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AS205838Ivory van Boeschoten trading as IVB Netwerk

NetherlandsRegistryRIPE NCCTypeContent

As of 11th November 2026, AS205838 (Ivory van Boeschoten trading as IVB…), a content network registered in the Netherlands with RIPE NCC, originates 2 IPv4 prefixes covering 512 addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 49,318th-largest of the 80,743 networks we see originating IPv4, and the 670th-largest of 1,042 in the Netherlands. It is seen behind 3 upstream networks, most often AS212762 (Casper Krook trading as Ck IT Solutions) and AS213905 (ISPLABS LIMITED), and in front of 1 downstream network. 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

2

IPv6 prefixes

2

IPv4 addresses

512

IPv6 /64s

131k

Upstream graph

The networks AS205838 is seen behind, one and two hops out, drawn from real AS paths.

AS205838Toward the internet core
Upstream graph for AS205838: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS205838Ivory van Boescho…This networkAS42093InterRacks B.V.AS212762Casper Krook trad…AS213905ISPLABS LIMITEDAS174Cogent Communicat…AS3356Lumen (Level 3)AS24940Hetzner Online Gm…AS35133Eranium B.V.AS203446SMARTNET Germany …AS214481Wojciech Czapkowi…

Networks observed one and two hops upstream of AS205838 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

8

adjacent networks

Upstreams
338%
Peers
450%
Downstreams
113%

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

Upstreams of AS205838
NetworkCountryRelationshipPathsVantage pts
AS212762Casper Krook trading as Ck IT SolutionsNLPeer17460
AS213905ISPLABS LIMITEDGBPeer6860
AS42093InterRacks B.V.NLPeer11

Prefixes

The largest blocks AS205838 originates, widest first.

Largest prefixes originated by AS205838
PrefixAddressesVisibility
82.24.91.0/242561/76
89.23.83.0/2425655/76
2a0f:85c1:cdd::/4865.5k × /6462/63
2a13:9500:1e2::/4865.5k × /6462/63

Routing health

How AS205838'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%4
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more50.0%2
  • Partially propagated40% to 90%25.0%1
  • Seen by few peersUnder 40%25.0%1

Prefix sizes

IPv4 — 2 prefixes

IPv6 — 2 prefixes

  • /4865.5k × /64100.0%2

Recent changes

Announcements that started or stopped since 12th Oct 2026.

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