AS8522#12 FORTH-AS Foundation of Research and Technology Hellas65,792
AS3323#13 NTUA National Technical University of Athens65,536
AS47616#15 CERTH Center for Research and Technology Hellas (CERTH)65,536
AS2546#16 ARIADNE-T National Center of Scientific Research DEMOKRITOS62,976
AS8643#17 ATHENAnet NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS51,712
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