$ query “AS58291” --type=asn → 1 result(s)

AS58291 · COLOCENTER

ColoCenter b.v.

AS58291 is operated by ColoCenter b.v. and serves as a mid-size transit provider, registered in the Netherlands since 2012. The system announces 7 424 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the Netherlands.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇳🇱 Netherlands
Category
Hosting
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
June 15, 2012
Last Changed
June 01, 2026
Last Seen
June 08, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
7 / 7
IPv6 Prefixes (raw / aggregated)
3 / 3
IPv4 Addresses
7 424
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇳🇱 Netherlands (13 568 IPs)
Prefix Changed
April 11, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
99 networks exchanging traffic without transit
Downstream Customers
5 downstreams buying transit
Unclassified
5 unclassified BGP neighbors
Degree
114 unique BGP neighbors
Reach
92 networks in customer cone

Upstream Providers (5)

  • AS174 — COGENT (Tier-1 transit)
  • AS6830 — LIBERTYGLOBAL (Tier-1 transit)
  • AS24785 — JOINTTRANSIT-AS
  • AS213753 — INTEREDGE
  • AS20562 — OPEN-PEERING-AS (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (7 total)

  • 5.39.184.0/21 (2 048 addresses (/21 prefix))
  • 45.11.28.0/22 (1 024 addresses (/22 prefix))
  • 185.79.152.0/22 (1 024 addresses (/22 prefix))
  • 185.102.68.0/22 (1 024 addresses (/22 prefix))
  • 185.140.184.0/22 (1 024 addresses (/22 prefix))
  • 213.156.28.0/22 (1 024 addresses (/22 prefix))
  • 91.205.193.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (3 total)

  • 2a02:f640::/29
  • 2a0e:5700::/32
  • 2001:67c:cdc::/48