AS35339 — CZ-AS AtNOC GmbH

AS35339 announces 3 IPv4 prefixes covering 3,584 addresses and 1 IPv6 prefixes.

About this network

CZ-AS is operated by AtNOC GmbH, an Austrian computing infrastructure and web hosting provider based in Vienna.

What it's used for

• The address space carries customer and service infrastructure, evidenced by reverse DNS entries like 095129205254.cust.akis.net and netnames such as AT-AKIS-20090223 and AT-AKIS-20140801.
• The AS announces 3584 IPv4 addresses across 3 prefixes and 2 IPv6 prefixes, while maintaining 35 observed neighbours; this ratio of modest address space against a significant number of peering partners suggests a role focused on hosting and business connectivity rather than large-scale residential access or pure transit.

Notable

• Registrants for the two largest prefixes are listed as A.K.I.S. GmbH, while the smallest prefix is registered to AtNOC GmbH, indicating a relationship between the two entities or historical address allocation.
• The address inventory is compact, consisting of three distinct IPv4 blocks and two IPv6 blocks, all located in Austria.

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

Announced prefixes

• 95.129.200.0/21
• 185.65.232.0/22
• 193.239.188.0/23
• 2a02:b18::/32

Upstream networks

• AS48943 KAPPER NETWORK-COMMUNICATIONS GmbH
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS3303 Swisscom (Schweiz) AG
• AS9002 RETN Limited
• AS48362 Stadtwerke Feldkirch

Adjacent networks

• AS48943 KAPPER NETWORK-COMMUNICATIONS GmbH
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS1299 Arelion Sweden AB
• AS3303 Swisscom (Schweiz) AG
• AS9002 RETN Limited
• AS48362 Stadtwerke Feldkirch

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-ATNOC, AS-KAPPERNET, AS-NEXTLAYER, AS-NEXTLAYER-V6, AS-VIX-MEMBERS, AS-XO-B, AS8508:AS-SASK-UPC-IN.

Internet exchanges

• Vienna Internet Exchange — Vienna, Austria