AS29056 — CITYCOM-AS

AS29056 announces 17 IPv4 prefixes covering 33,280 addresses and 1 IPv6 prefixes.

About this network

The AS handle CITYCOM-AS is held by Citycom Telekommunikation GmbH.

What it's used for

• The address space carries static IP addresses for business and residential customers in the Graz region, evidenced by reverse DNS entries such as static.grazkom.at and lmx.leitner-mineraloele.at.
• The AS announces 33,280 IPv4 addresses across 17 prefixes and 1 IPv6 prefix, while maintaining 41 observed neighbours, indicating a role as a regional access provider with significant peering relationships.

Notable

• All registrants for the largest prefixes are consistent with the announcer, listing "Citycom Admins", "Citycom Telekommunikation GmbH", and "Citycom Telekommunikation RIPE team".
• The address inventory is finely subdivided into multiple /20 and /22 blocks, reflecting a structured internal corporate estate rather than a single large contiguous allocation.

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

Announced prefixes

• 37.143.176.0/20
• 77.75.23.0/24
• 85.237.0.0/19
• 91.143.96.0/20
• 91.208.56.0/24
• 109.73.144.0/20
• 185.15.236.0/22
• 185.220.252.0/22
• 185.222.128.0/22
• 185.225.144.0/22
• 185.228.128.0/22
• 185.233.144.0/22
• 185.236.72.0/22
• 193.46.248.0/24
• 194.110.78.0/24
• 195.88.238.0/23
• 217.29.144.0/20
• 2a02:758::/32

Upstream networks

• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS8447 A1 Telekom Austria AG
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS48362 Stadtwerke Feldkirch
• AS9002 RETN Limited

Downstream networks

• AS41437 KNAPP AG
• AS29143 Magistrat Graz
• AS204410 Feistritzwerke-STEWEAG GmbH
• AS35646 Grazer Wechselseitige Versicherung AG
• AS41198 IGT Austria GmbH
• AS47106 Anton Paar GmbH
• AS48735 DELTA DIGITAL Friesenbichler & Co GmbH
• AS31473 BearingPoint GmbH
• AS44462 Stadtwerke Muerzzuschlag GmbH

Adjacent networks

• AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
• AS8447 A1 Telekom Austria AG
• AS41437 KNAPP AG
• AS6939 Hurricane Electric LLC
• AS29143 Magistrat Graz
• AS204410 Feistritzwerke-STEWEAG GmbH
• AS35646 Grazer Wechselseitige Versicherung AG
• AS41198 IGT Austria GmbH
• AS48735 DELTA DIGITAL Friesenbichler & Co GmbH
• AS47106 Anton Paar GmbH
• AS31473 BearingPoint GmbH
• AS3303 Swisscom (Schweiz) AG
• AS44462 Stadtwerke Muerzzuschlag GmbH
• AS48362 Stadtwerke Feldkirch
• AS57463 NetIX Communications JSC
• AS9002 RETN Limited

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• DE-CIX Munich — Munich, Germany
• Vienna Internet Exchange — Vienna, Austria