AS51885 ALRO-AS ALRO S.A.

ALRO-AS ALRO S.A. · registered in Romania

IPv4 addresses2561 prefixes · <0.001% of announced IPv4

Rank in Romania#717largest network in RO by IPv4 space, of 900 · <0.01% of RO

Rank worldwide#68,105of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryRomania917 ASNs registered there

Open AS51885 in ASN lookup Look up an IP in this network (91.223.156.1) All networks in Romania

IPv4 prefixes

All 1 prefix, in address order.

91.223.156.0/24

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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