Autonomous system
AS28573 Claro NXT Telecomunicacoes Ltda
Residential LACNIC
Summary
Claro (Brazil)
isp eyeball broadband
Claro Brasil (Claro NXT Telecomunicacoes) — a large Brazilian mobile and cable operator, part of América Móvil.
What it's used for
- Mobile and fixed (cable/fibre) broadband for a large Brazilian subscriber base.
Notable
- One of Brazil's biggest "eyeball" networks, competing with Vivo and TIM.
- Part of América Móvil (the Carlos Slim group), which runs Claro across much of Latin America.
Interesting
- Claro Brasil absorbed the cable operator NET, giving it a big fixed-broadband footprint alongside its mobile network.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 18 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.222.237 |
| IX.br (PTT.br) Fortaleza | Fortaleza, Brazil | 45.68.72.13 |
| IX.br (PTT.br) Porto Alegre | Porto Alegre, Brazil | 177.52.38.11 |
| IX.br (PTT.br) Brasília | Brasília, Brazil | 45.184.144.45 |
| IX.br (PTT.br) Florianópolis | Florianópolis, Brazil | 200.219.141.5 |
| IX.br (PTT.br) Belo Horizonte | Belo Horizonte, Brazil | 200.219.139.106 |
| IX.br (PTT.br) Vitória | Vitória, Brazil | 187.16.194.28 |
| IX.br (PTT.br) Goiânia | Goiânia, Brazil | 200.192.111.4 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 682 prefixes · 9.96M addresses IPv6 1,123 prefixes
| Country | Name | Prefixes |
|---|---|---|
| BR | Brazil | 1,805 |
Registry
Allocation record
- Registry
- LACNIC
- Handle
28573- Registry name
- ASN28573
- Registrant
- Claro NXT Telecomunicacoes Ltda
- Abuse contact
- Grupo de Segurança Vírtua
- Registered
- 2003-11-27
- Last changed
- 2023-01-05
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 99.9% valid · 3,308 valid, 4 with no ROA
- ROAs
- 60 authorising AS28573
- ASPA
- no ASPA record
- IRR
- 99.9% registered · 3,309 of 3,312 announcements
- Route objects
- 17,268 naming AS28573
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,771 prefixes, as published 2026-10-15. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere