AS43404 UCARU-AS Fastnet LLC

UCARU-AS Fastnet LLC · registered in Russia

IPv4 addresses10,2402 prefixes · <0.001% of announced IPv4

Rank in Russia#472largest network in RU by IPv4 space, of 4,937 · 0.02% of RU

Rank worldwide#8,886of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)1 prefixes

CountryRussia4,993 ASNs registered there

Open AS43404 in ASN lookup Look up an IP in this network (77.87.200.1) All networks in Russia

IPv4 prefixes

All 2 prefixes, in address order.

77.87.200.0/21
89.23.32.0/19

IPv6 prefixes

All 1 prefix.

2a04:17c0::/29

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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