subnet.im

AS52783ALCANS TELECOM LTDA

BrazilRegistryLACNICTypeEyeball

As of 23rd October 2026, AS52783 (ALCANS TELECOM LTDA), an access network registered in Brazil with LACNIC, originates 14 IPv4 prefixes covering 15.6k addresses and 6 IPv6 prefixes. By IPv4 address space that makes it the 8,309th-largest of the 79,666 networks we see originating IPv4, and the 476th-largest of 7,987 in Brazil. It is seen behind 4 upstream networks, most often AS16735 (Algar Telecom) and AS3356 (Lumen (Level 3)), and in front of 13 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

14

IPv6 prefixes

6

IPv4 addresses

15.6k

IPv6 /64s

4.3B

Upstream graph

The networks AS52783 is seen behind, one and two hops out, drawn from real AS paths.

AS52783Toward the internet core
Upstream graph for AS52783: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS52783ALCANS TELECOM LT…This networkAS3356Lumen (Level 3)AS16735Algar TelecomAS52468UFINET PANAMA S.A.AS264409Huge NetworksAS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS6762Telecom Italia Sp…AS1299Arelion (fka. Tel…AS22356Durand do Brasil …AS3257GTT Communication…AS37468Angola Cables

Networks observed one and two hops upstream of AS52783 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

38

adjacent networks

Upstreams
411%
Peers
2155%
Downstreams
1334%

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

Upstreams of AS52783
NetworkCountryRelationshipPathsVantage pts
AS16735Algar TelecomBRPeer3,665141
AS3356Lumen (Level 3)USPeer487140
AS52468UFINET PANAMA S.A.PAPeer7777
AS264409Huge NetworksBRPeer6464

Prefixes

The largest blocks AS52783 originates, widest first.

Largest prefixes originated by AS52783
PrefixAddressesVisibility
177.200.64.0/204.1k77/77
177.52.80.0/212k77/77
177.74.184.0/212k77/77
131.255.116.0/221k77/77
138.122.132.0/221k77/77
138.255.192.0/221k77/77
170.78.116.0/221k77/77
170.254.76.0/221k77/77
138.122.132.0/2351277/77
138.122.134.0/2351277/77

Routing health

How AS52783'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%20
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%20
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 14 prefixes

IPv6 — 6 prefixes

  • /324.3B × /6416.7%1
  • /4016.8M × /6416.7%1
  • /4865.5k × /6466.7%4

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

  • Withdrawn2804:10f8:9006::/4820th Oct 2026
  • Withdrawn2804:10f8:f000::/4820th Oct 2026
  • Announced2804:10f8:e000::/4826th Sept 2026
  • Withdrawn2804:10f8:e000::/4826th Sept 2026

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