subnet.im

AS53237Telebras (TELECOMUNICACOES BRASILEIRAS S.A)

BrazilRegistryLACNICTypeCarrier

As of 27th September 2026, AS53237 (Telebras (TELECOMUNICACOES BRASILEIRAS…), a transit carrier registered in Brazil with LACNIC, originates 38 IPv4 prefixes covering 215k addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 1,256th-largest of the 79,525 networks we see originating IPv4, and the 31st-largest of 7,983 in Brazil. It is seen behind 15 upstream networks, most often AS267613 (ELETRONET S.A.) and AS28126 (BRISANET SERVICOS DE TELECOMUNICACOES…), and in front of 16 downstream networks. None of its announcements have a valid RPKI ROA. 51% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

38

IPv6 prefixes

17

IPv4 addresses

215k

IPv6 /64s

6.2B

Upstream graph

The networks AS53237 is seen behind, one and two hops out, drawn from real AS paths.

AS53237Toward the internet core
Upstream graph for AS53237: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS53237Telebras (TELECOM…This networkAS6939Hurricane Electri…AS28126BRISANET SERVICOS…AS28178Nwi Telecom / Net…AS61832Giga+ EmpresasAS267613ELETRONET S.A.AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS16735Algar TelecomAS37468Angola CablesAS3356Lumen (Level 3)AS13786Seaborn (Seabras …

Networks observed one and two hops upstream of AS53237 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

107

adjacent networks

Upstreams
1514%
Peers
7671%
Downstreams
1615%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS53237
NetworkCountryRelationshipPathsVantage pts
AS267613ELETRONET S.A.BRPeer1,683121
AS28126BRISANET SERVICOS DE TELECOMUNICACOES S.ABRPeer1,301140
AS6939Hurricane Electric LLCUSPeer71033
AS61832Giga+ EmpresasBRPeer565128
AS28178Nwi Telecom / Networld LTDABRPeer47068
AS52468UFINET PANAMA S.A.PAPeer27268
AS28598MOBBRPeer21289
AS14537Continent 8 LLCUSPeer1694
AS35280F5 Networks SARLFRPeer1485
AS32590Valve CorporationUSPeer1102

Prefixes

All 55

The largest blocks AS53237 originates, widest first.

Largest prefixes originated by AS53237
PrefixAddressesVisibility
177.14.64.0/198.2k81/81
177.14.96.0/198.2k81/81
177.14.128.0/198.2k81/81
177.14.160.0/198.2k80/81
177.14.192.0/198.2k81/81
177.14.224.0/198.2k81/81
177.15.0.0/198.2k81/81
177.15.32.0/198.2k81/81
177.15.64.0/198.2k81/81
177.15.96.0/198.2k81/81

Routing health

How AS53237's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%55

Propagation

  • Globally propagated90% of full-feed peers or more50.9%28
  • Partially propagated40% to 90%16.4%9
  • Seen by few peersUnder 40%32.7%18

Prefix sizes

IPv4 — 38 prefixes

IPv6 — 17 prefixes

  • /35537M × /6441.2%7
  • /36268M × /6452.9%9
  • /4865.5k × /645.9%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Withdrawn2804:300:2000::/5221st Sept 2026

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.