2804:29fc:500::/40

Currently announced jointly by AS264049 TELECOMUNICACOES ALARCAO E FERNANDES LTDA - ME, AS268554 CDM TELECOM, in the routed prefix 2804:29fc:500::/40.

Current ASN: AS264049 AS268554; TELECOMUNICACOES ALARCAO E FERNANDES LTDA - ME
Routed prefix: 2804:29fc:500::/40; Most specific route covering this prefix
ASNs over time: 2; 4 announcement records
RIR allocation: LACNIC; Brazil · 2804:29fc::/32

Routing data · Nov 8, 2026, 10:26 UTC

ASN historyEvery routed prefix covering 2804:29fc:500::/40

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:29fc:500::/40	AS264049	TELECOMUNICACOES ALARCAO E FERNANDES LTDA - ME	Brazil	Before monitoring	2026-11-08 10:26	Announcing
2804:29fc:500::/40	AS268554	CDM TELECOM	Brazil	Before monitoring	2026-11-08 10:26	Announcing
2804:29fc::/32	AS264049	TELECOMUNICACOES ALARCAO E FERNANDES LTDA - ME	Brazil	Before monitoring	2026-11-08 10:26	Announcing
2804:29fc::/32	AS268554	CDM TELECOM	Brazil	Before monitoring	2026-11-08 10:26	Announcing

More specific routes0 total

No more specific routes inside this prefix.

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: LACNIC
Allocated block: 2804:29fc::/32
Country: Brazil
Allocation date: 2015-09-28
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.