191.37.48.0/20

Currently announced by AS263347 CEDNET PROVEDOR DE INTERNET, in the routed prefix 191.37.48.0/20.

Current ASN: AS263347; CEDNET PROVEDOR DE INTERNET
Routed prefix: 191.37.48.0/20; Most specific route covering this prefix
ASNs over time: 1; 2 announcement records
RIR allocation: LACNIC; Brazil · 191.37.32.0/19

Routing data · Nov 2, 2026, 00:27 UTC

ASN historyEvery routed prefix covering 191.37.48.0/20

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
191.37.48.0/20	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.32.0/19	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing

More specific routes23 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
191.37.48.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.48.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.50.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.52.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.54.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.56.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.58.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.60.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.62.0/23	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	Before monitoring	2026-11-02 00:27	Announcing
191.37.49.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.50.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.51.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.52.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.53.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.54.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.55.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.56.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.57.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.58.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.59.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.60.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.61.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped
191.37.62.0/24	AS263347	CEDNET PROVEDOR DE INTERNET	Brazil	2026-10-22 18:21	2026-10-30 08:23	Stopped

Change logAll changes

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

Look up another address

RIR allocation record

Registry: LACNIC
Allocated block: 191.37.32.0/19
Country: Brazil
Allocation date: 2014-03-14
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.