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How Czechia ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to Czechia over time.
The largest autonomous systems registered to Czechia by IPv4 footprint.
Czechia against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
717 autonomous systems registered to Czechia. Click an AS for detail.
| 14 |
| AS2571CZ | DHLNET - DHL Information Services (Europe) s.r.o | 438.5K | 101 |
| AS29208CZ | QUANTCOM-AS Quantcom, a.s. | 274.4K | 41 |
| AS28725CZ | CETIN-AS CETIN a.s. | 266.5K | 12 |
| AS30764CZ | PODA-AS PODA a.s. | 220.4K | 21 |
| AS42908CZ | CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | 183.3K | 44 |
| 1K |
| 1 |
| 5 |
| AS51744CZ | ASJABLONKA Non-profit organization Jablonka.cz | 1K | 1 | 2 |
| AS198103CZ | CCS-CZ CCS Ceska spolecnost pro platebni karty s.r.o. | 1K | — | 3 |
| AS205300CZ | ASSUNFOX Sunfox s.r.o. | 1K | — | 1 |
| AS204351CZ | NAM NAM system, a.s. | 1K | — | 4 |
| AS34819CZ | h17 H17 Networks, s.r.o. | 1K | 524.3K | 2 |
| AS201163CZ | KB-AS-CZ Komercni banka, a.s. | 1K | — | 3 |
| AS212224CZ | Traveliana Coolhousing s.r.o. | 1K | 65.5K | 2 |
| AS203411CZ | FORTUNA-GAME-PUB FORTUNA GAME a.s. | 1K | — | 4 |
| AS212876CZ | CZ-PARDUBICKYKRAJ Pardubicky Kraj | 1K | 524.3K | 2 |
| AS12984CZ | PILSFREE PilsFree, z. s. | 1K | 524.3K | 2 |
| AS201533CZ | UNITED_NETWORKS_SE United Networks SE | 1K | — | 1 |
| AS204567CZ | ASPCKBnet PCKBnet s.r.o. | 1K | — | 1 |
| AS202979CZ | ngaservices NGA Services, spol. s r.o. | 1K | 524.3K | 2 |
| AS198143CZ | CESKAPOSTA-AS Ceska Posta s.p. | 1K | 1 | 4 |
| AS197895CZ | ONYX-AS ONYX engineering, spol. s r.o. | 1K | 65.5K | 2 |
| AS56344CZ | ASVIRIDIUM Viridium.cz s.r.o. | 1K | 1 | 5 |
| AS209135CZ | FlowmonNetworks Flowmon Networks a.s. | 1K | 65.5K | 4 |
| AS207015CZ | POSITION Position s.r.o. | 1K | 65.5K | 2 |
| AS205345CZ | HORALNET HoralNET s.r.o. | 1K | 524.3K | 2 |
| AS56827CZ | ASMIRNETCZ mirnet s.r.o. | 1K | — | 1 |
| AS47749CZ | ORIFLAME-AS ORIFLAME SOFTWARE s.r.o. | 1K | 1 | 4 |
| AS204409CZ | cz-Prestonet Prestonet s.r.o. | 1K | 65.5K | 2 |
| AS56353CZ | FIRSTLINE-AS First Line Software s.r.o. | 1K | — | 1 |
| AS206177CZ | sitepark SitePark s.r.o. | 1K | 525.8K | 8 |
| AS202719CZ | PRANET Pranet s.r.o. | 1K | 65.5K | 2 |
| AS208847CZ | ASfryzl Martin Fryzl | 1K | 524.3K | 2 |
| AS199350CZ | mfcr Ministerstvo financi | 1K | 65.5K | 2 |
| AS203645CZ | RYZNAR-AS Jan Ryznar | 1K | 3.6K | 27 |
| AS208466CZ | egdsro EG.D, s.r.o. | 1K | — | 1 |
| AS207153CZ | cz-stream-it Stream-iT, s.r.o. | 1K | — | 1 |
| AS202556CZ | ASKRIVONET Blond & Brown s.r.o. | 1K | 256 | 2 |
| AS13199CZ | DOUBRAVA-NET Jaroslav Doubrava | 1K | 524.3K | 2 |
| AS205234CZ | bkom Brnenske komunikace a.s. | 1K | — | 4 |
| AS41779CZ | LAJSINET LajsiNET s.r.o. | 1K | 524.3K | 2 |
| AS207886CZ | ECOMPEU-CZ ECOMP spol s r.o. | 1K | 524.3K | 6 |
| AS49573CZ | ASJIMMY JimmyNet s.r.o. | 1K | 524.3K | 2 |
| AS208060CZ | DRMAX-BDC Dr. Max BDC, s.r.o. | 1K | 524.3K | 4 |
| AS202872CZ | KMENET KME, spol. s r. o. | 1K | 65.5K | 3 |
| AS198814CZ | ASALPHASTYLSOFT ALPHA StylSoft, s.r.o. | 1K | 65.5K | 2 |
| AS213152CZ | NBU Narodni bezpecnostni urad Czech Republic | 1K | 524.3K | 3 |
| AS25238CZ | MONETA-CZ MONETA Money Bank, a.s. | 1K | 1 | 5 |
| AS57904CZ | ASVEVYNET Vevynet s.r.o. | 1K | — | 1 |
| AS205002CZ | AS_IWAO CUBESOL, s.r.o. | 1K | 524.3K | 2 |
| AS57007CZ | ASNITEX NITEX ISP s.r.o. | 1K | 1 | 2 |
| AS204886CZ | metro-hu Metropolitni sit Humpolec spol. s r.o. | 1K | 65.5K | 2 |
| AS198171CZ | WebglobeRS Webglobe, s.r.o. | 1K | 65.5K | 2 |