AS5408 National Infrastructures for Research and Technology (GRNET)
AS5408 is operated by National Infrastructures for Research and Technology (GRNET) and registered with RIPE NCC (GR) since 1995-09-06.
It announces 29 IPv4 and 1 IPv6 prefixes, 80% of them RPKI valid.
RIPE RIS sees 5 upstream and peer networks and 30 downstream networks next to it.
PeeringDB lists it as an Educational/Research network at 2 internet exchanges and 3 facilities. Its peering policy is open.
| Name | National Infrastructures for Research and Technology (GRNET) |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Greece (GR) |
| Delegated on | 1995-09-06 |
| Network type | Educational/Research, Regional |
| Peering policy | Open |
| IRR as-set | RIPE::AS-GRNET |
| Prefixes (IPv4 / IPv6) | 29 / 1 |
| RPKI valid | 80% (24 / 30) |
| Upstreams and peers | 5 |
| Downstream networks | 30 |
| Website | grnet.gr |
Routing health
- AS5408 announces 29 IPv4 and 1 IPv6 prefixes.
- 24 of 30 announced prefixes are RPKI valid.
- 6 announced prefixes are not covered by a ROA of AS5408 (they may have none, or another network’s).
- 5 upstreams and peers, 30 downstream networks seen.
For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.
Announced prefixes 30
- 37.32.128.0/17
- 44.31.164.0/24
- 62.217.64.0/18
- 62.217.85.0/24
- 62.217.126.0/24
- 83.212.0.0/16
- 83.212.168.0/23
- 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
- 194.177.192.0/19
- 194.177.208.0/22
- 195.130.64.0/18
- 195.251.0.0/16
- 195.251.2.0/24
- 195.251.24.0/22
- 2001:648::/29
Upstreams and peers 5
The networks RIPE RIS sees next to AS5408 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 600 IPv4, 40 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| GR-IX::Athens: Peering Lan | 2 | 30G | Yes |
| GR-IX::Thessaloniki: Peering LAN | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| Digital Realty ATH1/2/3 - Athens | Koropi | GR |
| TI Sparkle Greece (IDC) | Metamorfosi | GR |
| Εθνικό Ίδρυμα Ερευνών / National Hellenic Research Foundation (EIE/NHRF) | Athens | GR |
More about AS5408
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-13 19:45 UTC. The country is where the AS number was registered, not necessarily where the network operates.