Data as of Nov 15, 2026

203.154.0.0/20

No anonymizer space · no proxy exits in 30 days

Internet Thailand Company Limited · space held by Internet Thailand Company Ltd.

Announcement

this exact prefix

RPKI valid

Announced by

AS4618

Type

Hosting

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
203.154.0.0/19 since May 2005	AS4618	Hosting	1	Internet Thailand Company Ltd.
203.154.0.0/16 since May 2005	AS4618	Hosting	16 1 always on	Internet Thailand Company Ltd.

More specific

Announcements inside

Prefix	Origin	Type	Holder
203.154.4.0/24 since Jul 2024	AS4618	Hosting	Internet Thailand Company Ltd.
203.154.5.0/24 since Aug 2024	AS4618	Hosting	Internet Thailand Company Ltd.
203.154.6.0/24 since Aug 2024	AS4618	Hosting	Internet Thailand Company Ltd.
203.154.7.0/24 since Nov 2024	AS4618	Hosting	Internet Thailand Company Ltd.
203.154.10.0/24 since Nov 2024	AS4618	Hosting	Internet Thailand Company Ltd.
203.154.14.0/24 since Dec 2017	AS4618	Hosting	Internet Thailand Company Ltd.

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
203.154.0.0/16	65,536	INET-TH	Internet Thailand Company Ltd. (ORG-ITCL3-AP) · TH	ALLOCATED PORTABLE	—	op-network@inet.co.th
└ 203.154.3.0/24	256	INET-TH	INET North-PPDP	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.4.0/24	256	INET-TH	INET CMI Branch	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.7.0/24	256	INET-TH	Internet Thailand Public Company Limited (Chiang Mai Branch)	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.8.0/28	16	TITECH-TH	Tokyo Tech Global Collaboration Office (Thailand)	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.8.16/28	16	NECTEC-INET-TH	National Electronics and Computer Technology Center	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.8.32/28	16	INET-SC-PARK-HOTSPOT	INET Hotspot ScPark	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.9.0/28	16	CONCEPTFOUNDATION	The Concept Foundation	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.9.16/28	16	CCP-NSTDA-TH	Computer Clustering Promotion Program	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH
└ 203.154.12.0/24	256	INET-TH	INET North-PPDP	ASSIGNED NON-PORTABLE	—	op-network@inet.co.th via INET-TH

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

Announcement Routing history RPKI & IRR Whois & abuse

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern: Stable
First seen: Dec 2013
Current origin since: Jan 2026 · 9 mo
Origin networks: 1

RPKI

Route origin authorizations

ROA prefix	ASN	Max len	Anchor	Verdict
203.154.0.0/19	AS4618	/20	APNIC	RPKI valid

IRR

Route objects on the exact prefix

Origin	Registry	Description	Maintainer	Modified
AS4618	APNIC	Internet Thailand Company Ltd.	MAINT-TH-INET	Jun 1, 2021
AS4618	RADB	Proxy-registered route object	MAINT-AS9304	Nov 13, 2023
AS4618	NTTCOM	Proxy-registered route object	MAINT-AS9304	Jun 24, 2020

IRR inside

Route objects inside

Prefix	Origin	Registry	Description	Maintainer	Modified
203.154.2.0/24	AS4618	RADB	Proxy-registered route object	MAINT-AS9304	Nov 13, 2023
203.154.2.0/24	AS4618	NTTCOM	Proxy-registered route object	MAINT-AS9304	Jun 24, 2020
203.154.2.0/24	AS4618	APNIC	Internet Thailand Company Ltd.	MAINT-TH-INET	Jan 3, 2025
203.154.11.0/24	AS4618	RADB	Proxy-registered route object	MAINT-AS9304	Nov 13, 2023
203.154.11.0/24	AS4618	NTTCOM	Proxy-registered route object	MAINT-AS9304	Jun 24, 2020
203.154.11.0/24	AS4618	APNIC	Internet Thailand Company Ltd.	MAINT-TH-INET	Jul 30, 2025