| 78.128.128.0/17 | CESNET | |
| 146.102.0.0/16 | Prague | |
| 147.32.0.0/15 | The whole IPv4 address space | |
| 147.228.0.0/16 | Plzen | |
| 147.230.0.0/15 | The whole IPv4 address space | |
| 147.251.0.0/16 | Brno | |
| 158.194.0.0/16 | Olomouc | |
| 158.196.0.0/16 | Ostrava | |
| 160.216.0.0/15 | The whole IPv4 address space | |
| 185.8.160.0/22 | CESNET | |
| 193.84.32.0/20 | Prague 6 | |
| 193.84.53.0/24 | Prague | |
| 193.84.55.0/24 | Prague | |
| 193.84.56.0/21 | Prague | |
| 193.84.80.0/22 | Prague 6 | |
| 193.84.116.0/23 | Prague 6 | |
| 193.84.160.0/20 | Rez u Prahy | |
| 193.84.192.0/19 | Opava, Karvina | |
| 193.84.192.0/20 | Opava, Karvina | |
| 193.84.208.0/20 | Opava, Karvina | |
| 195.113.0.0/16 | CESNET | |
| 195.178.64.0/19 | CESNET | |
| 147.32.80.0/24 | Prague | |
