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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 |
| — |
| 0 |
| AS50491CZ | ASN-CZ-PLANET-A-50491 T-Mobile Czech Republic a.s. | — | — | 0 |
| AS43708CZ | METRONET DATAMAT CZ s.r.o. | — | — | 0 |
| AS28755CZ | HA-VEL-TRANSIT-AS ha-vel internet s.r.o. | — | — | 0 |
| AS41509CZ | EQUIT-AS Patria Finance, a.s. | — | — | 0 |
| AS212204CZ | psk-cro FORTUNA GAME a.s. | — | — | 0 |
| AS41824CZ | IH-LOSAN-NET O2 Czech Republic, a.s. | — | — | 0 |
| AS201761CZ | GS-NET ISP Alliance a.s. | — | — | 0 |
| AS21142CZ | PRAGONET-TRANSIT-AS T-Mobile Czech Republic a.s. | — | — | 0 |
| AS206566CZ | SAVANACZ Webglobe, s.r.o. | — | — | 0 |
| AS203342CZ | RudolfNet ISP Alliance a.s. | — | — | 0 |
| AS207855CZ | ModernTV-Anycast SychrovNET s.r.o | — | — | 0 |
| AS47627CZ | NIXSK-RS NIX.CZ z.s.p.o. | — | — | 0 |
| AS50651CZ | WBD-EDGE-AS HBO Europe s.r.o. | — | — | 0 |
| AS8747CZ | Dial_Telecom-special Quantcom, a.s. | — | — | 0 |
| AS20884CZ | CZ-CTNET-AS O2 Czech Republic, a.s. | — | — | 0 |
| AS50100CZ | ModernTV-SK SychrovNET s.r.o | — | — | 0 |
| AS39896CZ | XHOSTING FIBER TELECOM s.r.o. | — | — | 0 |
| AS213594CZ | TECHART TECHart systems s.r.o. | — | — | 0 |
| AS203743CZ | BroumNet ISP Alliance a.s. | — | — | 0 |
| AS34070CZ | DATIN-AS BACKER COMPUTER s.r.o. | — | — | 0 |
| AS202912CZ | PETR-HADRABA Petr Hadraba | — | — | 0 |
| AS200678CZ | Arenis Komplet NET s.r.o. | — | — | 0 |
| AS201007CZ | CZ-TESCO Tesco Stores CR a.s. | — | — | 0 |
| AS2605CZ | CESNET CESNET z.s.p.o. | — | — | 0 |
| AS212362CZ | TREFCON-NET INERA.CZ s.r.o. | — | — | 0 |
| AS211890CZ | PROFISMS-AS ProfiSMS s.r.o. | — | — | 0 |
| AS61195CZ | PEERINGCZ-AS Peering.cz s.r.o. | — | — | 0 |
| AS33877CZ | ASOFX Druzstvo OFX | — | — | 0 |
| AS41711CZ | FREETEL-AS FreeTel, s.r.o. | — | — | 0 |
| AS210811CZ | AKSYSTEM AK SYSTEM s.r.o. | — | — | 0 |
| AS197566CZ | ASOKNET Livady s.r.o. | — | — | 0 |
| AS214952CZ | MJANIK-AS mjanik.net s.r.o. | — | 65.5K | 1 |
| AS57823CZ | ASKKNET Libor Kotoucek | — | — | 0 |
| AS197376CZ | TEST-TRANSIT-AS-IPV6PROJECT-EU Cloud4com s.r.o. | — | — | 0 |
| AS215571CZ | ITIXO ITIXO s.r.o. | — | — | 0 |
| AS206270CZ | TNETCZ-AS ISP Alliance a.s. | — | — | 0 |
| AS206344CZ | AUKRO Fortion Networks, s.r.o. | — | — | 0 |
| AS15485CZ | GTSNOVERA T-Mobile Czech Republic a.s. | — | — | 0 |
| AS213776CZ | ASTELECONNECT TeleConnect CZ s.r.o. | — | — | 0 |
| AS211898CZ | vpsfree vpsFree.cz, z.s. | — | — | 0 |
| AS198564CZ | ASELCOMA STARNET, s.r.o. | — | — | 0 |
| AS198121CZ | DNS4EU Whalebone, s.r.o. | 256 | 1 | 2 |
| AS48405CZ | CGI-CZ-AS1 CGI IT Czech Republic s.r.o. | 256 | — | 1 |
| AS200474CZ | CRFreeNet CRFreeNet, z.s. | 256 | 65.5K | 2 |
| AS214032CZ | BUDOVIT BUDOVIT s.r.o | 256 | 1 | 2 |
| AS215260CZ | EmeraldG-Net Emerald Group s.r.o. | 256 | — | 1 |