AS203560 REGFISH-AS regfish GmbH

REGFISH-AS regfish GmbH · registered in Germany

IPv4 addresses1,5364 prefixes · <0.001% of announced IPv4

Rank in Germany#958largest network in DE by IPv4 space, of 2,315 · <0.01% of DE

Rank worldwide#26,212of 79,396 networks with IPv4

IPv63 x /482 prefixes

CountryGermany2,599 ASNs registered there

Open AS203560 in ASN lookup Look up an IP in this network (178.21.144.1) All networks in Germany

IPv4 prefixes

All 4 prefixes, in address order.

178.21.144.0/23
178.21.146.0/24
185.8.168.0/23
185.8.170.0/24

IPv6 prefixes

All 2 prefixes.

2a02:2c0::/47
2a02:2c0:2::/48

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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