AS203163 INTERNET04-AS OOO Internet 04

INTERNET04-AS OOO Internet 04 · registered in Russia

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in Russia#2,569largest network in RU by IPv4 space, of 4,937 · <0.01% of RU

Rank worldwide#49,247of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryRussia4,993 ASNs registered there

Open AS203163 in ASN lookup Look up an IP in this network (193.233.155.1) All networks in Russia

IPv4 prefixes

All 2 prefixes, in address order.

193.233.155.0/24
193.233.156.0/24

IPv6 prefixes

All 1 prefix.

2001:678:7ac::/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