Autonomous system
AS24971: MasterDC s.r.o.
Czechia · hosting / infrastructure
Estimated users is a published estimate of how many people use this network, extrapolated from 983 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
- Classified as hosting infrastructure. The handful of users measured behind it are people browsing from servers, not subscribers.
- An estimated 1,303 people using this network are in Czechia, <0.1% of everyone online there.
- 239 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 | 99% | 100% | |
| Netherlands | 0.4% | <0.1% | |
| Everything else (1 more) | - | <0.1% |
Organisations holding assignments here
Registered organisations account for 96% 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 ARIN and LACNIC do not publish theirs, so space held in North and South America is largely unattributed here.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 | |
|---|---|---|---|
| MasterDC s.r.o. | 60% | 5% | |
| vpsFree.cz, z.s. | 6% | <0.1% | |
| NETIO Solutions s.r.o. | 4% | 5% | |
| ServerNow s.r.o. | 3% | 5% | |
| Virtualmaster, s.r.o. | 3% | - | |
| Etnetera Core a.s. | 3% | 38% | |
| AdminIT, s. r. o. | 2% | 38% | |
| Milos Kalerta, Exmasters Hosting | 2% | - | |
| Bydzovsky s.r.o. | 2% | 5% | |
| ANAFRA a.s. | 0.5% | 5% | |
| Everything else (229 more) | 15% | <0.1% |
Anonymizer signals
Flagged space covers 99% of this network's IPv4 space and 100% of its IPv6 space. The table below divides that space.
| Category | IPv4 share | IPv6 share | |
|---|---|---|---|
| Datacenter | 100% | 100% | |
| Open proxy | 0.4% | - |
Every figure on this page is also JSON: /api/v2/directory/asn/24971. Breakdowns paginate from there, so a table showing the largest rows here returns all of them. Read the API.