AS12570
O2 Czech Republic, A.S. — o2.cz
Summary
| Country |
 Czechia
|
| Organization | O2 Czech Republic, A.S. |
| Domain | o2.cz |
| Number of IPv4 | 53,760 |
| Number of IPv6 | 7.1305× 1029 |
| AS Type | ISP |
| Registry | RIPE NCC |
| Allocated | May 27, 2002 (about 23 years ago) |
| Updated | June 20, 2024 (about 10 months ago) |
IP Ranges
AS12570 announces 11 IPv4 ranges and 2 IPv6 ranges.
That's a total of 53,760 IPv4 addresses and 7.1305× 1029 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 80.78.144.0/20 |
Freebone S.R.O.
|
4,096 | RIPE NCC | ASSIGNED PA |
| 88.83.224.0/19 |
Itself Ltd.
|
8,192 | RIPE NCC | ASSIGNED PA |
| 89.190.40.0/21 |
Velbnet, S.R.O.
|
2,048 | RIPE NCC | ASSIGNED PA |
| 89.190.48.0/20 |
Catv Zidlochovice
|
4,096 | RIPE NCC | ASSIGNED PA |
| 109.105.32.0/19 |
Nga Services, Spol. S R.O., Hodice
|
8,192 | RIPE NCC | ASSIGNED PA |
| 185.8.188.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 193.17.248.0/22 |
Zeal S.R.O.
|
1,024 | RIPE NCC | ASSIGNED PI |
| 195.78.122.0/23 |
Zeal S.R.O.
|
512 | RIPE NCC | ASSIGNED PI |
| 212.4.128.0/19 |
Self Servis Catv Ivancice
|
8,192 | RIPE NCC | ASSIGNED PA |
| 212.96.160.0/19 |
Czechbone Ltd.
|
8,192 | RIPE NCC | ASSIGNED PA |
| 213.211.32.0/19 |
Cmts Kunstat
|
8,192 | RIPE NCC | ASSIGNED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:4ba8::/29 |
ITSELF
|
6.3383× 1029 | RIPE NCC | ASSIGNED |
| 2a0b:bb41::/32 |
Netstone S.R.O.
|
7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
Peers
AS12570 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.
Upstreams
AS12570 connects to the global Internet via at least 1 upstream provider. In this setup, AS12570 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS12570 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS12570's role in extending Internet access beyond its own infrastructure.