Country
Czechia
Europe
European Union
CZ
IPv4 addresses
8,713,767
CIDR ranges
3,554
Organizations
50+
Top organizations
| Organization | IPs | Ranges |
|---|---|---|
| O2 Czech Republic, a.s. | 2.03M | 138 |
| Vodafone Czech Republic a.s. | 1.21M | 45 |
| T-Mobile Czech Republic a.s. | 1.00M | 38 |
| CESNET z.s.p.o. | 849.9K | 21 |
| PODA a.s. | 328.7K | 21 |
| Quantcom, a.s. | 265.5K | 31 |
| CETIN a.s. | 150.3K | 6 |
| CEZNET s.r.o. | 126.7K | 38 |
| CD-Telematika a.s. | 117.8K | 11 |
| RADIOKOMUNIKACE a.s. | 106.8K | 5 |
| DHL Information Services Europe s.r.o | 76.0K | 22 |
| Brno University of Technology | 67.1K | 11 |
| STARNET, s.r.o. | 64.8K | 25 |
| MasterDC s.r.o. | 57.3K | 29 |
| ha-vel internet s.r.o. | 49.7K | 8 |
| ALFA TELECOM s.r.o. | 46.8K | 41 |
| INTERNET CZ, a.s. | 45.8K | 11 |
| WIA spol. s.r.o. | 41.5K | 65 |
| ISP Alliance a.s. | 38.7K | 35 |
| CoProSys a.s. | 33.8K | 27 |
| CASABLANCA INT a.s. | 31.2K | 57 |
| SH.cz s.r.o. | 27.6K | 8 |
| Ipex A.S | 26.6K | 5 |
| FASTER CZ spol. s r.o. | 26.1K | 18 |
| AVONET, s.r.o. | 20.5K | 9 |
Top ASNs
| ASN | Name | IPs |
|---|---|---|
| AS5610 | O2 Czech Republic, a.s. | 1.54M |
| AS16019 | Vodafone Czech Republic a.s. | 1.21M |
| AS13036 | T-Mobile Czech Republic a.s. | 925.7K |
| AS2852 | CESNET z.s.p.o. | 849.9K |
| AS29208 | Quantcom, a.s. | 265.5K |
| AS30764 | PODA a.s. | 218.1K |
| AS42908 | O2 Czech Republic, a.s. | 183.3K |
| AS28725 | CETIN a.s. | 133.9K |
| AS16246 | O2 Czech Republic, a.s. | 133.1K |
| AS25512 | CD-Telematika a.s. | 117.8K |
| AS15425 | PODA a.s. | 110.6K |
| AS25248 | RADIOKOMUNIKACE a.s. | 106.8K |
| AS2571 | DHL Information Services Europe s.r.o | 76.0K |
| AS197451 | Brno University of Technology | 66.8K |
| AS12767 | T-Mobile Czech Republic a.s. | 66.6K |
| AS31246 | O2 Czech Republic, a.s. | 66.6K |
| AS44489 | STARNET, s.r.o. | 64.8K |
| AS24971 | MasterDC s.r.o. | 57.3K |
| AS12570 | O2 Czech Republic, a.s. | 50.2K |
| AS15935 | ha-vel internet s.r.o. | 49.7K |
| AS44546 | ALFA TELECOM s.r.o. | 46.8K |
| AS24806 | INTERNET CZ, a.s. | 45.8K |
| AS6740 | CEZNET s.r.o. | 42.0K |
| AS21430 | WIA spol. s.r.o. | 41.5K |
| AS25424 | CEZNET s.r.o. | 33.8K |