AS13020 — CCCV-AS Chaos Computer Club Veranstaltungsgesellschaft mbH

AS13020 announces 1 IPv4 prefixes covering 8,192 addresses and 1 IPv6 prefixes.

About this network

A reverse zone that writes addresses in hexadecimal, on a /19 that only lights up for events.

What it's used for

• The event network of the Chaos Computer Club's events company. 8,192 addresses in one IPv4 prefix, one IPv6 prefix, and one observed BGP neighbour.

Notable

• The blocks are 94.45.224.0/19, netname CCC-EVENT-NET, and 2001:67c:20a1::/48.
• All three sampled addresses answered, under eventnet.ccc.de.
• The names are hexadecimal: 94.45.232.0 answers e800, 94.45.239.255 answers efff, and 94.45.247.254 answers f7fe.

Interesting

• Each name is the last two octets written as four hex digits, so 232 and 0 become e800. Every other generated zone in this sweep writes addresses in decimal, usually with the dots turned into hyphens. Hex is the form an engineer reads a network in rather than the form a customer does, and choosing it says who the zone was written for.
• A /19 and a /48 held by an events company is address space that sits idle most of the year and then has to number a congress hall in an afternoon. Permanent allocations for temporary networks make sense once you notice the alternative is renumbering the entire operation annually.
• The IPv6 /48 comes from 2001:67c::/32, the same parent as the assignment on AS13008 in this range. That block is handed out as provider-independent space, so a /48 from it marks address space that stays with the holder across any change of upstream.
• One neighbour, which is all a network needs when it exists to be reachable rather than to sell reach.

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

Announced prefixes

• 94.45.224.0/19
• 2001:67c:20a1::/48

Upstream networks

• AS50472 Chaos Computer Club e.V.

Adjacent networks

• AS50472 Chaos Computer Club e.V.

Routing security

• RPKI: 2 valid, 0 invalid and 0 not-found announcements; 2 ROAs.
• ASPA: 2 authorised providers.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-CCC-EVENT, AS-EWETEL, AS-FFFFM, AS-FFRL, AS-GOSCOMB-V6, AS-HLKOMM-CUSTOMERS, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-WOBCOM, AS-WTNET, AS3320:AS-DTAG, AS3320:AS-DTAG-V6, AS57555:AS-PEERS, AS57555:AS-PEERS-DTAG.

Internet exchanges

• Berlin Commercial Internet Exchange — Berlin, Germany