Registered organisation
O2 Czech Republic, a.s.
Address space registered to O2 Czech Republic, a.s., and where it is announced from.
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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.
What this tells you
- Holds 1,983,664 IPv4 addresses and 390,841,958,400 IPv6 /64 networks across 115 registered blocks.
- Announced by 6 networks, the largest being AS42908 O2 Czech Republic, a.s. at 99% of the IPv4 space.
- All of the space we can place resolves to Czechia.
Networks announcing this space
Space announced by a network covers 100% of this holder's IPv4 space and 100% of its IPv6 space. The table below divides that space.
| Network | IPv4 share | IPv6 share | |
|---|---|---|---|
| AS42908 O2 Czech Republic, a.s. | 99% | 100% | |
| AS56566 SATT a.s. | 0.1% | - | |
| AS198282 CAH Building s.r.o. | 0.1% | - | |
| Everything else (3 more) | <0.1% | - |
Countries this space resolves to
Space we can place in a country covers 100% of this holder's IPv4 space and 100% of its IPv6 space. The table below divides that space.
| Country | IPv4 share | IPv6 share | |
|---|---|---|---|
| Czechia | 100% | 100% |
An operator of the same name runs networks of its own: see O2 Czech Republic, a.s. for the networks side of the same company.
Holding a block is a registry fact, not a physical one. The organisation named here is who the block is assigned to, which is often a customer of the network operator announcing it.
Every figure on this page is also JSON: /api/v2/directory/org/o2-czech-republic-a-s. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.