AS12344 — CZECHITC CZECH IT CLUSTER, druzstvo

AS12344 announces 1 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

A Czech cooperative of IT companies, running shared datacentre space for its members.

What it's used for

• Datacentre hosting. One /22 of 1,024 addresses, one IPv6 /31, two observed BGP neighbours.

Notable

• Every sampled reverse name begins datacenter-, under czech-itc.cz, and the broadcast address of one subnet answers as datacenter-broadcast.czech-itc.cz.
• The IPv4 block is registered as CZ-CZECHITC-20150930, and the AS was first seen in the routing data five weeks later.
• The IPv6 allocation is a /31 — larger than the /32 a provider is normally issued, and an odd size to hold.

Interesting

• "Družstvo" in the registered name is the Czech legal form for a cooperative, and it changes how this network should be read. The members are competitors who agreed to share infrastructure, so the address space belongs to all of them and to none of them individually, and the AS is a piece of joint plant rather than one company's network.
• A /31 is 2^97 addresses. Nothing about the IPv4 side of this network — a single /22, two neighbours, one datacentre — suggests a need on that scale, which is a fair summary of how IPv6 allocation works: the smallest useful unit is already far past sufficient.

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

Announced prefixes

• 185.119.96.0/22
• 2a04:f310::/31

Upstream networks

• AS6855 Slovak Telekom, a.s.
• AS16019 Vodafone Czech Republic a.s.

Adjacent networks

• AS6855 Slovak Telekom, a.s.
• AS16019 Vodafone Czech Republic a.s.

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-GTSCZ-CUST, AS-VODAFONE-CZ-B2B.