AS58291 — ColoCenter ColoCenter b.v.

Network type: hosting

AS58291 announces 16 IPv4 prefixes covering 8,960 addresses and 3 IPv6 prefixes.

About this network

The AS handle COLOCENTER is held by ColoCenter b.v.

What it's used for

• The address space carries colocation and hosting infrastructure, evidenced by reverse DNS entries pointing to colocenter.nl and netnames such as NL-COLOCENTER-20120515.
• The AS announces 7168 IPv4 addresses across 9 prefixes and 4 IPv6 prefixes, while maintaining 92 observed neighbours; this ratio indicates a transit or peering-heavy role typical of a datacenter operator connecting to multiple upstreams and peers.
• Traffic from this AS consists of hosted server workloads, cloud instances, and colocation tenants, consistent with ColoCenter's business of providing datacenter, cloud, and hosting services in Zoetermeer, Netherlands.

Notable

• Registrants for the majority of prefixes align with the announcer, listing ColoCenter b.v. as the administrative and technical contact for blocks like 5.39.184.0/21 and 185.79.152.0/22.
• Some prefixes, including 185.102.68.0/22 and 213.156.28.0/22, are registered to Defion Security Netherlands B.V. under netnames NL-COMPUTEST, while 45.43.153.0/24, 45.141.20.0/24, and 85.208.49.0/24 are registered to GLOBALIT DOO, and 91.205.193.0/24 to CloudMonsters B.V., indicating leased or historically acquired address space.
• The inventory includes a mix of /21, /22, and /24 blocks, with the largest being 5.39.184.0/21, reflecting a fragmented but substantial address estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 5.39.184.0/21
• 5.253.237.0/24
• 23.230.52.0/24
• 45.43.153.0/24
• 45.141.20.0/24
• 91.205.193.0/24
• 92.60.66.0/24
• 104.165.118.0/24
• 142.252.94.0/24
• 156.67.120.0/24
• 185.79.152.0/22
• 185.102.68.0/22
• 185.140.184.0/22
• 199.104.32.0/24
• 213.156.28.0/22
• 216.172.144.0/24
• 2001:67c:cdc::/48
• 2a01:4c01::/32
• 2a02:f640::/29

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS6830 Liberty Global Europe Holding B.V.
• AS6204 INTERKVM HOST SRL
• AS24785 Broadband Hosting B.V.
• AS50304 Blix Solutions AS
• AS20562 Broadband Hosting B.V.
• AS204092 Association GRIFON
• AS37721 Virtual Technologies & Solutions
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS48185 team.blue NV
• AS401753 BIXCE Inc
• AS6696 VERIXI SA
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS34927 iFog GmbH
• AS57866 Fusix Networks B.V.
• AS202365 Omer GOLGELI
• AS49673 Truenetwork LLC
• AS4657 StarHub Ltd
• AS37100 SEACOM Limited
• AS213753 InterEdge B.V.
• AS29632 Netassist International EOOD
• AS56655 Gigahost AS

Downstream networks

• AS207043 DEDIK SERVICES LIMITED
• AS59929 Flexibelt B.V.
• AS219506 Vladislav Doniy
• AS207489 RDK IT Solutions B.V.
• AS206009 Kinga de Vos trading as Kavos Vof
• AS209675 Jelle Hofstee trading as AxisNetworks
• AS401142 AceRDP

Adjacent networks

• AS207043 DEDIK SERVICES LIMITED
• AS6204 INTERKVM HOST SRL
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS6830 Liberty Global Europe Holding B.V.
• AS59929 Flexibelt B.V.
• AS219506 Vladislav Doniy
• AS24785 Broadband Hosting B.V.
• AS207489 RDK IT Solutions B.V.
• AS50304 Blix Solutions AS
• AS20562 Broadband Hosting B.V.
• AS206009 Kinga de Vos trading as Kavos Vof
• AS17639 Converge ICT Solutions Inc.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS204092 Association GRIFON
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS49673 Truenetwork LLC
• AS48185 team.blue NV
• AS57866 Fusix Networks B.V.
• AS401753 BIXCE Inc
• AS6696 VERIXI SA
• AS209675 Jelle Hofstee trading as AxisNetworks
• AS202365 Omer GOLGELI

Routing security

• RPKI: 18 valid, 0 invalid and 1 not-found announcements; 22 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 36 route objects.
• Listed in as-sets: AS-COLOCENTER, AS-GREEN-PEERS, AS-HWNG-DOWNSTREAMS, AS-JOINTTRANSIT-IPV6, AS-LIQUID-AMSIXPEERS, AS-LSC-IXP-CONNECTED, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS1200:AS-AMS-IX-PEERS, AS37271:AS-PEERS, AS8218:AS-AMSIX-RS, AS8821:AS-PEERS.

Internet exchanges

• Neutral Internet Exchange — Amsterdam, Netherlands
• The Frys Internet Exchange — Frysian, Netherlands
• Speed Internet Exchange — Dronten, Netherlands
• InterIX Internet Exchange — Amsterdam, Netherlands
• ERA-IX Amsterdam — Amsterdam, Netherlands