AS51973 KOLT-AS Koltushsky Internet Ltd

KOLT-AS Koltushsky Internet Ltd · registered in Russia

IPv4 addresses8,1922 prefixes · <0.001% of announced IPv4

Rank in Russia#592largest network in RU by IPv4 space, of 4,937 · 0.02% of RU

Rank worldwide#10,462of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryRussia4,993 ASNs registered there

Open AS51973 in ASN lookup Look up an IP in this network (46.149.32.1) All networks in Russia

IPv4 prefixes

All 2 prefixes, in address order.

46.149.32.0/20
81.163.240.0/20

IPv6 prefixes

All 1 prefix.

2001:67c:2954::/48

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ASNNameIPv4 addresses

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AS5468#593 UrFU Yeltsin UrFU, Ural Federal University8,192

AS5598#594 NETLUX-AS Anton Bobrovnikov8,192

AS6820#595 LEIVO Communications Informatics Ltd.8,192

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