AS50522 Sewan Nederland BV
AS50522 is operated by Sewan Nederland BV and registered with RIPE NCC (NL) since 2010-02-02.
It announces 11 IPv4 and 1 IPv6 prefixes, 100% of them RPKI valid.
RIPE RIS sees 43 upstream and peer networks and 4 downstream networks next to it.
PeeringDB lists it as a Cable/DSL/ISP network at 5 internet exchanges and 9 facilities. Its peering policy is selective.
| Name | Sewan Nederland BV |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Netherlands (NL) |
| Delegated on | 2010-02-02 |
| Network type | Cable/DSL/ISP, Europe |
| Peering policy | Selective |
| IRR as-set | AS-POCOS |
| Prefixes (IPv4 / IPv6) | 11 / 1 |
| RPKI valid | 100% (12 / 12) |
| Upstreams and peers | 43 |
| Downstream networks | 4 |
| Website | sewan.nl |
Routing health
- AS50522 announces 11 IPv4 and 1 IPv6 prefixes.
- All 12 announced prefixes are RPKI valid.
- 43 upstreams and peers, 4 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 12
- 81.23.244.0/22
- 81.173.0.0/22
- 81.173.7.0/24
- 81.173.32.0/22
- 81.173.48.0/20
- 81.173.64.0/20
- 81.173.96.0/22
- 81.173.125.0/24
- 81.173.126.0/23
- 109.235.32.0/21
- 185.61.68.0/22
- 2a03:be00::/32
Upstreams and peers 43
The networks RIPE RIS sees next to AS50522 in BGP paths, the most visible first.
Peering
Peering policy: Selective. Suggested max-prefix limits: 30 IPv4, 15 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| AMS-IX | 1 | 100G | Yes |
| Frys-IX | 1 | 10G | Yes |
| LSIX: Main | 1 | 10G | Yes |
| NL-ix: Main | 1 | 100G | Yes |
| Speed-IX: SPEED-IX | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| EcoRacks | Eindhoven | NL |
| EFX | Eindhoven | NL |
| Equinix AM7 - Amsterdam, Kuiperberweg | Amsterdam | NL |
| Global Switch Amsterdam | Amsterdam | NL |
| Interconnect Services DC2 Eindhoven | Eindhoven | NL |
| KPN DC2 | Amsterdam | NL |
| NIKHEF Amsterdam | Amsterdam | NL |
| NorthC Eindhoven 1 | Eindhoven | NL |
| NorthC Eindhoven 2 | Eindhoven | NL |
More about AS50522
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 05:54 UTC. The country is where the AS number was registered, not necessarily where the network operates.