164.115.251.0/24

Currently announced jointly by AS38450 Ministry of Infomation Communication Technology, AS66666, in the routed prefix 164.115.248.0/22.

Current ASN: AS38450 AS66666; Ministry of Infomation Communication Technology
Routed prefix: 164.115.248.0/22; Most specific route covering this prefix
ASNs over time: 2; 6 announcement records
RIR allocation: APNIC; Thailand · 164.115.0.0/16

Routing data · Nov 1, 2026, 20:20 UTC

ASN historyEvery routed prefix covering 164.115.251.0/24

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
164.115.251.0/24	AS38450	Ministry of Infomation Communication Technology	Thailand	Before monitoring	2026-11-01 00:27	Stopped
164.115.251.0/24	AS66666	—	—	Before monitoring	2026-11-01 00:27	Stopped
164.115.248.0/22	AS38450	Ministry of Infomation Communication Technology	Thailand	Before monitoring	2026-11-01 20:20	Announcing
164.115.248.0/22	AS66666	—	—	2026-10-31 22:25	2026-11-01 20:20	Announcing
164.115.224.0/19	AS38450	Ministry of Infomation Communication Technology	Thailand	Before monitoring	2026-11-01 20:20	Announcing
164.115.224.0/19	AS66666	—	—	2026-10-31 22:25	2026-11-01 20:20	Announcing

No more specific routes inside this prefix.

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-11-01 02:25	164.115.251.0/24	Withdrawal	AS38450 AS66666	Ministry of Infomation Communication Technology	—	Thailand
2026-10-31 22:25	164.115.248.0/22	Origin added	AS66666	—	AS38450	—
2026-10-31 22:25	164.115.224.0/19	Origin added	AS66666	—	AS38450	—

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.