AS42821 RAPIDNET-DE K&K Kommunikationssysteme GmbH

RAPIDNET-DE K&K Kommunikationssysteme GmbH · registered in Germany

IPv4 addresses3,58410 prefixes · <0.001% of announced IPv4

Rank in Germany#642largest network in DE by IPv4 space, of 2,315 · <0.01% of DE

Rank worldwide#16,915of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountryGermany2,599 ASNs registered there

Open AS42821 in ASN lookup Look up an IP in this network (77.90.128.1) All networks in Germany

IPv4 prefixes

All 10 prefixes, in address order.

77.90.128.0/23
77.90.130.0/24
77.90.132.0/23
77.90.134.0/24
77.90.136.0/23
77.90.140.0/24
77.90.143.0/24
77.90.144.0/24
77.90.146.0/23
213.209.138.0/24

IPv6 prefixes

All 2 prefixes.

2a04:29c2::/32
2a04:29c7::/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