AS2047#5 ASN-ROCHE-BASLE Hoffmann - La Roche Ltd.372,992
AS513#6 CERN CERN - European Organization for Nuclear Research354,816
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