177.204.0.0/14

Currently announced by AS18881 TELEFÔNICA BRASIL AS18881, in the routed prefix 177.204.0.0/14.

Current ASN: AS18881; TELEFÔNICA BRASIL AS18881
Routed prefix: 177.204.0.0/14; Most specific route covering this prefix
ASNs over time: 1; 1 announcement record
RIR allocation: LACNIC; Brazil · 177.204.0.0/14

Routing data · Nov 2, 2026, 02:24 UTC

ASN historyEvery routed prefix covering 177.204.0.0/14

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
177.204.0.0/14	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing

More specific routes96 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
177.204.0.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.8.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.16.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.20.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.24.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.32.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.40.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.48.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.64.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.68.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.72.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.80.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.84.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.88.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.96.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.104.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.112.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.128.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.144.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.152.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.160.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.164.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.168.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.192.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.204.224.0/19	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.8.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.16.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.32.0/19	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.64.0/18	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.128.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.144.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.152.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.156.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.160.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.176.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.184.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.192.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.208.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.216.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.240.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.205.248.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.0.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.4.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.8.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.16.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.24.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.28.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.32.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.40.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.64.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.72.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.80.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.80.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.84.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.88.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.96.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.104.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.112.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.128.0/19	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.160.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.176.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.200.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	2026-10-28 02:20	2026-11-02 02:24	Announcing
177.206.208.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.224.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.206.240.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.8.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.16.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.48.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.64.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.80.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.88.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.96.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.112.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.128.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.128.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.144.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.164.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.168.0/21	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.176.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.180.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.184.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.188.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.192.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.196.0/23	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.198.0/23	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.200.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.204.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.208.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.212.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.216.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.220.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.224.0/20	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.240.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.244.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.248.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing
177.207.252.0/22	AS18881	TELEFÔNICA BRASIL AS18881	Brazil	Before monitoring	2026-11-02 02:24	Announcing

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: 177.204.0.0/14
Country: Brazil
Allocation date: 2012-09-25
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.