AS57154 — SWKN Stadtwerke Konstanz GmbH

Network type: residential

AS57154 announces 7 IPv4 prefixes covering 16,640 addresses and 1 IPv6 prefixes.

About this network

SWKN is operated by Stadtwerke Konstanz GmbH, a municipal utility and regional internet service provider in Konstanz, Germany.

What it's used for

• The address space carries residential and business customer traffic, evidenced by reverse DNS names such as cust-213-152-119-254.pools.tk-bodensee.net and 031-047-082-000.cust.tk-bodensee.net.
• The AS announces 16,640 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, with 94 observed routing neighbours, indicating a regional access network providing last-mile connectivity.
• Traffic from this AS consists of subscriber eyeballs for broadband internet access, consistent with the operator's role as a regional ISP offering cable and DSL services.

Notable

• Registrants for the majority of prefixes are consistent with the announcer, listing Stadtwerke Konstanz GmbH and Stadtwerke Konstanz ISP-Team; the prefix 193.102.25.0/24 is registered to Vanderlande Logistics GmbH under netname AEG-KN.
• The address inventory is composed of multiple /21 and /22 blocks, reflecting a typical regional ISP footprint with segmented customer pools.

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

Announced prefixes

• 5.10.8.0/21
• 31.47.80.0/21
• 88.133.248.0/21
• 185.36.44.0/22
• 185.80.168.0/22
• 193.102.25.0/24
• 213.152.96.0/19
• 2a03:80::/32

Upstream networks

• AS205112 PHILUNET GmbH
• AS60169 R-KOM Regensburger Telekommunikationsgesellschaft mbH
• AS6939 Hurricane Electric LLC
• AS6730 Sunrise GmbH
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS24482 SG.GS
• AS213241 TECHIT.BE SRL
• AS48185 team.blue NV
• AS37721 Virtual Technologies & Solutions
• AS49432 Dominic Schallert trading as schallert.com e.U.
• AS34019 Hivane Association
• AS56655 Gigahost AS
• AS4657 StarHub Ltd
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS12552 GlobalConnect AB
• AS17639 Converge ICT Solutions Inc.
• AS9002 RETN Limited

Downstream networks

• AS214410 Stadtwerke Waldkirch GmbH

Adjacent networks

• AS205112 PHILUNET GmbH
• AS214410 Stadtwerke Waldkirch GmbH
• AS60169 R-KOM Regensburger Telekommunikationsgesellschaft mbH
• AS6939 Hurricane Electric LLC
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS49432 Dominic Schallert trading as schallert.com e.U.
• AS213241 TECHIT.BE SRL
• AS12552 GlobalConnect AB
• AS6730 Sunrise GmbH
• AS48185 team.blue NV
• AS34019 Hivane Association
• AS50300 CustodianDC Limited
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS3216 PJSC "Vimpelcom"
• AS56655 Gigahost AS
• AS4657 StarHub Ltd
• AS37100 SEACOM Limited
• AS58115 SwissIX Internet Exchange
• AS1103 SURF B.V.
• AS9002 RETN Limited
• AS17639 Converge ICT Solutions Inc.

Routing security

• RPKI: 7 valid, 0 invalid and 1 not-found announcements; 7 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 14 route objects.
• Listed in as-sets: AS-DFNFROMBELWUE, AS-ECIX-FRA, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-MANDA-ECIX-PEERS-V4, AS-MANDA-ECIX-PEERS-V6, AS-SWKN, AS6777:AS-AMS-IX-RS, AS6777:AS-AMS-IX-RS-SETS, AS6777:AS-AMS-IX-RS-SETS-V6, AS6777:AS-AMS-IX-RS-V6, AS680:AS-AMSIX-RS-PEERS.

Internet exchanges

• AMS-IX Amsterdam — Amsterdam, Netherlands
• Megaport Frankfurt IX — Frankfurt, Germany
• Rheintal Internet Exchange — Eschen, Liechtenstein
• Stuttgarter Internet Exchange — Stuttgart, Germany