2804:1eb8:f000::/39

Currently announced by AS52564 Biazi Telecom, in the routed prefix 2804:1eb8:f000::/39.

Current ASN: AS52564; Biazi Telecom
Routed prefix: 2804:1eb8:f000::/39; Most specific route covering this prefix
ASNs over time: 1; 3 announcement records
RIR allocation: LACNIC; Brazil · 2804:1eb8::/32

Routing data · Nov 2, 2026, 04:24 UTC

ASN historyEvery routed prefix covering 2804:1eb8:f000::/39

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:1eb8:f000::/39	AS52564	Biazi Telecom	Brazil	Before monitoring	2026-11-02 04:24	Announcing
2804:1eb8:c000::/34	AS52564	Biazi Telecom	Brazil	2026-10-26 06:21	2026-10-26 08:22	Stopped
2804:1eb8::/32	AS52564	Biazi Telecom	Brazil	Before monitoring	2026-11-02 04:24	Announcing

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:1eb8:f0b0::/44	AS52564	Biazi Telecom	Brazil	Before monitoring	2026-11-02 04:24	Announcing
2804:1eb8:f0c0::/44	AS52564	Biazi Telecom	Brazil	Before monitoring	2026-11-02 04:24	Announcing

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-10-26 10:20	2804:1eb8:c000::/34	Withdrawal	AS52564	Biazi Telecom	—	Brazil
2026-10-26 06:21	2804:1eb8:c000::/34	New announcementNo longer announced	AS52564	Biazi Telecom	—	Brazil

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.