AS201251 — HOSTZERO Hostzero GmbH

AS201251 announces 1 IPv4 prefixes covering 256 addresses and 1 IPv6 prefixes.

About this network

HOSTZERO is operated by Hostzero GmbH.

What it's used for

• The address space carries hosting infrastructure, evidenced by the netname DE-HOSTZERO-20050303 and the registrant Hostzero GmbH.
• The AS announces 256 IPv4 addresses and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small-scale hosting or business network rather than a transit provider.
• Traffic from this AS consists of web/API endpoints and open-source infrastructure services, as Hostzero deploys and operates Proxmox, Ceph, Keycloak, and Kubernetes for EU companies in Frankfurt.

Notable

• Registrants agree with the announcer, with the RDAP showing Hostzero GmbH as the administrative and abuse contact for the announced prefix.
• The address inventory is compact, consisting of a single /24 IPv4 block and a /32 IPv6 prefix, consistent with a focused hosting provider.

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

Announced prefixes

• 209.131.118.0/24
• 2a0e:a1c0::/32

Upstream networks

• AS47447 23M GmbH
• AS174 Cogent Communications, LLC

Adjacent networks

• AS47447 23M GmbH
• AS174 Cogent Communications, LLC

Routing security

• RPKI: 2 valid, 0 invalid and 0 not-found announcements; 2 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-23M, AS201251:AS-HOSTZERO.