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AS61591WESTLINK TECNOLOGIA E COMUNICACAO LTDA. - ME

BrazilRegistryLACNICTypeEyeball

As of 25th October 2026, AS61591 (WESTLINK TECNOLOGIA E COMUNICACAO LTDA.…), an access network registered in Brazil with LACNIC, originates 21 IPv4 prefixes covering 9.2k addresses and 19 IPv6 prefixes. By IPv4 address space that makes it the 10,989th-largest of the 79,675 networks we see originating IPv4, and the 753rd-largest of 7,990 in Brazil. It is seen behind 10 upstream networks, most often AS3356 (Lumen (Level 3)) and AS6939 (Hurricane Electric LLC), and in front of 8 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 25% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

21

IPv6 prefixes

19

IPv4 addresses

9.2k

IPv6 /64s

12.9B

Upstream graph

The networks AS61591 is seen behind, one and two hops out, drawn from real AS paths.

AS61591Toward the internet core
Upstream graph for AS61591: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS61591WESTLINK TECNOLOG…This networkAS3356Lumen (Level 3)AS6939Hurricane Electri…AS14537Continent 8 LLCAS35280F5 Networks SARLAS272713CDN Star LtdaAS3549Lumen (fka. Globa…AS2914NTT America, Inc.AS20130Depaul UniversityAS132337AxclusiveAS1299Arelion (fka. Tel…AS32590Valve CorporationAS999CORIX NETWORKS

Networks observed one and two hops upstream of AS61591 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

80

adjacent networks

Upstreams
1013%
Peers
6278%
Downstreams
810%

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

Upstreams of AS61591
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer5,141119
AS6939Hurricane Electric LLCUSPeer72132
AS272713CDN Star LtdaBRPeer2337
AS14537Continent 8 LLCUSPeer1194
AS35280F5 Networks SARLFRPeer1005
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer862
AS1000LINK AMERICANUSPeer832
AS32590Valve CorporationUSPeer782
AS137409GSL Networks Pty LTDAUPeer443
AS263009FORTE TELECOM LTDA.BRPeer103

Prefixes

All 40

The largest blocks AS61591 originates, widest first.

Largest prefixes originated by AS61591
PrefixAddressesVisibility
45.237.72.0/221k76/76
138.97.64.0/221k76/76
170.247.40.0/221k76/76
45.237.72.0/2351276/76
45.237.74.0/2351276/76
138.97.64.0/2351276/76
138.97.66.0/2351276/76
170.247.40.0/2351276/76
170.247.42.0/2351276/76
45.237.72.0/242562/76

Routing health

How AS61591'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%40
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more25.0%10
  • Partially propagated40% to 90%5.0%2
  • Seen by few peersUnder 40%70.0%28

Prefix sizes

IPv4 — 21 prefixes

IPv6 — 19 prefixes

  • /324.3B × /645.3%1
  • /332.1B × /6410.5%2
  • /36268M × /6484.2%16

Recent changes

Announcements that started or stopped since 25th Sept 2026.

No announcement by AS61591 started or stopped in this period.

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