AS21000 ATOS-AS Atos France SAS

ATOS-AS Atos France SAS · registered in France

IPv4 addresses9,21610 prefixes · <0.001% of announced IPv4

Rank in France#148largest network in FR by IPv4 space, of 1,375 · 0.01% of FR

Rank worldwide#9,608of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryFrance1,474 ASNs registered there

Open AS21000 in ASN lookup Look up an IP in this network (80.78.0.1) All networks in France

IPv4 prefixes

All 10 prefixes, in address order.

80.78.0.0/20
129.185.224.0/23
129.185.226.0/24
129.185.227.0/24
129.185.228.0/22
129.185.232.0/21
193.28.205.0/24
193.56.114.0/24
193.56.241.0/24
193.164.148.0/24

Similar-sized networks in France

ASNNameIPv4 addresses

AS43424#145 MAGICRETAIL SQUARK SARL9,472

AS64476#146 BLADE Shadow SAS9,472

AS202236#147 NEO-CENTER-EST Neo Center Est SARL9,216

AS49449#149 ALLIANCE-CONNECTIC-AS Celeste SAS9,216

AS197485#150 AS-EQUASENS-PHARMAGEST Equasens SA9,216

AS15401#151 EOLAS-AS Orange Business Services SA8,960

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