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AS57866Fusix Networks B.V.

NetherlandsRegistryRIPE NCCTypeCarrier

As of 26th September 2026, AS57866 (Fusix Networks B.V.), a transit carrier registered in the Netherlands with RIPE NCC, originates 16 IPv4 prefixes covering 9.7k addresses and 5 IPv6 prefixes. By IPv4 address space that makes it the 10,672nd-largest of the 79,480 networks we see originating IPv4, and the 161st-largest of 1,023 in the Netherlands. It is seen behind 14 upstream networks, most often AS8283 (Netwerkvereniging Coloclue) and AS3491 (PCCW Global (HK) Ltd.), and in front of 158 downstream networks. 67% 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, and 1 prefix is also originated by another network.

At a glance

IPv4 prefixes

16

IPv6 prefixes

5

IPv4 addresses

9.7k

IPv6 /64s

107B

Upstream graph

The networks AS57866 is seen behind, one and two hops out, drawn from real AS paths.

AS57866Toward the internet core
Upstream graph for AS57866: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS57866Fusix Networks B.…This networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS3491PCCW Global (HK) …AS6453TATA Communicatio…AS8283Netwerkvereniging…AS13030Init7 (Switzerlan…AS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS8220COLTAS35280F5 Networks SARLAS8298IPng Networks GmbHAS49127Asimo Networks B.…

Networks observed one and two hops upstream of AS57866 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

336

adjacent networks

Upstreams
144%
Peers
16449%
Downstreams
15847%

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

Upstreams of AS57866
NetworkCountryRelationshipPathsVantage pts
AS8283Netwerkvereniging ColoclueNLPeer7,0412
AS3491PCCW Global (HK) Ltd.HKPeer6,23354
AS6453TATA Communications (America) IncUSPeer4,56038
AS1299Arelion (fka. Telia Carrier)SEPeer4,18056
AS2914NTT America, Inc.USPeer4,05353
AS6830Liberty Global Europe Holding B.V.EUPeer2,288107
AS3356Lumen (Level 3)USPeer2,11233
AS9002RETN LimitedGBPeer1,6659
AS25091IP-Max SACHPeer3773
AS8298IPng Networks GmbHCHPeer2792

Prefixes

The largest blocks AS57866 originates, widest first.

Largest prefixes originated by AS57866
PrefixAddressesVisibility
37.139.136.0/212k80/81
45.141.104.0/221k80/81
45.149.8.0/221k80/81
185.52.236.0/221k80/81
185.242.64.0/221k80/81
193.187.120.0/221k81/81
45.88.65.0/2425681/81
46.226.126.0/2425681/81
85.208.60.0/2425681/81
176.61.131.0/2425681/81

Routing health

How AS57866'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

  • Valid66.7%14
  • Invalid0.0%0
  • No ROA33.3%7

Propagation

  • Globally propagated90% of full-feed peers or more95.2%20
  • Partially propagated40% to 90%4.8%1
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 5 prefixes

  • /2934.4B × /6460.0%3
  • /324.3B × /6420.0%1
  • /4865.5k × /6420.0%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

  • Announced185.43.34.0/2422nd Sept 2026
  • Withdrawn103.251.158.0/2421st Sept 2026

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