subnet.im

AS58291ColoCenter b.v.

NetherlandsRegistryRIPE NCC

As of 10th November 2026, AS58291 (ColoCenter b.v.), a network registered in the Netherlands with RIPE NCC, originates 16 IPv4 prefixes covering 9k addresses and 3 IPv6 prefixes. By IPv4 address space that makes it the 11,476th-largest of the 80,723 networks we see originating IPv4, and the 173rd-largest of 1,041 in the Netherlands. It is seen behind 25 upstream networks, most often AS6204 (INTERKVM HOST SRL) and AS174 (Cogent Communications, LLC), and in front of 7 downstream networks. 95% of its announcements have 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

16

IPv6 prefixes

3

IPv4 addresses

9k

IPv6 /64s

38.7B

Upstream graph

The networks AS58291 is seen behind, one and two hops out, drawn from real AS paths.

AS58291Toward the internet core
Upstream graph for AS58291: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS58291ColoCenter b.v.This networkAS174Cogent Communicat…AS6204INTERKVM HOST SRLAS6830Liberty Global Eu…AS20562Open Peering (Bro…AS24785Joint Transit (Br…AS151326DCConnect Communi…AS2914NTT America, Inc.AS1299Arelion (fka. Tel…AS6667Elisa OyjAS57866Fusix Networks B.…AS13030Init7 (Switzerlan…AS32590Valve Corporation

Networks observed one and two hops upstream of AS58291 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

170

adjacent networks

Upstreams
2515%
Peers
13881%
Downstreams
74%

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

Upstreams of AS58291
NetworkCountryRelationshipPathsVantage pts
AS6204INTERKVM HOST SRLROPeer69155
AS174Cogent Communications, LLCUSPeer61491
AS6830Liberty Global Europe Holding B.V.EUPeer36631
AS24785Joint Transit (Broadband Hosting B.V.)NLPeer14625
AS20562Open Peering (Broadband Hosting B.V.)NLPeer13233
AS6939Hurricane Electric LLCUSPeer11918
AS7713PT Telkom Indonesia TbkIDPeer993
AS213753InterEdge B.V.NLPeer8947
AS24482SG.GSSGPeer454
AS32590Valve CorporationUSPeer402

Prefixes

The largest blocks AS58291 originates, widest first.

Largest prefixes originated by AS58291
PrefixAddressesVisibility
5.39.184.0/212k75/76
185.79.152.0/221k75/76
185.102.68.0/221k75/76
185.140.184.0/221k75/76
213.156.28.0/221k75/76
5.253.237.0/2425675/76
23.230.52.0/2425675/76
45.43.153.0/2425675/76
45.141.20.0/2425675/76
91.205.193.0/2425675/76

Routing health

How AS58291'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

  • Valid94.7%18
  • Invalid0.0%0
  • No ROA5.3%1

Propagation

  • Globally propagated90% of full-feed peers or more100.0%19
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 16 prefixes

IPv6 — 3 prefixes

  • /2934.4B × /6433.3%1
  • /324.3B × /6433.3%1
  • /4865.5k × /6433.3%1

Recent changes

Announcements that started or stopped since 11th Oct 2026.

  • Withdrawn85.208.49.0/2422nd Oct 2026
  • Announced142.252.94.0/2414th Oct 2026
  • Withdrawn23.230.49.0/2414th Oct 2026

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