AS21033 ESSILOR ESSILOR International SAS

ESSILOR ESSILOR International SAS · registered in France

IPv4 addresses2,3047 prefixes · <0.001% of announced IPv4

Rank in France#372largest network in FR by IPv4 space, of 1,375 · <0.01% of FR

Rank worldwide#20,889of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryFrance1,474 ASNs registered there

Open AS21033 in ASN lookup Look up an IP in this network (193.242.5.1) All networks in France

IPv4 prefixes

All 7 prefixes, in address order.

193.242.5.0/24
193.242.6.0/23
193.242.9.0/24
193.242.11.0/24
193.242.17.0/24
193.242.42.0/23
193.242.46.0/24

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AS50087#374 OUVANET OUVANET SARL2,304

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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