AS31367 NEO-CUST Zayo Infrastructure France SA

NEO-CUST Zayo Infrastructure France SA · registered in France

IPv4 addresses4,60810 prefixes · <0.001% of announced IPv4

Rank in France#245largest network in FR by IPv4 space, of 1,375 · <0.01% of FR

Rank worldwide#14,377of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryFrance1,474 ASNs registered there

Open AS31367 in ASN lookup Look up an IP in this network (78.41.128.1) All networks in France

IPv4 prefixes

All 10 prefixes, in address order.

78.41.128.0/22
78.41.132.0/22
85.208.192.0/24
91.200.177.0/24
91.216.11.0/24
159.151.250.0/23
185.236.141.0/24
185.254.208.0/23
185.254.210.0/24
192.109.238.0/24

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AS44821#246 ONEOP Koesio Nord Ouest SAS4,608

AS202757#247 CASTLE-IT PLT Connectic SARL4,608

AS48813#248 ENIX-AS Enix SAS4,352

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