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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 |
| 256 |
| 1 |
| 2 |
| AS51025CZ | CONNECT-TST-AS VSHosting s.r.o. | 256 | — | 1 |
| AS201594CZ | CTU_AS4 Czech Telecommunication Office | 256 | 65.5K | 2 |
| AS215718CZ | IBAGroup IBA Group a.s. | 256 | — | 1 |
| AS56891CZ | ASCZRB Narodni rozvojova banka, a.s. | 256 | — | 1 |
| AS196943CZ | ASVISSADO Vissado s.r.o. | 256 | 1 | 2 |
| AS198494CZ | PREGIS PREGIS, a.s | 256 | 1 | 2 |
| AS199604CZ | KU-AS OLOMOUCKY KRAJ | 256 | 1 | 2 |
| AS34487CZ | southpraguenet SouthPrague.Net, z.s. | 256 | 524.3K | 2 |
| AS58215CZ | Omniline-net-as Omniline Investment s.r.o. | 256 | — | 1 |
| AS197875CZ | UNIPETROLRPA ORLEN Unipetrol RPA s.r.o. | 256 | — | 1 |
| AS211700CZ | DEXUS Dexus Internet s.r.o. | 256 | 65.5K | 2 |
| AS212859CZ | KronosNet KXCOMM s.r.o. | 256 | 524.3K | 2 |
| AS210915CZ | DOMINIKPASTO Dominik Pastorek | 256 | 10 | 4 |
| AS210498CZ | Vysocina-hSOC Kraj Vysocina | 256 | 256 | 2 |
| AS211594CZ | PEERNET Kleissner Investments s.r.o. | 256 | 524.3K | 2 |
| AS201263CZ | AS-BRIX-CDN Brno University of Technology | 256 | 1 | 2 |
| AS208422CZ | INFINITY-AS Infinity Telecom, s.r.o. | 256 | 1 | 2 |
| AS200474CZ | CRFreeNet CRFreeNet, z.s. | 256 | 65.5K | 2 |
| AS28892CZ | CUZK-NET Cesky urad zememericky a katastralni | 256 | 1 | 2 |
| AS48405CZ | CGI-CZ-AS1 CGI IT Czech Republic s.r.o. | 256 | — | 1 |
| AS211085CZ | amccomp-master-praha mapnet IT services s.r.o. | 256 | 524.3K | 3 |
| AS207391CZ | EDGROUP E LINKX a.s. | 256 | — | 1 |
| AS202073CZ | ABS-ACLOUD-CLIENTS1 Itego a.s. | 256 | — | 1 |
| AS215806CZ | CZ-ALBERT-AS Albert Ceska republika, s.r.o. | 256 | — | 1 |
| AS207354CZ | TeleConnect Teleconnect CZ s.r.o. | 256 | — | 1 |
| AS206468CZ | TREBORADICENET-AS Treboradice.net z.s. | 256 | 65.5K | 2 |
| AS211334CZ | Master_IT_Technologies-2 MASTER IT Technologies, a.s. | 256 | — | 1 |
| AS198121CZ | DNS4EU Whalebone, s.r.o. | 256 | 2 | 3 |
| AS213558CZ | spinoco-ushc Spinoco a.s. | 256 | — | 1 |
| AS215354CZ | ENTRANOVA-AS ENTRANOVA IT s.r.o. | 256 | — | 1 |
| AS210984CZ | ZEROPS-IO Zerops s.r.o. | 256 | 4.1K | 2 |
| AS210436CZ | ASITGLOBE IT Globe s.r.o. | 256 | 2 | 3 |
| AS204113CZ | CSIS Security Information Service | 256 | — | 1 |
| AS196762CZ | ASALKOM ALKOM Security, a.s. | 256 | — | 1 |
| AS39453CZ | UZIS-AS Ustav zdravotnickych informaci a statistiky Ceske republiky | 256 | — | 1 |
| AS199059CZ | MauriceWard Maurice Ward & Co., s.r.o. | 256 | — | 1 |
| AS213387CZ | TESUNET TeSuNet s.r.o. | 256 | — | 1 |
| AS9053CZ | VSHOSTING-CDN VSHosting s.r.o. | 256 | 3 | 4 |
| AS197806CZ | STRLCAT Andrei Rys | 256 | 208 | 5 |
| AS205947CZ | NDC-ICT-SOLUTIONS NDC ICT Solutions s.r.o. | 256 | — | 1 |
| AS199806CZ | DCIT-AS-CZ DCIT, a.s. | 256 | 1 | 2 |
| AS62298CZ | CSC Computer Systems Consulting s.r.o. | 256 | 524.3K | 2 |
| AS215260CZ | EmeraldG-Net Emerald Group s.r.o. | 256 | — | 1 |
| AS209719CZ | CZ-MOD Ministerstvo Obrany | 256 | 1 | 2 |
| AS205064CZ | rockawayx-uae RockawayX Infra s.r.o. | 256 | — | 1 |
| AS203299CZ | IHNET NetX Networks a.s. | 256 | 65.5K | 2 |