subnet.im

AS267211Fournet One Serviços de Comunicação e Informática

BrazilRegistryLACNIC

As of 11th November 2026, AS267211 (Fournet One Serviços de Comunicação e…), a network registered in Brazil with LACNIC, originates 7 IPv4 prefixes covering 3.1k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 20,474th-largest of the 80,743 networks we see originating IPv4, and the 1,832nd-largest of 8,031 in Brazil. It is seen behind 2 upstream networks, most often AS267373 (ÁGIL TECOMUNICACOES LTDA) and AS263009 (FORTE TELECOM LTDA.), and in front of 1 downstream network. 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

7

IPv6 prefixes

3

IPv4 addresses

3.1k

IPv6 /64s

8.6B

Upstream graph

The networks AS267211 is seen behind, one and two hops out, drawn from real AS paths.

AS267211Toward the internet core
Upstream graph for AS267211: 5 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS267211Fournet One Servi…This networkAS263009FORTE TELECOM LTD…AS267373ÁGIL TECOMUNICACO…AS174Cogent Communicat…AS3356Lumen (Level 3)AS52772SJNET TELECOMUNIC…

Networks observed one and two hops upstream of AS267211 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

6

adjacent networks

Upstreams
233%
Peers
350%
Downstreams
117%

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

Upstreams of AS267211
NetworkCountryRelationshipPathsVantage pts
AS267373ÁGIL TECOMUNICACOES LTDABRPeer216109
AS263009FORTE TELECOM LTDA.BRPeer2929

Prefixes

The largest blocks AS267211 originates, widest first.

Largest prefixes originated by AS267211
PrefixAddressesVisibility
45.231.120.0/221k75/76
45.231.120.0/235121/76
45.231.122.0/2351224/76
45.231.120.0/242564/76
45.231.121.0/242564/76
45.231.122.0/242563/76
45.231.123.0/242563/76
2804:49f8::/324.3B × /6434/63
2804:49f8::/332.1B × /6434/63
2804:49f8:8000::/332.1B × /6434/63

Routing health

How AS267211'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%10
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more10.0%1
  • Partially propagated40% to 90%30.0%3
  • Seen by few peersUnder 40%60.0%6

Prefix sizes

IPv4 — 7 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /332.1B × /6466.7%2

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.