AS57121 IT Systematic Group
AS57121 is operated by IT Systematic Group and registered with RIPE NCC (PL) since 2011-07-25.
It announces 5 IPv4 and 0 IPv6 prefixes, 100% of them RPKI valid.
RIPE RIS sees 5 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 2 facilities. Its peering policy is open.
| Name | IT Systematic Group |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Poland (PL) |
| Delegated on | 2011-07-25 |
| Network type | Cable/DSL/ISP, Regional |
| Peering policy | Open |
| IRR as-set | AS57121:AS-SYSTEMATIC |
| Prefixes (IPv4 / IPv6) | 5 / 0 |
| RPKI valid | 100% (5 / 5) |
| Upstreams and peers | 5 |
| Downstream networks | 0 |
| Website | systematic.pl |
Routing health
- AS57121 announces 5 IPv4 and 0 IPv6 prefixes.
- No IPv6 prefixes announced.
- All 5 announced prefixes are RPKI valid.
- 5 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
- 91.230.221.0/24
- 176.96.144.0/21
- 176.96.160.0/20
- 192.109.84.0/23
- 192.109.132.0/23
Upstreams and peers 5
The networks RIPE RIS sees next to AS57121 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 5 IPv4, 0 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| EPIX.Katowice | 1 | 10G | Yes |
| EPIX.Warszawa | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| 4 Data Center | Katowice | PL |
| LIM Warsaw | Warsaw | PL |
More about AS57121
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-15 08:31 UTC. The country is where the AS number was registered, not necessarily where the network operates.