AS43155 SW-BIELEFELD-AS Stadtwerke Bielefeld GmbH

SW-BIELEFELD-AS Stadtwerke Bielefeld GmbH · registered in Germany

IPv4 addresses1,5362 prefixes · <0.001% of announced IPv4

Rank in Germany#932largest network in DE by IPv4 space, of 2,315 · <0.01% of DE

Rank worldwide#25,674of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryGermany2,599 ASNs registered there

Open AS43155 in ASN lookup Look up an IP in this network (91.194.108.1) All networks in Germany

IPv4 prefixes

All 2 prefixes, in address order.

91.194.108.0/23
185.99.52.0/22

IPv6 prefixes

All 1 prefix.

2a06:1080::/29

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources