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AS274389F-NET MASTER LTDA

BrazilRegistryLACNIC

As of 27th September 2026, AS274389 (F-NET MASTER LTDA), a network registered in Brazil with LACNIC, originates 1 IPv4 prefix covering 256 addresses and 7 IPv6 prefixes. By IPv4 address space that makes it the 59,127th-largest of the 79,525 networks we see originating IPv4, and the 7,428th-largest of 7,983 in Brazil. It is seen behind 3 upstream networks, most often AS269530 (ACCESSNET TELECOMUNICAÇÕES EIRELI) and AS6939 (Hurricane Electric LLC). 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

1

IPv6 prefixes

7

IPv4 addresses

256

IPv6 /64s

12.9B

Upstream graph

The networks AS274389 is seen behind, one and two hops out, drawn from real AS paths.

AS274389Toward the internet core
Upstream graph for AS274389: 8 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS274389F-NET MASTER LTDAThis networkAS6939Hurricane Electri…AS262355VSX NetworksAS269530ACCESSNET TELECOM…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS57463NetIX Communicati…AS266213PLANETCLICK TELEC…AS262503WIKI TELECOMUNICA…

Networks observed one and two hops upstream of AS274389 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

21

adjacent networks

Upstreams
314%
Peers
1886%
Downstreams
00%

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

Upstreams of AS274389
NetworkCountryRelationshipPathsVantage pts
AS269530ACCESSNET TELECOMUNICAÇÕES EIRELIBRPeer265139
AS6939Hurricane Electric LLCUSPeer10129
AS262355VSX NetworksBRPeer41

Prefixes

The largest blocks AS274389 originates, widest first.

Largest prefixes originated by AS274389
PrefixAddressesVisibility
167.148.82.0/2425681/81
2804:972c::/324.3B × /6463/64
2804:972c::/332.1B × /6463/64
2804:972c:8000::/332.1B × /6463/64
2804:972c::/341.1B × /6425/64
2804:972c:4000::/341.1B × /6425/64
2804:972c:8000::/341.1B × /6425/64
2804:972c:c000::/341.1B × /6425/64

Routing health

How AS274389'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%8
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more50.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%50.0%4

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 7 prefixes

  • /324.3B × /6414.3%1
  • /332.1B × /6428.6%2
  • /341.1B × /6457.1%4

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS274389 started or stopped in this period.

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