203.151.128.0/21

AS4618 · Internet Thailand Company Limited

Need more data or want to access it via API or data downloads? Sign up to get free access

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:  2025-09-15T12:42:52Z
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	AS4618	Internet Thailand Company Limited	65,536
203.151.0.0/16	AS56223	Internet Thailand Company Limited	65,536
203.151.0.0/16	AS133529	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
203.151.178.0/24	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 36 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
203.151.130.56	xn--m3ch0ad7c2b7d7c.net	4
203.151.130.55	tencent.co.th	3
203.151.133.92	pmgontheroad.com	1
203.151.130.27	voov.co.th	1
203.151.128.180	theparentingexpo.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

Read more

Pingable IPs

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

IP Address	ASN	Details
203.151.128.14	AS4618 Internet Thailand Company Limited	`0.58ms` from Bangkok, TH
203.151.131.30	AS4618 Internet Thailand Company Limited	`0.95ms` from Bangkok, TH
203.151.130.57	AS4618 Internet Thailand Company Limited	`0.62ms` from Bangkok, TH
203.151.134.25	AS4618 Internet Thailand Company Limited	`0.49ms` from Bangkok, TH
203.151.133.190	AS4618 Internet Thailand Company Limited	`0.49ms` from Bangkok, TH
203.151.135.73	AS4618 Internet Thailand Company Limited	`0.51ms` from Bangkok, TH
203.151.129.136	AS4618 Internet Thailand Company Limited	`0.96ms` from Bangkok, TH
203.151.132.99	AS4618 Internet Thailand Company Limited	`0.82ms` 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
84.82.208.229	AS1136 KPN B.V.	`2.96ms` from Amsterdam, NL
103.160.135.5	AS132987 Enew Infotech	`6.10ms` from Delhi, IN
190.112.205.21	AS61919 AR3 Servicos EIRELI ME	`18.24ms` from Fortaleza, BR
98.40.175.165	AS7922 Comcast Cable Communications, LLC	`7.07ms` from Houston, US
113.239.19.197	AS4837 CHINA UNICOM China169 Backbone	`10.25ms` from Liaoyang, CN
160.251.154.53	AS58791 GMO Internet Group, Inc.	`6.48ms` from Osaka, JP
109.183.249.197	AS13036 T-Mobile Czech Republic a.s.	`3.58ms` from Prague, CZ
54.215.170.149	AS16509 Amazon.com, Inc.	`0.17ms` from San Jose, US
3.162.215.53	AS16509 Amazon.com, Inc.	`0.07ms` from Santiago, CL
121.143.73.101	AS4766 Korea Telecom	`1.32ms` from Seoul, KR
111.237.80.85	AS2516 KDDI CORPORATION	`2.28ms` from Tokyo, JP
184.67.19.53	AS6327 Shaw Communications Inc.	`0.60ms` from Vancouver, CA
86.32.140.5	AS205714 Telemach Hrvatska d.o.o.	`1.10ms` from Zagreb, HR
63.120.252.133	AS701 Verizon Business	`3.14ms` from Ashburn, US
5.197.66.5	AS57293 AG Telekom MMC.	`1.96ms` from Baku, AZ
68.238.59.213	AS13977 Consolidated Communications, Inc.	`2.61ms` from Boston, US
213.167.164.69	AS20805 Gamma Holding GmbH	`0.40ms` from Frankfurt am Main, DE
81.242.231.229	AS5432 Proximus NV	`3.84ms` from Gravelines, FR
196.12.50.5	AS7633 Software Technology Parks of India - Bangalore	`1.78ms` from Hyderabad, IN
94.60.12.37	AS12353 Vodafone Portugal	`6.58ms` from Lisbon, PT
71.94.159.149	AS20115 Charter Communications LLC	`4.43ms` from Los Angeles, US
197.249.52.245	AS25139 TVCABO - Comunicacoes Multimedia, Lda	`0.81ms` from Maputo, MZ
60.137.164.197	AS17676 SoftBank Corp.	`3.60ms` from Osaka, JP
158.192.2.21	AS9159 Credit Agricole SA	`3.27ms` from Paris, FR
60.214.179.85	AS4837 CHINA UNICOM China169 Backbone	`5.06ms` from Qingdao, CN

Traceroute

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

traceroute -a -n -q1 -f6 -m11 203.151.131.133

traceroute to 203.151.131.133 (203.151.131.133): 11 hops max, 52 byte packets

6 [AS64050] 61.19.60.69 2.06 ms

7 [AS4618] 203.150.222.217 2.336 ms

8 [AS4618] 203.151.112.70 2.077 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On October 30th 2025

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.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales