AS205100 F3NETZE F3 Netze e.V.

F3NETZE F3 Netze e.V. · registered in Germany

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Germany#1,878largest network in DE by IPv4 space, of 2,315 · <0.01% of DE

Rank worldwide#60,146of 79,396 networks with IPv4

IPv6261 x /486 prefixes

CountryGermany2,599 ASNs registered there

Open AS205100 in ASN lookup Look up an IP in this network (185.220.100.1) All networks in Germany

IPv4 prefixes

All 1 prefix, in address order.

185.220.100.0/24

IPv6 prefixes

All 6 prefixes.

2a0b:f4c0::/40
2a0b:f4c0:100::/48
2a0b:f4c0:16c::/48
2a0b:f4c0:1a4::/48
2a0b:f4c0:1b4::/48
2a0b:f4c0:400::/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