203.151.128.0/19

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:        203.151.0.0 - 203.151.255.255
netname:        INET-TH
descr:          Internet Thailand Company Limited
country:        TH
org:            ORG-ITCL3-AP
admin-c:        INR1-AP
tech-c:         INR1-AP
abuse-c:        AI358-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-TH-INET
mnt-irt:        IRT-INET-TH
last-modified:  2020-11-20T04:03:49Z
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 2026-03-18
mnt-by:         MAINT-TH-INET
last-modified:  2026-03-18T07:00:20Z
source:         APNIC

organisation:   ORG-ITCL3-AP
org-name:       Internet Thailand Company Ltd.
org-type:       LIR
country:        TH
address:        1768 IFCT Tower, 10th-12th FL
address:        IT Floor New Petchburi Road
address:        Khwaeng Bang Kapi
address:        Khet Huay Khwang
phone:          +662-257-7000
fax-no:         +662-257-7222
e-mail:         noc@inet.co.th
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:42Z
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 2026-03-18
abuse-mailbox:  op-network@inet.co.th
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-18T07:00:37Z
source:         APNIC

role:           INET NOC ROLE
address:        1768 Thai Summit Tower, New Petchburi Road
address:        Khet Huay Khwang, Bangkok
address:        Thailand 10310
country:        TH
phone:          +662 02 2577000
fax-no:         +662 02 2577275
e-mail:         noc@inet.co.th
remarks:        send spam and abuse reports to noc@inet.co.th
admin-c:        CN7-AP
tech-c:         AP224-AP
tech-c:         IP219-AP
tech-c:         NL276-AP
nic-hdl:        INR1-AP
remarks:        http://www.inet.co.th
notify:         noc@inet.co.th
mnt-by:         MAINT-TH-INET
last-modified:  2024-09-19T08:38:11Z
source:         APNIC

route:          203.151.208.0/20
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:  2021-06-01T07:31:15Z
source:         APNIC

Overlapping Ranges

BGP prefixes that contain 203.151.128.0/19

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

BGP prefixes that are contained by 203.151.128.0/19

Range	ASN	Company	Num of IPs
203.151.159.0/24	AS55932	The Thai Bond Dealing Centre	256
203.151.147.0/24	AS4618	INET Coporate branch (South)	256
203.151.155.0/24	AS4618	Udomsuksa School	256

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
203.151.238.0/24	AS4618	Customer of INET	256
203.151.85.0/24	AS4618	INET-TH	256
203.151.178.0/24	AS4618	Internet Thailand Co.,Ltd.(Webhosting Service)	256
203.151.11.0/24	AS4618	INET NC Server	256
203.151.39.0/24	AS4618	Khonkaen Internet Co.,Ltd.(Point Of Presence)	256
203.151.155.0/24	AS4618	Udomsuksa School	256
203.151.40.0/24	AS4618	The Federation of Thai Industries	256
203.151.159.0/24	AS55932	The Thai Bond Dealing Centre	256
203.151.147.0/24	AS4618	INET Coporate branch (South)	256
203.151.115.0/24	AS4618	Inet-Empower #2	256
203.151.18.0/24	AS23644	Government Savings Bank	256
203.151.169.0/24	AS4618	Internet Thailand Public Company Limited	256
203.151.25.0/24	AS38184	INET ISDN	256
203.151.46.0/24	AS4618	Office of the Permanent Secretary	256
203.151.51.0/24	AS4618	INET KKN Branch	256

Hosted domains

There are 1,674 domain names hosted across 105 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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

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

IP Address	ASN	Details
203.151.128.13	AS4618 Internet Thailand Company Limited	`0.53ms` from Bangkok, TH
203.151.144.1	AS4618 Internet Thailand Company Limited	`2.64ms` from Bangkok, TH
203.151.135.74	AS4618 Internet Thailand Company Limited	`0.54ms` from Bangkok, TH
203.151.151.95	AS4618 Internet Thailand Company Limited	`0.55ms` from Bangkok, TH
203.151.152.84	AS4618 Internet Thailand Company Limited	`2.81ms` from Bangkok, TH
203.151.140.195	AS4618 Internet Thailand Company Limited	`3.35ms` from Bangkok, TH
203.151.137.221	AS4618 Internet Thailand Company Limited	`0.81ms` from Bangkok, TH
203.151.156.46	AS4618 Internet Thailand Company Limited	`0.53ms` from Bangkok, TH
203.151.134.15	AS4618 Internet Thailand Company Limited	`0.55ms` from Bangkok, TH
203.151.159.129	AS55932 The Thai Bond Market Association	`3.45ms` from Bangkok, TH
203.151.148.57	AS4618 Internet Thailand Company Limited	`0.51ms` from Bangkok, TH
203.151.129.147	AS4618 Internet Thailand Company Limited	`1.05ms` from Bangkok, TH
203.151.142.107	AS4618 Internet Thailand Company Limited	`0.80ms` from Bangkok, TH
203.151.130.102	AS4618 Internet Thailand Company Limited	`0.59ms` from Bangkok, TH
203.151.155.70	AS4618 Internet Thailand Company Limited	`2.84ms` from Bangkok, TH
203.151.145.49	AS4618 Internet Thailand Company Limited	`2.94ms` from Bangkok, TH
203.151.154.254	AS4618 Internet Thailand Company Limited	`3.93ms` from Bangkok, TH
203.151.138.1	AS4618 Internet Thailand Company Limited	`1.17ms` from Bangkok, TH
203.151.132.249	AS4618 Internet Thailand Company Limited	`0.76ms` from Bangkok, TH
203.151.158.254	AS4618 Internet Thailand Company Limited	`0.94ms` from Bangkok, TH
203.151.131.49	AS4618 Internet Thailand Company Limited	`0.84ms` from Bangkok, TH
203.151.133.16	AS4618 Internet Thailand Company Limited	`0.47ms` from Bangkok, TH
203.151.150.190	AS4618 Internet Thailand Company Limited	`2.80ms` from Bangkok, TH
203.151.136.192	AS4618 Internet Thailand Company Limited	`2.99ms` from Bangkok, TH
203.151.153.248	AS4618 Internet Thailand Company Limited	`1.49ms` 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
112.141.96.227	AS9443 Vocus Retail	`2.00ms` from Adelaide, AU
91.86.3.51	AS47377 Orange Belgium SA	`9.69ms` from Amsterdam, NL
34.76.146.115	AS396982 Google LLC	`0.15ms` from Brussels, BE
34.81.233.163	AS396982 Google LLC	`0.14ms` from Chang-hua, TW
189.14.47.211	AS22689 SERCOMTEL S/A TELECOMUNICACOES	`6.56ms` from Curitiba, BR
102.221.250.83	AS328760 ZTEL PTY LTD	`0.02ms` from Durban, ZA
16.162.83.35	AS16509 Amazon.com, Inc.	`0.13ms` from Hong Kong, HK
212.219.44.131	AS786 Jisc Services Limited	`7.84ms` from London, GB
195.162.115.179	AS31655 Gamma Telecom Holdings Ltd	`2.47ms` from Manchester, GB
128.227.208.3	AS6356 University of Florida	`7.55ms` from Miami, US
134.159.181.67	AS4637 Telstra Global	`2.64ms` from Perth, AU
207.173.8.83	AS7385 Allstream Business US, LLC	`1.64ms` from Phoenix, US
213.41.154.163	AS13193 Keyyo SA	`7.23ms` from Saint-Denis, FR
63.135.123.115	AS14992 NewtekOne, Inc.	`8.47ms` from San Diego, US
210.179.223.179	AS4766 Korea Telecom	`6.37ms` from Seoul, KR
60.111.62.243	AS17676 SoftBank Corp.	`2.58ms` from Tokyo, JP
81.8.214.3	AS25176 AC-Net AB	`3.61ms` from Umea, SE
87.207.155.147	AS9141 P4 Sp. z o.o.	`12.34ms` from Warsaw, PL
98.146.149.3	AS10838 Charter Communications Inc	`19.12ms` from Woodinville, US
182.124.14.211	AS4837 CHINA UNICOM China169 Backbone	`5.53ms` from Zhengzhou, CN
41.109.173.3	AS36947 Telecom Algeria	`11.56ms` from Algiers, DZ
99.62.23.67	AS7018 AT&T Enterprises, LLC	`6.54ms` from Atlanta, US
110.83.40.83	AS4134 CHINANET-BACKBONE	`3.31ms` from Fuzhou, CN
79.202.98.147	AS3320 Deutsche Telekom AG	`1.61ms` from Hamburg, DE
123.18.181.19	AS45899 VNPT Corp	`2.85ms` from Hanoi, VN

Traceroute

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

traceroute -a -n -q1 203.151.143.161

traceroute to 203.151.143.161 (203.151.143.161): 64 hops max, 52 byte packets

1 [AS23884] 103.76.182.1 14.888 ms

2 *

3 [AS64050] 61.19.60.69 0.895 ms

4 [AS4618] 203.150.222.250 0.508 ms

5 [AS4618] 203.151.143.161 1.181 ms

Measurement taken from

IPinfo ProbeNet in Bangkok, TH

On March 29th 2026

What are IP address ranges?

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