AS8399 Sewan SAS
AS8399 is operated by Sewan SAS and registered with RIPE NCC (FR) since 1997-07-29.
It announces 32 IPv4 and 4 IPv6 prefixes, 86% of them RPKI valid.
RIPE RIS sees 74 upstream and peer networks and 0 downstream networks next to it.
PeeringDB lists it as a Cable/DSL/ISP network at 11 internet exchanges and 9 facilities. Its peering policy is open.
| Name | Sewan SAS |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | France (FR) |
| Delegated on | 1997-07-29 |
| Network type | Cable/DSL/ISP, Europe |
| Peering policy | Open |
| IRR as-set | RIPE::AS-SEWAN |
| Prefixes (IPv4 / IPv6) | 32 / 4 |
| RPKI valid | 86% (31 / 36) |
| Upstreams and peers | 74 |
| Downstream networks | 0 |
| Website | sewan.eu |
Routing health
- AS8399 announces 32 IPv4 and 4 IPv6 prefixes.
- 31 of 36 announced prefixes are RPKI valid.
- 5 announced prefixes are not covered by a ROA of AS8399 (they may have none, or another network’s).
- 74 upstreams and peers, 0 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 36
- 37.97.64.0/19
- 37.97.96.0/20
- 37.139.120.0/21
- 65.39.64.0/19
- 80.251.96.0/20
- 81.93.0.0/19
- 88.213.224.0/19
- 155.2.128.0/19
- 157.143.128.0/17
- 178.174.96.0/20
- 178.255.160.0/21
- 185.6.92.0/22
- 185.8.252.0/22
- 185.24.140.0/22
- 185.32.208.0/22
- 185.42.176.0/22
- 185.50.52.0/24
- 185.50.53.0/24
- 185.50.54.0/24
- 185.50.55.0/24
- 185.65.248.0/22
- 185.76.216.0/22
- 185.218.208.0/22
- 185.249.20.0/22
- 193.142.158.0/24
- 195.135.0.0/17
- 195.135.0.0/18
- 195.135.12.0/23
- 195.135.48.0/20
- 195.135.48.0/24
- 217.74.96.0/20
- 217.181.128.0/17
- 2a0b:e3c0::/29
- 2a02:6e8::/32
- 2a02:c440::/29
- 2a05:5cc0::/29
Upstreams and peers 74
The networks RIPE RIS sees next to AS8399 in BGP paths, the most visible first.
- AS35699 Adamo Telecom Iberia S.A
- AS1299 Arelion (Twelve99)
- AS3257 GTT Communications (AS3257)
- AS6939 Hurricane Electric
- AS174 Cogent Communications, Inc.
- AS2914 NTT Global IP Network
- AS6461 Zayo
- AS33891 Core-Backbone
- AS12479 Orange Spain
- AS25091 IP-Max SA
- AS34549 meerfarbig GmbH & Co. KG
- AS50629 LWLcom
Peering
Peering policy: Open. Suggested max-prefix limits: 100 IPv4, 10 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| 1-FR FREE | 1 | 100G | Yes |
| 1-IX EU | 1 | 20G | Yes |
| AMS-IX | 1 | 10G | Yes |
| DE-CIX Frankfurt: DE-CIX Frankfurt Peering LAN | 1 | 5G | Yes |
| DE-CIX Madrid: DE-CIX Madrid Peering LAN | 1 | 2G | Yes |
| Equinix Paris: Equinix IX - PA Metro | 2 | 20G | Yes |
| ESpanix Madrid Lower LAN | 1 | 10G | Yes |
| ESpanix Madrid Upper LAN | 1 | 10G | Yes |
| France-IX Paris | 2 | 200G | Yes |
| nine | 1 | 100G | Yes |
| nine - six in Paris | 1 | 100G | Yes |
| Facility | City | Country |
|---|---|---|
| Digital Realty BRU1 - Brussels | Brussels | BE |
| Digital Realty Madrid MAD1-2 | Madrid | ES |
| Equinix MD2 - Madrid | Alcobendas | ES |
| Equinix PA6 - Paris, Condorcet | Paris | FR |
| Equinix PA7 - Paris, Energy Park | Paris | FR |
| Espanix Datacenter | Madrid | ES |
| Ikoula IKDC1 | Reims | FR |
| Telehouse - Paris 2 (Voltaire - Léon Frot) | Paris | FR |
| Unix-Solutions DC Leuven | Leuven | BE |
More about AS8399
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-12 16:22 UTC. The country is where the AS number was registered, not necessarily where the network operates.