AS51887 ASCOMSOFT FREQUENTIS COMSOFT GmbH

ASCOMSOFT FREQUENTIS COMSOFT GmbH · registered in Germany

IPv4 addresses7682 prefixes · <0.001% of announced IPv4

Rank in Germany#1,491largest network in DE by IPv4 space, of 2,315 · <0.01% of DE

Rank worldwide#44,643of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryGermany2,599 ASNs registered there

Open AS51887 in ASN lookup Look up an IP in this network (91.220.159.1) All networks in Germany

IPv4 prefixes

All 2 prefixes, in address order.

91.220.159.0/24
91.221.120.0/23

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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