subnet.im

AS263099STIW Sistema de Telecom. Inf e Wireless LTDA

BrazilRegistryLACNICTypeEyeball

As of 25th October 2026, AS263099 (STIW Sistema de Telecom. Inf e Wireless…), an access network registered in Brazil with LACNIC, originates 19 IPv4 prefixes covering 9k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 11,276th-largest of the 79,675 networks we see originating IPv4, and the 784th-largest of 7,990 in Brazil. It is seen behind 9 upstream networks, most often AS53181 (Avanca Telecom e Servicos LTDA) and AS263903 (INFORBARRA TELECOM), and in front of 15 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 50% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

19

IPv6 prefixes

1

IPv4 addresses

9k

IPv6 /64s

4.3B

Upstream graph

The networks AS263099 is seen behind, one and two hops out, drawn from real AS paths.

AS263099Toward the internet core
Upstream graph for AS263099: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS263099STIW Sistema de T…This networkAS6939Hurricane Electri…AS35280F5 Networks SARLAS53181Avanca Telecom e …AS263903INFORBARRA TELECOMAS269096NORTH TECNOLOGIAAS20130Depaul UniversityAS132337AxclusiveAS1299Arelion (fka. Tel…AS13786Seaborn (Seabras …AS37468Angola CablesAS3356Lumen (Level 3)AS7195EdgeUno

Networks observed one and two hops upstream of AS263099 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

77

adjacent networks

Upstreams
912%
Peers
5369%
Downstreams
1519%

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

Upstreams of AS263099
NetworkCountryRelationshipPathsVantage pts
AS53181Avanca Telecom e Servicos LTDABRPeer99587
AS263903INFORBARRA TELECOMBRPeer919105
AS269096NORTH TECNOLOGIABRPeer72082
AS6939Hurricane Electric LLCUSPeer30512
AS35280F5 Networks SARLFRPeer604
AS1000LINK AMERICANUSPeer452
AS262355VSX NetworksBRPeer101
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer31
AS32590Valve CorporationUSPeer31

Prefixes

The largest blocks AS263099 originates, widest first.

Largest prefixes originated by AS263099
PrefixAddressesVisibility
186.225.176.0/212k76/76
143.137.156.0/221k76/76
143.137.156.0/2351276/76
143.137.158.0/2351276/76
186.225.176.0/2351276/76
186.225.178.0/2351276/76
186.225.180.0/2351276/76
186.225.182.0/2351276/76
143.137.156.0/2425617/76
143.137.157.0/2425617/76

Routing health

How AS263099'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 more50.0%10
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%50.0%10

Prefix sizes

IPv4 — 19 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 25th Sept 2026.

No announcement by AS263099 started or stopped in this period.

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