subnet.im

AS266400Ferenz Networks

BrazilRegistryLACNIC

As of 27th September 2026, AS266400 (Ferenz Networks), a network registered in Brazil with LACNIC, originates 31 IPv4 prefixes covering 11.5k addresses and 13 IPv6 prefixes. By IPv4 address space that makes it the 9,780th-largest of the 79,525 networks we see originating IPv4, and the 633rd-largest of 7,983 in Brazil. It is seen behind 13 upstream networks, most often AS3356 (Lumen (Level 3)) and AS37468 (Angola Cables), and in front of 5 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

31

IPv6 prefixes

13

IPv4 addresses

11.5k

IPv6 /64s

12.9B

Upstream graph

The networks AS266400 is seen behind, one and two hops out, drawn from real AS paths.

AS266400Toward the internet core
Upstream graph for AS266400: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS266400Ferenz NetworksThis networkAS3356Lumen (Level 3)AS6939Hurricane Electri…AS14537Continent 8 LLCAS37468Angola CablesAS61624ISPSHIELD (InfNOC…AS3549Lumen (fka. Globa…AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS2914NTT America, Inc.AS3257GTT Communication…

Networks observed one and two hops upstream of AS266400 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

80

adjacent networks

Upstreams
1316%
Peers
6278%
Downstreams
56%

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

Upstreams of AS266400
NetworkCountryRelationshipPathsVantage pts
AS3356Lumen (Level 3)USPeer3,028122
AS37468Angola CablesAOPeer1,26369
AS6939Hurricane Electric LLCUSPeer46223
AS61624ISPSHIELD (InfNOC Tecnologia)BRPeer249110
AS14537Continent 8 LLCUSPeer723
AS32590Valve CorporationUSPeer722
AS16735Algar TelecomBRPeer6416
AS35280F5 Networks SARLFRPeer562
AS1000LINK AMERICANUSPeer562
AS266213PLANETCLICK TELECOMUNICACOES LTDABRPeer552

Prefixes

All 44

The largest blocks AS266400 originates, widest first.

Largest prefixes originated by AS266400
PrefixAddressesVisibility
45.224.128.0/221k81/81
170.81.40.0/221k81/81
31.57.174.0/2351281/81
45.224.128.0/2351281/81
45.224.130.0/2351281/81
74.1.74.0/2351281/81
74.1.84.0/2351281/81
170.81.40.0/2351281/81
170.81.42.0/2351281/81
181.214.128.0/2351281/81

Routing health

How AS266400'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%44
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%44
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 31 prefixes

IPv6 — 13 prefixes

  • /324.3B × /647.7%1
  • /332.1B × /6415.4%2
  • /341.1B × /6430.8%4
  • /4016.8M × /6415.4%2
  • /4865.5k × /6430.8%4

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS266400 started or stopped in this period.

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