2804:38c4::/32

No route covers the whole prefix right now; more specific routes inside it are announced.

Current ASN: —; Not announced
Routed prefix: —; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: LACNIC; Brazil · 2804:38c4::/32

Routing data · Nov 2, 2026, 00:27 UTC

ASN historyEvery routed prefix covering 2804:38c4::/32

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:38c4::/32	AS266500	SURF TELECOM S.A.	Brazil	2026-10-28 14:20	2026-10-29 00:23	Stopped

More specific routes20 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:38c4::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:2::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:3::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:4::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:5::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:6::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:7::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:8::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:9::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:10::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:11::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:12::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:13::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:14::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:15::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:16::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:17::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:18::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:19::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing
2804:38c4:20::/48	AS266500	SURF TELECOM S.A.	Brazil	Before monitoring	2026-11-02 00:27	Announcing

Change logAll changes

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-10-29 02:22	2804:38c4::/32	Withdrawal	AS266500	SURF TELECOM S.A.	—	Brazil
2026-10-28 14:20	2804:38c4::/32	New announcementNo longer announced	AS266500	SURF TELECOM S.A.	—	Brazil

Look up another address

RIR allocation record

Registry: LACNIC
Allocated block: 2804:38c4::/32
Country: Brazil
Allocation date: 2017-01-16
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.