subnet.im

AS274357A J Oliveira Netvelox LTDA

BrazilRegistryLACNIC

As of 14th November 2026, AS274357 (A J Oliveira Netvelox LTDA), a network registered in Brazil with LACNIC, originates 1 IPv4 prefix covering 256 addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 60,037th-largest of the 80,840 networks we see originating IPv4, and the 7,478th-largest of 8,036 in Brazil. It is seen behind 1 upstream network, most often AS270477 (UFO TELECOM COMUNICAÇÃO DE MULTIMIDIA…). None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

1

IPv6 prefixes

3

IPv4 addresses

256

IPv6 /64s

4.3B

Upstream graph

The networks AS274357 is seen behind, one and two hops out, drawn from real AS paths.

AS274357Toward the internet core
Upstream graph for AS274357: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS274357A J Oliveira Netv…This networkAS270477UFO TELECOM COMUN…AS266931NOVELL INTERNETAS267501Equatorial Teleco…

Networks observed one and two hops upstream of AS274357 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS274357
NetworkCountryRelationshipPathsVantage pts
AS270477UFO TELECOM COMUNICAÇÃO DE MULTIMIDIA EIRELIBRPeer264141

Prefixes

The largest blocks AS274357 originates, widest first.

Largest prefixes originated by AS274357
PrefixAddressesVisibility
177.185.109.0/2425678/78
2804:96c0::/324.3B × /6462/64
2804:96c0::/4865.5k × /6462/64
2804:96c0:1::/4865.5k × /6462/64

Routing health

How AS274357'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%4

Propagation

  • Globally propagated90% of full-feed peers or more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 3 prefixes

  • /324.3B × /6433.3%1
  • /4865.5k × /6466.7%2

Recent changes

Announcements that started or stopped since 15th Oct 2026.

No announcement by AS274357 started or stopped in this period.

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