2804:269c:16::/47

No announcement in the global routing table covers this address right now.

Routing data · Nov 11, 2026, 18:22 UTC

ASN historyEvery routed prefix covering 2804:269c:16::/47

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:269c:16::/47	AS47065	Columbia/UFMG PEERING Research Testbed	United States	2026-11-11 02:25	2026-11-11 08:22	Stopped
2804:269c:14::/46	AS47065	Columbia/UFMG PEERING Research Testbed	United States	2026-10-27 06:18	2026-11-10 08:25	Stopped

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
2804:269c:16::/48	AS47065	Columbia/UFMG PEERING Research Testbed	United States	2026-10-23 02:19	2026-10-27 04:22	Stopped
2804:269c:17::/48	AS47065	Columbia/UFMG PEERING Research Testbed	United States	2026-11-11 02:25	2026-11-11 08:22	Stopped

Detected (UTC)	Prefix	Change	ASN	Name	Previous ASN	Country
2026-11-11 10:23	2804:269c:16::/47	Withdrawal	AS47065	Columbia/UFMG PEERING Research Testbed	—	United States
2026-11-11 02:25	2804:269c:16::/47	New announcementNo longer announced	AS47065	Columbia/UFMG PEERING Research Testbed	—	United States
2026-11-10 10:24	2804:269c:14::/46	Withdrawal	AS47065	Columbia/UFMG PEERING Research Testbed	—	United States
2026-10-31 02:18	2804:269c:14::/46	Withdrawal	AS47065	Columbia/UFMG PEERING Research Testbed	—	United States
2026-10-29 22:21	2804:269c:14::/46	Withdrawal	AS47065	Columbia/UFMG PEERING Research Testbed	—	United States
2026-10-27 06:18	2804:269c:14::/46	New announcementNo longer announced	AS47065	Columbia/UFMG PEERING Research Testbed	—	United States

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.