Autonomous system
AS2852: CESNET z.s.p.o.
Czechia · hosting / infrastructure
Estimated users is a published estimate of how many people use this network, extrapolated from 16,371 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 22,350 people using this network are in Czechia, 0.2% of everyone online there.
- The same operator runs 1 other network, listed below.
- 306 distinct organisations hold registered assignments inside this space, so an address here often belongs to one of their customers.
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 | 100% | 100% |
Organisations holding assignments here
Registered organisations account for 75% 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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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 | |
|---|---|---|---|
| Ceske vysoke uceni technicke v Praze | 10% | <0.1% | |
| Vysoka skola banska - Technicka univerzita Ostrava | 10% | <0.1% | |
| Univerzita obrany | 10% | - | |
| University of South Bohemia in Ceske Budejovice | 10% | <0.1% | |
| Zapadoceska univerzita v Plzni | 10% | <0.1% | |
| Technicka univerzita v Liberci | 10% | <0.1% | |
| Vysoka skola chemicko-technologicka v Praze | 10% | <0.1% | |
| Masarykova univerzita - Ustav vypocetni techniky | 10% | - | |
| Charles University | 5% | <0.1% | |
| CESNET z.s.p.o. | 4% | 100% | |
| Ministry of Education, Youth and Sports | 0.1% | <0.1% | |
| Everything else (295 more) | 8% | <0.1% |
Anonymizer signals
Flagged space covers <0.1% of this network's IPv4 space. The table below divides that space.
| Category | IPv4 share | |
|---|---|---|
| Open proxy | 100% | |
| Datacenter | 100% |
One address can carry more than one of these, so the rows add up to more than the space they cover.
Other networks from this operator
| ASN | Name | Estimated users |
|---|---|---|
| AS2605 | CESNET z.s.p.o. | - |
See the combined view for CESNET z.s.p.o., where all 2 of their networks are totalled together.
Every figure on this page is also JSON: /api/v2/directory/asn/2852. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.