Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS21574

Announcement observedUnknown RIR

AS21574 - Century Telecom Ltda · AS21574

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/16/2026, 12:51:15Snapshot expired

View network topology RDAP registration

ASN: AS21574
Registration country: Registration country pending sync
Name: AS21574 - Century Telecom Ltda
Abbreviation: AS21574
Registration date: Not recorded
Status: Announcement observed
RIR: Not recorded

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
168.227.200.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
186.249.224.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
187.1.176.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
187.1.176.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
187.1.178.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
200.169.0.0/20BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: AS21574 - Century Telecom Ltda
RIR: Not recorded
Registration country: Registration country pending sync
Registration date: Not recorded
Abuse contact: Not recorded

Snapshot trend

10/16/2026, 12:51:156 v41 v677 Upstream · 165 Uncertain

10/14/2026, 13:52:476 v41 v676 Upstream · 169 Uncertain

10/13/2026, 13:12:256 v41 v674 Upstream · 171 Uncertain

10/11/2026, 16:46:276 v41 v674 Upstream · 172 Uncertain

10/10/2026, 01:48:496 v41 v675 Upstream · 168 Uncertain

10/8/2026, 22:46:276 v41 v679 Upstream · 168 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing