Autonomous system profile

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

AS43155

Announcement observedRIPE NCC

Stadtwerke Bielefeld GmbH · SW-BIELEFELD-AS

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

Last active10/3/2026, 17:51:52Snapshot expired

View network topology RDAP registration

ASN: AS43155
Registration country: Germany
Name: Stadtwerke Bielefeld GmbH
Abbreviation: SW-BIELEFELD-AS
Registration date: 6/15/2007, 07:22:39
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
185.99.52.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
185.99.55.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record
91.194.108.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/3/2026, 08:00:00	✓	×	Historical record

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

Registration and sources

Organization: Stadtwerke Bielefeld GmbH
RIR: RIPE NCC
Registration country: Germany
Registration date: 6/15/2007, 07:22:39
Abuse contact: abuse@stadtwerke-bielefeld.de

Snapshot trend

10/3/2026, 17:51:523 v41 v62 Upstream · 0 Uncertain

10/3/2026, 17:51:513 v41 v62 Upstream · 0 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