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AS1251FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO

BrazilRegistryLACNIC

As of 22nd October 2026, AS1251 (FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO…), a network registered in Brazil with LACNIC, originates 41 IPv4 prefixes covering 133k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 1,873rd-largest of the 79,663 networks we see originating IPv4, and the 54th-largest of 7,986 in Brazil. It is seen behind 11 upstream networks, most often AS20080 (Florida International University) and AS15830 (Equinix, Inc.), and in front of 14 downstream networks. 79% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 95% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

41

IPv6 prefixes

1

IPv4 addresses

133k

IPv6 /64s

4.3B

Upstream graph

The networks AS1251 is seen behind, one and two hops out, drawn from real AS paths.

AS1251Toward the internet core
Upstream graph for AS1251: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1251FUNDAÇÃO DE AMPAR…This networkAS1000LINK AMERICANAS6939Hurricane Electri…AS15830Equinix, Inc.AS20080Florida Internati…AS266213PLANETCLICK TELEC…AS6453TATA Communicatio…AS20130Depaul UniversityAS132337AxclusiveAS1299Arelion (fka. Tel…AS3356Lumen (Level 3)AS2914NTT America, Inc.AS6762Telecom Italia Sp…

Networks observed one and two hops upstream of AS1251 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

96

adjacent networks

Upstreams
1111%
Peers
7174%
Downstreams
1415%

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

Upstreams of AS1251
NetworkCountryRelationshipPathsVantage pts
AS20080Florida International UniversityUSPeer2,380131
AS15830Equinix, Inc.NLPeer2,04598
AS6939Hurricane Electric LLCUSPeer29712
AS1000LINK AMERICANUSPeer501
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer502
AS32590Valve CorporationUSPeer482
AS35280F5 Networks SARLFRPeer482
AS14537Continent 8 LLCUSPeer481
AS28222INSTITUTO NACIONAL DE PESQUISAS ESPACIAISBRAdjacent217
AS1916RNP - Rede Nacional de Ensino e PesquisaBRPeer1611

Prefixes

All 42

The largest blocks AS1251 originates, widest first.

Largest prefixes originated by AS1251
PrefixAddressesVisibility
143.108.0.0/1665.5k77/77
200.136.32.0/198.2k77/77
200.136.64.0/198.2k77/77
200.18.48.0/204.1k77/77
200.18.240.0/204.1k77/77
200.19.80.0/204.1k77/77
200.136.16.0/204.1k77/77
200.136.96.0/204.1k77/77
200.136.160.0/204.1k77/77
200.144.32.0/204.1k77/77

Routing health

How AS1251'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

  • Valid78.6%33
  • Invalid0.0%0
  • No ROA21.4%9

Propagation

  • Globally propagated90% of full-feed peers or more95.2%40
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%4.8%2

Prefix sizes

IPv4 — 41 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

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