AS5408 — GR-NET www.grnet.gr

Network type: education

AS5408 announces 66 IPv4 prefixes covering 179,712 addresses and 117 IPv6 prefixes.

About this network

GRNET is Greece's National Research and Education Network, the backbone connecting the country's universities, research centres, and public bodies to each other and internationally.

What it's used for

• Linking Greek universities, research institutes, and schools over a national high-speed backbone, with onward peering to GÉANT and the wider internet.

Notable

• As an NREN, addresses here belong to connected academic and research institutions, classified education rather than commercial hosting.
• GRNET also operates national cloud, HPC, and e-infrastructure services for the Greek research and education community.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 37.32.128.0/17
• 44.31.164.0/24
• 62.217.64.0/18
• 83.212.0.0/20
• 83.212.16.0/21
• 83.212.24.0/22
• 83.212.32.0/19
• 83.212.68.0/22
• 83.212.72.0/21
• 83.212.80.0/21
• 83.212.92.0/22
• 83.212.96.0/19
• 83.212.168.0/21
• 83.212.176.0/21
• 83.212.200.0/22
• 83.212.208.0/20
• 83.212.224.0/21
• 83.212.232.0/22
• 83.212.240.0/21
• 83.212.248.0/24
• 83.212.251.0/24
• 83.212.252.0/22
• 91.227.108.0/24
• 109.107.139.0/24
• 143.233.68.0/24
• 143.233.182.0/23
• 143.233.184.0/22
• 143.233.188.0/23
• 143.233.204.0/24
• 150.140.128.0/17
• 185.5.76.0/22
• 185.81.196.0/22
• 193.105.109.0/24
• 193.218.36.0/24
• 193.218.124.0/23
• 194.42.50.0/23
• 194.42.52.0/23
• 194.42.54.0/24
• 194.177.192.0/24
• 194.177.196.0/23
• 194.177.200.0/21
• 194.177.208.0/20
• 195.130.67.0/24
• 195.130.68.0/22
• 195.130.72.0/21
• 195.130.80.0/20
• 195.130.123.0/24
• 195.251.0.0/19
• 195.251.33.0/24
• 195.251.34.0/23
• 195.251.38.0/23
• 195.251.40.0/21
• 195.251.49.0/24
• 195.251.50.0/23
• 195.251.52.0/22
• 195.251.56.0/21
• 195.251.96.0/22
• 195.251.102.0/23
• 195.251.104.0/22
• 195.251.108.0/23
• 195.251.112.0/21
• 195.251.124.0/22
• 195.251.128.0/20
• 195.251.144.0/21
• 195.251.176.0/21
• 195.251.247.0/24
• 2001:648::/35
• 2001:648:2001::/48
• 2001:648:2002::/47
• 2001:648:2004::/46
• 2001:648:2008::/45
• 2001:648:2012::/47
• 2001:648:2014::/46
• 2001:648:2018::/45
• 2001:648:2020::/43
• 2001:648:2040::/42
• 2001:648:2080::/41
• 2001:648:2100::/43
• 2001:648:2121::/48
• 2001:648:2122::/47
• 2001:648:2124::/46
• 2001:648:2128::/45
• 2001:648:2130::/44
• 2001:648:2140::/42
• 2001:648:2180::/41
• 2001:648:2200::/40
• 2001:648:22b1::/48
• 2001:648:22b2::/47
• 2001:648:22b4::/46
• 2001:648:22b8::/45
• 2001:648:22c0::/42
• 2001:648:2303::/48
• 2001:648:2304::/46
• 2001:648:2308::/45
• 2001:648:2310::/44
• 2001:648:2320::/44
• 2001:648:2331::/48
• 2001:648:2332::/47
• 2001:648:2334::/46
• 2001:648:2338::/45

and 83 more.

Upstream networks

• AS21320 GEANT Vereniging
• AS13335 Cloudflare, Inc.
• AS20965 GEANT Vereniging
• AS3491 PCCW Global (HK) Ltd.
• AS8280 SYNAPSECOM S.A. Provider of Telecommunications and Internet Services

Downstream networks

• AS8248 Computer Technology Institute and Press "Diophantus"
• AS8581 University Of Ioannina
• AS8762 Hellenic Mediterranean University
• AS12402 University of Piraeus
• AS8643 NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS
• AS15690 NATIONAL OBSERVATORY OF ATHENS
• AS31563 Hellenic National Meteorological Service
• AS8617 of the Aegean
• AS8618 University
• AS8991 Hellenic Centre for Marine Research
• AS9069 Athens Egaleo GREECE
• AS8253 Democritus University of Thrace
• AS5489 International Hellenic University
• AS15948 fundamental and technological research
• AS8611 University of Economics and Business
• AS5470 Aristotle University of Thessaloniki
• AS8522 Foundation of Research and Technology Hellas
• AS6867 University of Crete
• AS12364 University of Macedonia, Economic and Social Sciences
• AS20813 Hellenic Open University
• AS50148 Elliniki Radiofonia Tileorasi (ERT) SA
• AS202640 KENTRO POLITISMOU IDRYMA STAVROS NIARCHOS MONOPROSOPI A.E.
• AS2546 National Center of Scientific Research DEMOKRITOS
• AS8278 Technical University of Crete
• AS47616 Center for Research and Technology Hellas (CERTH)

Adjacent networks

• AS21320 GEANT Vereniging
• AS20965 GEANT Vereniging
• AS8248 Computer Technology Institute and Press "Diophantus"
• AS8762 Hellenic Mediterranean University
• AS8581 University Of Ioannina
• AS3491 PCCW Global (HK) Ltd.
• AS8643 NATIONAL AND KAPODISTRIAN UNIVERSITY OF ATHENS
• AS12402 University of Piraeus
• AS15690 NATIONAL OBSERVATORY OF ATHENS
• AS8522 Foundation of Research and Technology Hellas
• AS31563 Hellenic National Meteorological Service
• AS13335 Cloudflare, Inc.
• AS8618 University
• AS8617 of the Aegean
• AS8991 Hellenic Centre for Marine Research
• AS8253 Democritus University of Thrace
• AS9069 Athens Egaleo GREECE
• AS15948 fundamental and technological research
• AS8611 University of Economics and Business
• AS5489 International Hellenic University
• AS6867 University of Crete
• AS12364 University of Macedonia, Economic and Social Sciences
• AS5470 Aristotle University of Thessaloniki
• AS8280 SYNAPSECOM S.A. Provider of Telecommunications and Internet Services
• AS20813 Hellenic Open University

Routing security

• RPKI: 34 valid, 0 invalid and 6 not-found announcements; 23 ROAs.
• ASPA: 3 authorised providers.
• IRR: 100% of announcements registered; 428 route objects.
• Listed in as-sets: AS-ACNAIX, AS-CYTANET-AMSIX-EXEPTIONS, AS-GRIX, AS-GRIX-ATH, AS-GRIX-ATH-RS, AS-GRIX-THESS, AS-GRIX-THESS-RS, AS-GRNET, AS-KDDCUSTOMER2, AS-MGRIX2, AS-RIS-RRC25, AS-SCHERINGNRNS, AS-TELSTRA-INTL-CUSTOMERS, AS-UDOS, AS13335:AS-CUSTOMERS, AS3329:AS-HOLIX, AS37271:AS-TEST-CF, AS5408:AS-TO-AIX, AS5408:AS-TO-GEANT, AS5408:AS-TO-GRIX.

Internet exchanges

• Greek Internet Exchange - Athens — Athens, Greece
• Greek Internet Exchange - Thessaloniki — Thessaloniki, Greece