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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.
715 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. | 265.5K | 11 |
| AS30764CZ | PODA-AS PODA a.s. | 219.4K | 18 |
| AS42908CZ | CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | 183.3K | 44 |
| 256 |
| 1 |
| 2 |
| AS204917CZ | MiJa-AS Mi-Ja Javornik s.r.o. | 256 | — | 1 |
| AS204113CZ | CSIS Security Information Service | 256 | — | 1 |
| AS34487CZ | southpraguenet SouthPrague.Net, z.s. | 256 | 524.3K | 2 |
| AS205064CZ | rockawayx-uae RockawayX Infra s.r.o. | 256 | — | 1 |
| AS211594CZ | PEERNET Kleissner Investments s.r.o. | 256 | 524.3K | 2 |
| AS196943CZ | ASVISSADO Vissado s.r.o. | 256 | 1 | 2 |
| AS202857CZ | CZ-AS INIZIO Internet Media s.r.o. | 256 | — | 1 |
| AS213387CZ | TESUNET TeSuNet s.r.o. | 256 | — | 1 |
| AS209719CZ | CZ-MOD Ministerstvo Obrany | 256 | 1 | 2 |
| AS214757CZ | Jakub-Krsa Jakub Krsa | 256 | 89 | 15 |
| AS198494CZ | PREGIS PREGIS, a.s | 256 | 1 | 2 |
| AS44104CZ | LCJ-AS LCJ Invest, a.s. | 256 | — | 1 |
| AS213559CZ | asmybv1 MyOffice, s.r.o. | 256 | 524.3K | 2 |
| AS205724CZ | TSB-AS T.S.BOHEMIA a.s. | 256 | — | 1 |
| AS207231CZ | FuturNET-AS FuturNET, s.r.o. | 256 | 524.3K | 2 |
| AS201263CZ | AS-BRIX-CDN Brno University of Technology | 256 | 1 | 2 |
| AS210984CZ | ZEROPS-IO Zerops s.r.o. | 256 | 4.1K | 2 |
| AS197806CZ | STRLCAT Andrei Rys | 256 | 37 | 8 |
| AS213359CZ | MAZEL_BIZ_AS Jan Korinek | 256 | 524.3K | 2 |
| AS210367CZ | KZCR Krajska zdravotni, a.s. | 256 | 1 | 2 |
| AS215260CZ | EmeraldG-Net Emerald Group s.r.o. | 256 | — | 1 |
| AS212859CZ | KronosNet KXCOMM s.r.o. | 256 | 524.3K | 2 |
| AS215676CZ | GOODHOST GoodHost s.r.o. | 256 | 1 | 2 |
| AS12608CZ | IGLG-7F5-DATA IGLG Network CZ s.r.o. | 256 | 524.3K | 2 |
| AS198121CZ | DNS4EU Whalebone, s.r.o. | 256 | 1 | 2 |
| AS200070CZ | CZNIC-AS2 CZ.NIC, z.s.p.o. | 256 | 1 | 2 |
| AS210498CZ | Vysocina-hSOC Kraj Vysocina | 256 | 256 | 2 |
| AS205947CZ | NDC-ICT-SOLUTIONS NDC ICT Solutions s.r.o. | 256 | — | 1 |
| AS199059CZ | MauriceWard Maurice Ward & Co., s.r.o. | 256 | — | 1 |
| AS207354CZ | TeleConnect Teleconnect CZ s.r.o. | 256 | — | 1 |
| AS58215CZ | Omniline-net-as Omniline Investment s.r.o. | 256 | — | 1 |
| AS62298CZ | CSC Computer Systems Consulting s.r.o. | 256 | 524.3K | 2 |
| AS204183CZ | Omnivery-EU Omnivery s.r.o. | 256 | — | 1 |
| AS201594CZ | CTU_AS4 Czech Telecommunication Office | 256 | 65.5K | 2 |
| AS15380CZ | ANSCZ Air Navigation Services of the Czech Republic, state enterprise | 256 | 1 | 2 |
| AS56891CZ | ASCZRB Narodni rozvojova banka, a.s. | 256 | — | 1 |
| AS197875CZ | UNIPETROLRPA ORLEN Unipetrol RPA s.r.o. | 256 | — | 1 |
| AS48405CZ | CGI-CZ-AS1 CGI IT Czech Republic s.r.o. | 256 | — | 1 |
| AS211816CZ | ASERONX ERON X s.r.o. | 256 | — | 1 |
| AS206908CZ | PL-FORTUNA-GAME FORTUNA GAME a.s. | 256 | — | 1 |
| AS211274CZ | QCZ Quadruple a.s. | 256 | 262.1K | 5 |
| AS206683CZ | MSIC-AS Moravskoslezske inovacni centrum Ostrava, a.s. | 256 | — | 1 |
| AS207391CZ | EDGROUP E LINKX a.s. | 256 | — | 1 |
| AS202073CZ | ABS-ACLOUD-CLIENTS1 Itego a.s. | 256 | — | 1 |
| AS60218CZ | ASIT8 IT8 - Informacni technologie s.r.o. | 256 | 1 | 2 |
| AS206159CZ | cz-fresh Fresh Data s.r.o. | 256 | 65.5K | 2 |