Registered organisation
CEZNET s.r.o.
Address space registered to CEZNET s.r.o., 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 ARIN and LACNIC do not publish theirs, so holders in North and South America are largely missing here.
IPv4 addresses
115,104
IPv6 /64s
231,961,985,037
Registered blocks
48
Countries
1
What this tells you
- Holds 115,104 IPv4 addresses and 231,961,985,037 IPv6 /64 networks across 48 registered blocks.
- Announced by 5 networks, the largest being AS25424 CEZNET s.r.o. at 97% of the IPv4 space.
- All of the space we can place resolves to Czechia.
Networks announcing this space
| Network | IPv4 share | IPv6 share | |
|---|---|---|---|
| AS25424 CEZNET s.r.o. | 97% | 61% | |
| AS39791 Telco Pro Services, a. s. | 1% | <0.1% | |
| AS51449 Kabelova televize Usti nad Orlici, spol. s r. o. | 0.9% | 2% | |
| AS47232 ISP Alliance a.s. | 0.2% | - | |
| Everything else, including space not announced (1 more) | - | 37% |
Countries this space resolves to
| Country | IPv4 share | IPv6 share | |
|---|---|---|---|
| Czechia | 100% | 100% |
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.