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AS43531BSO Network Solutions SAS

FranceRegistryRIPE NCCTypeCarrier

As of 26th September 2026, AS43531 (BSO Network Solutions SAS), a transit carrier registered in France with RIPE NCC, originates 23 IPv4 prefixes covering 53.2k addresses and 9 IPv6 prefixes. By IPv4 address space that makes it the 4,312th-largest of the 79,516 networks we see originating IPv4, and the 49th-largest of 1,365 in France. It is seen behind 6 upstream networks, most often AS5413 (Wavenet Limited) and AS13237 (euNetworks GmbH), and in front of 64 downstream networks. 84% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 0% of its routes reach at least 90% of full-feed peers, and 31 prefixes are also originated by another network.

At a glance

IPv4 prefixes

23

IPv6 prefixes

9

IPv4 addresses

53.2k

IPv6 /64s

9.7B

Upstream graph

The networks AS43531 is seen behind, one and two hops out, drawn from real AS paths.

AS43531Toward the internet core
Upstream graph for AS43531: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS43531BSO Network Solut…This networkAS5413Wavenet LimitedAS6939Hurricane Electri…AS13237euNetworks GmbHAS35280F5 Networks SARLAS37100SEACOM LimitedAS3356Lumen (Level 3)AS18106Viewqwest Pte LtdAS20130Depaul UniversityAS1299Arelion (fka. Tel…AS3257GTT Communication…AS2914NTT America, Inc.AS6453TATA Communicatio…

Networks observed one and two hops upstream of AS43531 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

164

adjacent networks

Upstreams
64%
Peers
9457%
Downstreams
6439%

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

Upstreams of AS43531
NetworkCountryRelationshipPathsVantage pts
AS5413Wavenet LimitedGBPeer5362
AS13237euNetworks GmbHDEPeer2331
AS37100SEACOM LimitedMUPeer2281
AS6939Hurricane Electric LLCUSPeer1612
AS35280F5 Networks SARLFRPeer43
AS8529Zain Omantel International FZ-LLCAEPeer11

Prefixes

All 32

The largest blocks AS43531 originates, widest first.

Largest prefixes originated by AS43531
PrefixAddressesVisibility
89.30.0.0/1732.8k3/81
31.217.128.0/198.2k3/81
46.18.168.0/212k3/81
83.243.16.0/212k3/81
91.196.184.0/221k3/81
185.55.16.0/221k3/81
193.218.12.0/221k3/81
195.49.140.0/221k3/81
193.27.78.0/235123/81
31.217.129.0/242565/81

Routing health

How AS43531'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

  • Valid84.4%27
  • Invalid0.0%0
  • No ROA15.6%5

Propagation

  • Globally propagated90% of full-feed peers or more0.0%0
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%100.0%32

Prefix sizes

IPv4 — 23 prefixes

IPv6 — 9 prefixes

  • /324.3B × /6422.2%2
  • /35537M × /6422.2%2
  • /4016.8M × /6411.1%1
  • /4865.5k × /6444.4%4

Recent changes

Announcements that started or stopped since 28th Aug 2026.

No announcement by AS43531 started or stopped in this period.

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