Autonomous system
AS5610: O2 Czech Republic, a.s.
Czechia · consumer ISP
Estimated users is a published estimate of how many people use this network, extrapolated from 1,913,669 observations over a 60 day window. Large operators often run several networks, so a low figure can mean their customers reach the internet through a sibling network.
What this tells you
- An estimated 2,537,036 people use this network, from 1,913,669 observations over a 60 day window, which puts it among the larger access networks in Czechia.
- Its space resolves to 4 countries, concentrated almost entirely in Czechia (99% of the IPv4 space), so it is effectively a single-market network despite the spread.
- Of those, 2,537,036 are in Czechia, 29% of everyone online there.
- The same operator runs 15 other networks, the largest listed below.
Countries in this space
Space we can place in a country covers 100% of this network's IPv4 space and 100% of its IPv6 space. The table below divides that space.
| Country | IPv4 share | IPv6 share | |
|---|---|---|---|
| Czechia | 99% | 100% | |
| Slovakia | 1.0% | - | |
| Everything else (2 more) | <0.1% | - |
Organisations holding assignments here
Registered organisations account for 99% of this network's IPv4 space and 100% 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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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. | 99% | 100% | |
| CETIN Networks, s.r.o. | 1.0% | - | |
| PorubaNET | 0.1% | - | |
| Everything else (10 more) | 0.3% | <0.1% |
Anonymizer signals
Flagged space covers 4% of this network's IPv4 space. The table below divides that space.
| Category | IPv4 share | |
|---|---|---|
| Open proxy | 100% |
Other networks from this operator (15 in total)
| ASN | Name | Estimated users |
|---|---|---|
| AS16246 | O2 Czech Republic, a.s. | 64,334 |
| AS12570 | O2 Czech Republic, a.s. | 37,130 |
| AS42908 | O2 Czech Republic, a.s. | 27,661 |
| AS31246 | O2 Czech Republic, a.s. | 9,719 |
| AS41046 | O2 Czech Republic, a.s. | 5,466 |
| AS49767 | O2 Czech Republic, a.s. | 3,656 |
| AS29321 | O2 Czech Republic, a.s. | 987 |
| AS20884 | O2 Czech Republic, a.s. | - |
See the combined view for O2 Czech Republic, a.s., where all 16 of their networks are totalled together.
Every figure on this page is also JSON: /api/v2/directory/asn/5610. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.