AS56513 OPTISIS-AS Optisis d.o.o.

OPTISIS-AS Optisis d.o.o. · registered in Slovenia

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Slovenia#64largest network in SI by IPv4 space, of 262 · 0.02% of SI

Rank worldwide#48,412of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountrySlovenia272 ASNs registered there

Open AS56513 in ASN lookup Look up an IP in this network (91.224.172.1) All networks in Slovenia

IPv4 prefixes

All 1 prefix, in address order.

91.224.172.0/23

IPv6 prefixes

All 1 prefix.

2001:67c:548::/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