Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS57154

Announcement observedRIPE NCC

Stadtwerke Konstanz GmbH · SWKN

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/5/2026, 15:57:53Snapshot expired

View network topology RDAP registration

ASN: AS57154
Registration country: Germany
Name: Stadtwerke Konstanz GmbH
Abbreviation: SWKN
Registration date: 8/5/2011, 09:15:00
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.36.44.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record
185.80.168.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record
193.102.25.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record
213.152.96.0/19BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record
31.47.80.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record
5.10.8.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record
88.133.248.0/21BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/21/2026, 08:00:00	10/5/2026, 08:00:00	✓	×	Historical record

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: Stadtwerke Konstanz GmbH
RIR: RIPE NCC
Registration country: Germany
Registration date: 8/5/2011, 09:15:00
Abuse contact: abuse@tk-bodensee.net

Snapshot trend

10/5/2026, 15:57:537 v41 v634 Upstream · 53 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn