asn.dev

Autonomous system

AS14571 Oi S.A. - Em Recuperacao Judicial

Hosting LACNIC Content

IPv4 addresses 30.21K 18 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BR
Exchanges 1 recorded by PCH
Upstreams 1 1 downstream
Flagged prefixes 0 none

Summary

Oi

Brazil · AI-generated

isp telecom infrastructure

The registry records a court proceeding in the holder's own name, and the address space underneath is registered to other companies.

What it's used for

  • A Brazilian carrier's network. 59,136 addresses across 14 IPv4 prefixes, with three observed BGP neighbours and no IPv6 announced.

Notable

  • The registry holder is Oi S.A. - Em Recuperacao Judicial.
  • Every prefix that resolved is registered to ATIVA TELECOM LTDA, except one, 187.31.22.0/23, registered to MEGA INFRA SOLUCOES EM INFRAESTRUTURA LTDA.
  • The netnames are bare numbers: 559062, 559047, 559061 and 558365.
  • All 14 prefixes sit inside 187.31, from a /17 down to several /24s.
  • Six of the twelve registry lookups failed outright.
  • Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

  • The holder string carries a legal status rather than a trading name. When a company enters court supervision the registry entry gets amended like any other corporate record, so the routing database ends up documenting the bankruptcy alongside the addresses.
  • The AS still carries one company's name while the blocks underneath it carry another's. Address space moves faster than AS registrations do, and the two records disagree for years afterwards.
  • Numeric netnames are registry ticket numbers, unique and uninformative. They identify the paperwork rather than the network.
  • Half the lookups failing in one pack is a rate far above the usual, which is a property of the registry service that day rather than of the blocks themselves.

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

Full topology · Graph

Internet exchanges

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
IX.br (PTT.br) São PauloSão Paulo, Brazil187.16.216.201

Transit providers

1 upstream, 1 downstream and 5 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS29987Sinfony6, LLC380

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 18 prefixes · 30.21K addresses IPv6 0 prefixes

CountryNamePrefixes
BRBrazil18

Registry

Allocation record

LACNIC · via Atlas (registry + RDAP)
Registry
LACNIC
Handle
14571
Registry name
ASN14571
Registrant
Oi S.A. - Em Recuperação Judicial
Abuse contact
CSIRT OI
Registered
2000-01-13
Last changed
2024-01-03
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
Oi Internet S/A
Network type
Content
Scope
South America
Traffic ratio
Heavy Outbound
Peering policy
Open
Present at
1 exchanges

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 6 with no ROA 26 RPKI-invalid
ROAs
0 authorising AS14571
ASPA
no ASPA record
IRR
0% registered · 0 of 32 announcements 1 other origin
Route objects
0 naming AS14571

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

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 1,779 prefixes, as published 2026-10-23. 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

Cross-check