2001:fb1:b0::/44

Currently announced jointly by AS7470 TRUE INTERNET, AS17552 True Internet Co., in the routed prefix 2001:fb1:b0::/44.

Current ASN: AS7470 AS17552; TRUE INTERNET
Routed prefix: 2001:fb1:b0::/44; Most specific route covering this prefix
ASNs over time: 2; 5 announcement records
RIR allocation: APNIC; Thailand · 2001:fb1::/32

Routing data · Nov 2, 2026, 06:27 UTC

ASN historyEvery routed prefix covering 2001:fb1:b0::/44

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2001:fb1:b0::/44	AS7470	TRUE INTERNET	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b0::/44	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1::/32	AS7470	TRUE INTERNET	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1::/32	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb0::/31	AS7470	TRUE INTERNET	Thailand	Before monitoring	2026-11-02 06:27	Announcing

More specific routes16 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2001:fb1:b0::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b1::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b2::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b3::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b4::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b5::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b6::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b7::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b8::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:b9::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:ba::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:bb::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:bc::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:bd::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:be::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing
2001:fb1:bf::/48	AS17552	True Internet Co.	Thailand	Before monitoring	2026-11-02 06:27	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

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RIR allocation record

Registry: APNIC
Allocated block: 2001:fb1::/32
Country: Thailand
Allocation date: 2012-03-28
Status: allocated

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

How monitoring works

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.