subnet.im

AS212762Casper Krook trading as Ck IT Solutions

NetherlandsRegistryRIPE NCC

As of 11th November 2026, AS212762 (Casper Krook trading as Ck IT Solutions), a network registered in the Netherlands with RIPE NCC, originates 1 IPv4 prefix covering 256 addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 59,976th-largest of the 80,743 networks we see originating IPv4, and the 787th-largest of 1,042 in the Netherlands. It is seen behind 5 upstream networks, most often AS35133 (Eranium B.V.) and AS24940 (Hetzner Online GmbH), and in front of 1 downstream network. 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

1

IPv6 prefixes

3

IPv4 addresses

256

IPv6 /64s

197k

Upstream graph

The networks AS212762 is seen behind, one and two hops out, drawn from real AS paths.

AS212762Toward the internet core
Upstream graph for AS212762: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS212762Casper Krook trad…This networkAS6939Hurricane Electri…AS24482SG.GSAS24940Hetzner Online Gm…AS35133Eranium B.V.AS39122Blacknight Intern…AS20130Depaul UniversityAS132337AxclusiveAS2914NTT America, Inc.AS3356Lumen (Level 3)AS6830Liberty Global Eu…AS174Cogent Communicat…AS1299Arelion (fka. Tel…

Networks observed one and two hops upstream of AS212762 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

39

adjacent networks

Upstreams
513%
Peers
3385%
Downstreams
13%

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

Upstreams of AS212762
NetworkCountryRelationshipPathsVantage pts
AS35133Eranium B.V.NLPeer415128
AS24940Hetzner Online GmbHDEPeer72
AS39122Blacknight Internet Solutions LimitedIEPeer72
AS6939Hurricane Electric LLCUSPeer55
AS24482SG.GSSGPeer52

Prefixes

The largest blocks AS212762 originates, widest first.

Largest prefixes originated by AS212762
PrefixAddressesVisibility
146.103.47.0/2425676/76
2a05:dfc1:5503::/4865.5k × /6463/63
2a05:dfc1:5506::/4865.5k × /6463/63
2a0f:6280:1501::/4865.5k × /6463/63

Routing health

How AS212762'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 more100.0%4
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 1 prefixes

IPv6 — 3 prefixes

  • /4865.5k × /64100.0%3

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS212762 started or stopped in this period.

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