AS59959 SferiaNET.cz
AS59959 is operated by SferiaNET.cz and registered with RIPE NCC (CZ) since 2018-01-26.
It announces 4 IPv4 and 1 IPv6 prefixes, 40% of them RPKI valid.
RIPE RIS sees 13 upstream and peer networks and 0 downstream networks next to it.
PeeringDB lists it as a Cable/DSL/ISP network at 2 internet exchanges and 1 facility. Its peering policy is open.
| Name | SferiaNET.cz |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Czechia (CZ) |
| Delegated on | 2018-01-26 |
| Network type | Cable/DSL/ISP, Europe |
| Peering policy | Open |
| Prefixes (IPv4 / IPv6) | 4 / 1 |
| RPKI valid | 40% (2 / 5) |
| Upstreams and peers | 13 |
| Downstream networks | 0 |
| Website | sferia.cz |
Routing health
- AS59959 announces 4 IPv4 and 1 IPv6 prefixes.
- 2 of 5 announced prefixes are RPKI valid.
- 3 announced prefixes are not covered by a ROA of AS59959 (they may have none, or another network’s).
- 13 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 5
- 185.3.156.0/22
- 185.147.44.0/22
- 185.243.124.0/22
- 193.35.92.0/22
- 2a0d:1380::/29
Upstreams and peers 13
The networks RIPE RIS sees next to AS59959 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 2 IPv4, 1 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| NIX.CZ: Public peering VLAN | 1 | 10G | Yes |
| Peering.cz | 1 | 40G | Yes |
| Facility | City | Country |
|---|---|---|
| TTC TELEPORT DC1 | Prague | CZ |
More about AS59959
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 10:30 UTC. The country is where the AS number was registered, not necessarily where the network operates.