AS57154 SWKN Stadtwerke Konstanz GmbH

SWKN Stadtwerke Konstanz GmbH · registered in Germany

IPv4 addresses16,6407 prefixes · <0.001% of announced IPv4

Rank in Germany#269largest network in DE by IPv4 space, of 2,315 · 0.01% of DE

Rank worldwide#6,812of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryGermany2,599 ASNs registered there

Open AS57154 in ASN lookup Look up an IP in this network (5.10.8.1) All networks in Germany

IPv4 prefixes

All 7 prefixes, in address order.

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

IPv6 prefixes

All 1 prefix.

2a03:80::/32

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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