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AS53181Avanca Telecom e Servicos LTDA

BrazilRegistryLACNICTypeCarrier

As of 11th November 2026, AS53181 (Avanca Telecom e Servicos LTDA), a transit carrier registered in Brazil with LACNIC, originates 44 IPv4 prefixes covering 20.5k addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 7,057th-largest of the 80,743 networks we see originating IPv4, and the 337th-largest of 8,031 in Brazil. It is seen behind 15 upstream networks, most often AS13786 (Seaborn (Seabras USA, LLC)) and AS37468 (Angola Cables), and in front of 156 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 10% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

44

IPv6 prefixes

17

IPv4 addresses

20.5k

IPv6 /64s

9.6B

Upstream graph

The networks AS53181 is seen behind, one and two hops out, drawn from real AS paths.

AS53181Toward the internet core
Upstream graph for AS53181: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS53181Avanca Telecom e …This networkAS13786Seaborn (Seabras …AS14537Continent 8 LLCAS32590Valve CorporationAS37468Angola CablesAS266213PLANETCLICK TELEC…AS22356Durand do Brasil …AS2914NTT America, Inc.AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS3257GTT Communication…AS262355VSX Networks

Networks observed one and two hops upstream of AS53181 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

385

adjacent networks

Upstreams
154%
Peers
21456%
Downstreams
15641%

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

Upstreams of AS53181
NetworkCountryRelationshipPathsVantage pts
AS13786Seaborn (Seabras USA, LLC)USPeer37,618138
AS37468Angola CablesAOPeer12,723130
AS14537Continent 8 LLCUSPeer1,1354
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer9032
AS32590Valve CorporationUSPeer8072
AS35280F5 Networks SARLFRPeer6986
AS1000LINK AMERICANUSPeer6412
AS137409GSL Networks Pty LTDAUPeer4864
AS52863UPX TECNOLOGIA LTDABRPeer30576
AS265944BR UP TELECOMBRPeer1616

Prefixes

All 61

The largest blocks AS53181 originates, widest first.

Largest prefixes originated by AS53181
PrefixAddressesVisibility
191.241.64.0/204.1k76/76
201.33.160.0/204.1k76/76
45.164.112.0/221k76/76
138.204.64.0/221k76/76
45.164.112.0/2425610/76
45.164.113.0/2425610/76
45.164.114.0/2425610/76
45.164.115.0/2425610/76
138.204.64.0/2425610/76
138.204.65.0/2425610/76

Routing health

How AS53181'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

  • Valid100.0%61
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more9.8%6
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%90.2%55

Prefix sizes

IPv4 — 44 prefixes

IPv6 — 17 prefixes

  • /324.3B × /6411.8%2
  • /3867.1M × /6488.2%15

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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