Country
Czechia
Address space that resolves to Czechia, and who operates it.
Where the space resolves, which is an estimate for the block, not a fix on any device. A network can hold space in many countries at once, so the same space is counted on more than one country page.
What this tells you
- 1,144 networks hold address space located in Czechia, run by 238 operators we can group by name.
- An estimated 8,906,328 people browse from Czechia, over a 60 day window. Counted where the users are, whatever registry their network belongs to.
- The largest operator we can identify by name here is O2 Czech Republic, a.s., holding 22% of the IPv4 space.
- VPN exit infrastructure here belongs to Apple Private Relay, HideMyAss, ProtonVPN and 19 other providers. An address in Czechia is not necessarily a person in Czechia.
Operators holding the most space here
Of the address space resolving to Czechia, networks we can group under a named operator account for 75% of its IPv4 and 37% of its IPv6. The table below divides that space. The rest belongs either to networks whose operator we cannot identify by name, or to space no network announces.
| Operator | IPv4 share | IPv6 share | |
|---|---|---|---|
| O2 Czech Republic, a.s. | 29% | 8% | |
| Vodafone Czech Republic a.s. | 18% | 7% | |
| T-Mobile Czech Republic a.s. | 15% | 2% | |
| CESNET z.s.p.o. | 12% | 0.7% | |
| PODA a.s. | 5% | 1.0% | |
| Quantcom, a.s. | 4% | 0.3% | |
| CETIN a.s. | 2% | 0.9% | |
| CEZNET s.r.o. | 2% | 5% | |
| STARNET, s.r.o. | 0.9% | 3% | |
| ISP Alliance a.s. | 0.6% | 7% | |
| Reliable Communications s.r.o. | 0.3% | 4% | |
| Jiri Tlapak | 0.2% | 6% | |
| NetX Networks a.s. | 0.1% | 6% | |
| Everything else (225 more) | 10% | 49% |
Networks holding the most space here
Networks announce 99% of this country's IPv4 space and 96% of its IPv6 space. The table below divides that space.
| Network | IPv4 share | IPv6 share | |
|---|---|---|---|
| AS5610 O2 Czech Republic, a.s. | 17% | 0.4% | |
| AS16019 Vodafone Czech Republic a.s. | 13% | 3% | |
| AS13036 T-Mobile Czech Republic a.s. | 11% | 0.6% | |
| AS2852 CESNET z.s.p.o. | 9% | 0.3% | |
| AS2571 DHL Information Services (Europe) s.r.o | 4% | <0.1% | |
| AS29208 Quantcom, a.s. | 3% | 0.1% | |
| AS30764 PODA a.s. | 2% | 0.3% | |
| AS42908 O2 Czech Republic, a.s. | 2% | 1% | |
| AS44489 STARNET, s.r.o. | 0.7% | 1% | |
| AS42306 Edera Group a.s. | 0.2% | 1% | |
| AS2118 Reliable Communications s.r.o. | 0.2% | 2% | |
| AS204666 Jiri Tlapak | 0.2% | 2% | |
| AS47232 ISP Alliance a.s. | 0.1% | 2% | |
| AS204860 NetX Networks a.s. | <0.1% | 2% | |
| Everything else (1,130 more) | 36% | 84% |
Organisations holding space here
Registered organisations account for 91% of this country's IPv4 space and 98% of its IPv6 space. The table below divides that space. Registered holders come from the bulk whois that RIPE, APNIC and AFRINIC publish. ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.
| Organisation | IPv4 share | IPv6 share | |
|---|---|---|---|
| O2 Czech Republic, a.s. | 24% | 3% | |
| Vodafone Czech Republic a.s. | 14% | 0.8% | |
| T-Mobile Czech Republic a.s. | 12% | 0.6% | |
| PODA a.s. | 4% | 0.4% | |
| Quantcom, a.s. | 3% | <0.1% | |
| CETIN a.s. | 2% | 0.3% | |
| CD-Telematika a.s. | 1% | <0.1% | |
| CEZNET s.r.o. | 1% | 2% | |
| Reliable Communications s.r.o. | 0.5% | 2% | |
| ISP Alliance a.s. | 0.1% | 4% | |
| United Networks SE | 0.1% | 1% | |
| NetX Networks a.s. | <0.1% | 1% | |
| It services company s.r.o. | - | 1% | |
| Everything else (1,976 more) | 37% | 84% |
Anonymizer signals
Flagged space covers 4% of this country's IPv4 space and 3% of its IPv6 space. The table below divides that space.
| Category | IPv4 share | IPv6 share | |
|---|---|---|---|
| Datacenter | 81% | 99% | |
| Open proxy | 58% | 41% | |
| VPN | 21% | 11% | |
| Not covered by any of these | - | - |
One address can carry more than one of these, so the rows add up to more than the space they cover.
VPN providers with exits here
Space published by a named VPN provider covers <0.1% of this country's IPv4 space and <0.1% of its IPv6 space. The table below divides that space. That counts only what providers publish as their own exits. Space merely associated with VPN use is wider, and is counted under Anonymizer signals above.
| Provider | IPv4 share | IPv6 share | |
|---|---|---|---|
| Apple Private Relay | 49% | 100% | |
| HideMyAss | 12% | - | |
| ProtonVPN | 10% | - | |
| NordVPN | 10% | - | |
| TunnelBear | 4% | - | |
| CyberGhost | 3% | - | |
| Private Internet Access | 2% | - | |
| AirVPN | 2% | <0.1% | |
| Mullvad | 0.8% | <0.1% | |
| Everything else (13 more) | 8% | - |
Every figure on this page is also JSON: /api/v2/directory/country/cz. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.