0.95ms` from Bangkok, TH
203.151.133.16	AS4618 Internet Thailand Company Limited	`0.49ms` from Bangkok, TH
203.151.132.63	AS4618 Internet Thailand Company Limited	`0.77ms` from Bangkok, TH
203.151.129.147	AS4618 Internet Thailand Company Limited	`1.02ms` 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
5.76.143.149	AS9198 JSC Kazakhtelecom	`13.47ms` from Almaty, KZ
68.35.230.245	AS7922 Comcast Cable Communications, LLC	`9.47ms` from Atlanta, US
59.182.118.69	AS9829 National Internet Backbone	`13.85ms` from Bengaluru, IN
77.191.119.101	AS6805 Telefonica Germany GmbH & Co.OHG	`4.59ms` from Berlin, DE
97.118.196.197	AS209 CenturyLink Communications, LLC	`2.32ms` from Denver, US
213.246.174.165	AS8586 TalkTalk Communications Limited	`2.07ms` from Erith, GB
147.163.158.5	AS137 Consortium GARR	`15.08ms` from Frosinone, IT
150.242.83.213	AS133775 Xiamen	`5.50ms` from Fuzhou, CN
81.130.192.245	AS2856 British Telecommunications PLC	`2.59ms` from London, GB
203.193.196.101	AS38611 Bendigo Community Telco	`1.06ms` from Melbourne, AU
222.191.133.197	AS4134 CHINANET-BACKBONE	`4.90ms` from Nanjing, CN
150.59.17.197	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`3.41ms` from Osaka, JP
111.235.240.197	AS131584 Taiwan Intelligent Fiber Optic Network Co.,Ltd.	`0.74ms` from Taipei, TW
99.231.196.197	AS812 Rogers Communications Canada Inc.	`4.83ms` from Toronto, CA
211.138.105.149	AS56042 China Mobile communications corporation	`9.67ms` from Xi'an, CN
54.174.119.181	AS14618 Amazon.com, Inc.	`0.46ms` from Ashburn, US
63.120.252.133	AS701 Verizon Business	`3.05ms` from Ashburn, US
113.166.192.37	AS45899 VNPT Corp	`4.93ms` from Da Nang, VN
13.111.137.197	AS14340 Salesforce.com, Inc.	`0.88ms` from Dallas, US
24.9.197.133	AS7922 Comcast Cable Communications, LLC	`2.61ms` from Denver, US
94.204.23.37	AS15802 Emirates Integrated Telecommunications Company PJSC	`3.69ms` from Dubai, AE
94.206.97.21	AS15802 Emirates Integrated Telecommunications Company PJSC	`2.72ms` from Dubai, AE
108.130.252.53	AS16509 Amazon.com, Inc.	`0.41ms` from Dublin, IE
141.147.9.21	AS31898 Oracle Corporation	`0.26ms` from Frankfurt am Main, DE
94.27.22.165	AS15895 "Kyivstar" PJSC	`17.67ms` from Kyiv, UA

Traceroute

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

traceroute -a -n -q1 -f3 203.151.135.19

traceroute to 203.151.135.19 (203.151.135.19): 64 hops max, 52 byte packets

3 [AS64050] 61.19.60.69 0.805 ms

4 [AS4618] 203.150.222.217 0.942 ms

5 [AS4618] 203.151.135.19 0.763 ms

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On March 13th 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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