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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.
714 autonomous systems registered to Czechia. Click an AS for detail.
| 11 |
| AS2571CZ | DHLNET - DHL Information Services (Europe) s.r.o | 438.5K | 100 |
| AS29208CZ | QUANTCOM-AS Quantcom, a.s. | 274.4K | 41 |
| AS28725CZ | CETIN-AS CETIN a.s. | 265.5K | 11 |
| AS30764CZ | PODA-AS PODA a.s. | 220.4K | 21 |
| AS42908CZ | CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | 183.3K | 44 |
| 1K |
| — |
| 2 |
| AS56353CZ | FIRSTLINE-AS First Line Software s.r.o. | 1K | — | 1 |
| AS51661CZ | ALLSTARNET UVT Internet s.r.o. | 1K | — | 4 |
| AS201608CZ | HovNet-AS HovNet-SERVIS s.r.o. | 1K | 65.5K | 4 |
| AS198814CZ | ASALPHASTYLSOFT ALPHA StylSoft, s.r.o. | 1K | 65.5K | 2 |
| AS198346CZ | NETFORMS-AS NETFORMS s.r.o. | 1K | 196.6K | 7 |
| AS200635CZ | INTERCONNECT pragmatel s.r.o. | 1K | 65.5K | 2 |
| AS205300CZ | ASSUNFOX Sunfox s.r.o. | 1K | — | 1 |
| AS211731CZ | MPSV-AS-CZ Ministry of labour and social affairs | 1K | 1 | 3 |
| AS202719CZ | PRANET Pranet s.r.o. | 1K | 65.5K | 2 |
| AS59664CZ | ASOPTON Opton s.r.o. | 1K | — | 1 |
| AS202657CZ | Hnojnik Pavel Jochim | 1K | 524.3K | 2 |
| AS209135CZ | FlowmonNetworks Flowmon Networks a.s. | 1K | 65.5K | 4 |
| AS207015CZ | POSITION Position s.r.o. | 1K | 65.5K | 2 |
| AS199405CZ | OSLAVANY-NET-AS Oslavany.NET, spolek | 1K | 65.5K | 2 |
| AS47727CZ | WARNETCZ-AS Warnet.cz s.r.o. | 1K | 65.5K | 2 |
| AS203645CZ | RYZNAR-AS Jan Ryznar | 1K | 3.6K | 27 |
| AS210111CZ | netcraftsolutions Netcraft Solutions s.r.o. | 1K | 524.3K | 2 |
| AS201559CZ | UNITED_NETWORKS_SE United Networks SE | 1K | 262.1K | 2 |
| AS59925CZ | GIGASERVER Seonet Multimedia s.r.o. | 1K | 65.5K | 2 |
| AS204567CZ | ASPCKBnet PCKBnet s.r.o. | 1K | — | 1 |
| AS57560CZ | ASXLNET XLNET s.r.o. | 1K | 1 | 3 |
| AS198143CZ | CESKAPOSTA-AS Ceska Posta s.p. | 1K | 1 | 4 |
| AS204351CZ | NAM NAM system, a.s. | 1K | — | 4 |
| AS204409CZ | cz-Prestonet Prestonet s.r.o. | 1K | 65.5K | 2 |
| AS197895CZ | ONYX-AS ONYX engineering, spol. s r.o. | 1K | 65.5K | 2 |
| AS208659CZ | innc INNC s.r.o. | 1K | 524.3K | 2 |
| AS57081CZ | SCARFBOT Scarfbot Technologies, s.r.o. | 1K | 524.3K | 2 |
| AS48602CZ | CONNECTPLUS Connect plus s.r.o. | 1K | 524.3K | 5 |
| AS208805CZ | SpolNet INTERCONNECT s.r.o. | 1K | — | 1 |
| AS205968CZ | ASGENERALNET GeneralNet s.r.o. | 1K | 524.3K | 2 |
| AS204570CZ | hornackynet KAZA.cz s.r.o. | 1K | — | 1 |
| AS34475CZ | Agrostroj Agrostroj Pelhrimov, a.s. | 1K | — | 4 |
| AS56344CZ | ASVIRIDIUM Viridium.cz s.r.o. | 1K | 1 | 5 |
| AS202774CZ | comtex ISP Alliance a.s. | 1K | 524.3K | 2 |
| AS50067CZ | cesal CESAL s.r.o. | 1K | 524.3K | 5 |
| AS62405CZ | Brouzdal Brouzdal, s.r.o. | 1K | 65.5K | 2 |
| AS209947CZ | mwifi M-wifi internet s.r.o. | 1K | 524.3K | 2 |
| AS197353CZ | INGMS_CZ NN Management Services, s.r.o. | 1K | — | 3 |
| AS206951CZ | BMBGreen BMB-Green s.r.o. | 1K | 524.3K | 2 |
| AS25238CZ | MONETA-CZ MONETA Money Bank, a.s. | 1K | 1 | 5 |
| AS59871CZ | HEUREKA_GROUP Heureka Group a.s. | 1K | 5 | 6 |
| AS58220CZ | PEGASNET Tomas Budai | 1K | 65.5K | 2 |
| AS204943CZ | NTVcable NTV cable s.r.o. | 1K | 524.3K | 2 |
| AS201116CZ | VybezekNET Vybezek.NET s.r.o. | 1K | 524.3K | 2 |
| AS51744CZ | ASJABLONKA Non-profit organization Jablonka.cz | 1K | 1 | 2 |
| AS44984CZ | Fortion Fortion Networks, s.r.o. | 1K | 65.5K | 2 |