Autonomous System details
AS42908
O2 Czech Republic, A.S. — o2.cz
Summary
| Country |
 Czechia
|
| Organization | O2 Czech Republic, A.S. |
| Domain | o2.cz |
| Number of IPv4 | 183,296 |
| Number of IPv6 | 3.0156× 1030 |
| AS Type | ISP |
| Registry | RIPE NCC |
| Allocated | May 09, 2007 (about 18 years ago) |
| Updated | April 01, 2025 (about 17 days ago) |
IP Ranges
AS42908 announces 35 IPv4 ranges and 12 IPv6 ranges.
That's a total of 183,296 IPv4 addresses and 3.0156× 1030 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 5.102.48.0/20 |
CZ-NORDICTELECOMREGIONAL-20120627
|
4,096 | RIPE NCC | ASSIGNED PA |
| 31.10.56.0/21 |
CZ-NORDICTELECOMREGIONAL-20110414
|
2,048 | RIPE NCC | ASSIGNED PA |
| 45.159.116.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 46.183.56.0/21 |
O2 Czech Republic, A.S.
|
2,048 | RIPE NCC | ALLOCATED PA |
| 46.231.72.0/21 |
CZ-NORDICTELECOMREGIONAL-20110207
|
2,048 | RIPE NCC | ASSIGNED PA |
| 77.95.192.0/21 |
CZ-NORDICTELECOMREGIONAL-20070613
|
2,048 | RIPE NCC | ASSIGNED PA |
| 78.136.128.0/18 |
CZ-NORDICTELECOMREGIONAL-20070509
|
16,384 | RIPE NCC | ASSIGNED PA |
| 80.78.136.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 80.79.0.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 80.87.176.0/20 |
CZ-NORDICTELECOMREGIONAL-20050520
|
4,096 | RIPE NCC | ASSIGNED PA |
| 80.90.128.0/20 |
CZ-NORDICTELECOMREGIONAL-20081007
|
4,096 | RIPE NCC | ASSIGNED PA |
| 80.243.236.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 80.251.240.0/20 |
CZ-NORDICTELECOMREGIONAL-20051121
|
4,096 | RIPE NCC | ASSIGNED PA |
| 88.81.64.0/19 |
CZ-NORDICTELECOMREGIONAL-20051202
|
8,192 | RIPE NCC | ASSIGNED PA |
| 91.187.32.0/19 |
CZ-NORDICTELECOMREGIONAL-20061116
|
8,192 | RIPE NCC | ASSIGNED PA |
| 92.61.80.0/20 |
CZ-NORDICTELECOMREGIONAL-20071218
|
4,096 | RIPE NCC | ASSIGNED PA |
| 93.92.48.0/21 |
CZ-NORDICTELECOMREGIONAL-20080123
|
2,048 | RIPE NCC | ASSIGNED PA |
| 93.93.32.0/21 |
CZ-NORDICTELECOMREGIONAL-20120813
|
2,048 | RIPE NCC | ASSIGNED PA |
| 94.241.64.0/18 |
CZ-NORDICTELECOMREGIONAL-20080929
|
16,384 | RIPE NCC | ASSIGNED PA |
| 109.108.96.0/19 |
CZ-NORDICTELECOMREGIONAL-20091027
|
8,192 | RIPE NCC | ASSIGNED PA |
| 176.102.128.0/19 |
O2 Czech Republic, A.S.
|
8,192 | RIPE NCC | ALLOCATED PA |
| 178.17.80.0/20 |
CZ-NORDICTELECOMREGIONAL-20100318
|
4,096 | RIPE NCC | ASSIGNED PA |
| 185.78.12.0/22 |
CZ-NORDICTELECOMREGIONAL-20141120
|
1,024 | RIPE NCC | ASSIGNED PA |
| 185.82.236.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 185.108.60.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 185.157.240.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 188.119.96.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 193.42.128.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 193.107.252.0/22 |
O2 Czech Republic, A.S.
|
1,024 | RIPE NCC | ALLOCATED PA |
| 213.19.0.0/17 |
CZ-NORDICTELECOMREGIONAL-20030926
|
32,768 | RIPE NCC | ASSIGNED PA |
| 213.155.32.0/19 |
CZ-NORDICTELECOMREGIONAL-20071207
|
8,192 | RIPE NCC | ASSIGNED PA |
| 213.250.192.0/18 |
CZ-NORDICTELECOMREGIONAL-20030228
|
16,384 | RIPE NCC | ASSIGNED PA |
| 217.170.96.0/20 |
CZ-NORDICTELECOMREGIONAL-20081121
|
4,096 | RIPE NCC | ASSIGNED PA |
| 217.196.112.0/20 |
O2 Czech Republic, A.S.
|
4,096 | RIPE NCC | ALLOCATED PA |
| 217.197.144.0/20 |
CZ-NORDICTELECOMREGIONAL-20041021
|
4,096 | RIPE NCC | ASSIGNED PA |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2001:67c:13c4::/48 |
O2 Czech Republic, A.S.
|
1.2089× 1024 | RIPE NCC | ASSIGNED PI |
| 2a00:e4c0::/32 |
Cz-nordictelecomregional-20120425 Bb N Infr Ipv6
|
7.9228× 1028 | RIPE NCC | ASSIGNED |
| 2a01:9f40::/29 |
Mbb Customers Dchp And Ppoe
|
6.3383× 1029 | RIPE NCC | AGGREGATED-BY-LIR |
| 2a02:2088::/32 |
O2 Czech Republic, A.S.
|
7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a02:2088:1000::/36 |
O2 Czech Republic, A.S.
|
4.9518× 1027 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a02:2428::/32 |
CZ-NORDICTELECOMREGIONAL-20100915 MBB BNG
|
7.9228× 1028 | RIPE NCC | AGGREGATED-BY-LIR |
| 2a02:2588::/29 |
O2 Czech Republic, A.S.
|
6.3383× 1029 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a03:1600::/32 |
O2 Czech Republic, A.S.
|
7.9228× 1028 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a03:7a00::/32 |
Cz-nordictelecomregional-20110207 B2b-cpe Infrastructure
|
7.9228× 1028 | RIPE NCC | AGGREGATED-BY-LIR |
| 2a03:a820::/32 |
Cz-nordictelecomregional-20160219 B2B Regional Pe2 Customers
|
7.9228× 1028 | RIPE NCC | AGGREGATED-BY-LIR |
| 2a07:cc80::/29 |
O2 Czech Republic, A.S.
|
6.3383× 1029 | RIPE NCC | ALLOCATED-BY-RIR |
| 2a0c:8b40::/29 |
Mbb Customers Dchp And Ppoe
|
6.3383× 1029 | RIPE NCC | AGGREGATED-BY-LIR |
Peers
AS42908 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.
Upstreams
AS42908 connects to the global Internet via at least 1 upstream provider. In this setup, AS42908 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.