IP address ranges in Czechia
Czechia holds 12,210 IPv4 segments in the IP99 geolocation database, covering 8,619,482 addresses. In the 7 days to 27 October 2026 we newly captured 10,826 proxy-type addresses there.
Network usage types
The ratio of residential broadband to datacenter address space is the most direct indicator of what kind of proxy risk a region carries: a high datacenter share means datacenter proxies are more likely; a high residential share means home-broadband proxies and dial-up pools are.
| Usage type | Segments | Share |
|---|---|---|
| Residential broadband | 1,476 | 47.5% |
| Mobile network | 872 | 28.1% |
| Datacenter | 465 | 15.0% |
| Gateway / NAT egress | 191 | 6.1% |
| Education network | 63 | 2.0% |
| Government | 23 | 0.7% |
| CDN node | 14 | 0.5% |
| Organisation | 3 | 0.1% |
Regions
| Region | Segments | Share |
|---|---|---|
| Prague | 4,196 | 34.4% |
| Moravian-Silesian Region | 2,164 | 17.7% |
| Central Bohemia | 1,228 | 10.1% |
| South Moravian | 970 | 7.9% |
| Ústecký kraj | 682 | 5.6% |
| Kralovehradecky kraj | 458 | 3.8% |
| Zlin | 385 | 3.2% |
| Olomouc Region | 296 | 2.4% |
| Vysocina | 283 | 2.3% |
| Pardubice Region | 269 | 2.2% |
| Plzensky | 268 | 2.2% |
| Praha | 258 | 2.1% |
| Liberecký kraj | 249 | 2.0% |
| South Bohemian Region | 226 | 1.9% |
| Carlsbad Region | 117 | 1.0% |
| Pardubicky | 47 | 0.4% |
| Jihocesky | 44 | 0.4% |
| Olomoucky | 27 | 0.2% |
| Moravskoslezsky kraj | 25 | 0.2% |
| Moravskoslezsky | 10 | 0.1% |
| Karlovarsky | 5 | 0.0% |
| Hradec Kralove Region | 1 | 0.0% |
| Olomoucky kraj | 1 | 0.0% |
| Ustecky | 1 | 0.0% |
Cities
| City | Segments | Share |
|---|---|---|
| Prague | 4,196 | 34.4% |
| Ostrava | 1,409 | 11.5% |
| Brno | 520 | 4.3% |
| Chomutov | 202 | 1.7% |
| Hostivice | 183 | 1.5% |
| Nové Město | 181 | 1.5% |
| Příbram | 168 | 1.4% |
| Olomouc | 154 | 1.3% |
| Vestec | 138 | 1.1% |
| Pilsen | 133 | 1.1% |
| Vysehrad | 127 | 1.0% |
| Zlín | 106 | 0.9% |
| Ludgeřovice | 95 | 0.8% |
| Liberec | 90 | 0.7% |
| České Budějovice | 86 | 0.7% |
| Hradec Králové | 84 | 0.7% |
| Nový Jičín | 78 | 0.6% |
| Karlin | 75 | 0.6% |
| Žatec | 70 | 0.6% |
| Jihlava | 67 | 0.5% |
Autonomous systems
An ASN identifies the operator of a network. Addresses under one ASN usually share risk characteristics, which is why risk controls often act on whole ASNs rather than single addresses. Operator names are not published here — the machine-readable identity is the ASN.
| ASN | Segments |
|---|---|
| AS16019 | 1,966 |
| AS5610 | 1,634 |
| AS13036 | 1,134 |
| AS210712 | 348 |
| AS30764 | 342 |
| AS47232 | 264 |
| AS29208 | 255 |
| AS16246 | 246 |
| AS15425 | 211 |
| AS42908 | 208 |
Look up a single address
Free, no signup: curl https://ip99.com/v1/ip/8.8.8.8 — see the API documentation.
Go deeper
What is my IP address? · How IP location works, and how accurate it is · What an IP address lookup can and cannot tell you