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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 |
| AS199604CZ | KU-AS OLOMOUCKY KRAJ | 256 | 1 | 2 |
| AS49262CZ | ATCCZ1 Ataccama Software, s.r.o. | 256 | 524.3K | 2 |
| AS200474CZ | CRFreeNet CRFreeNet, z.s. | 256 | 65.5K | 2 |
| AS205724CZ | TSB-AS T.S.BOHEMIA a.s. | 256 | — | 1 |
| AS208422CZ | INFINITY-AS Infinity Telecom, s.r.o. | 256 | 1 | 2 |
| AS213558CZ | spinoco-ushc Spinoco a.s. | 256 | — | 1 |
| AS197875CZ | UNIPETROLRPA ORLEN Unipetrol RPA s.r.o. | 256 | — | 1 |
| AS51025CZ | CONNECT-TST-AS VSHosting s.r.o. | 256 | — | 1 |
| AS206908CZ | PL-FORTUNA-GAME FORTUNA GAME a.s. | 256 | — | 1 |
| AS215676CZ | GOODHOST GoodHost s.r.o. | 256 | 1 | 2 |
| AS214757CZ | Jakub-Krsa Jakub Krsa | 256 | 89 | 15 |
| AS39453CZ | UZIS-AS Ustav zdravotnickych informaci a statistiky Ceske republiky | 256 | — | 1 |
| AS206159CZ | cz-fresh Fresh Data s.r.o. | 256 | 65.5K | 2 |
| AS210984CZ | ZEROPS-IO Zerops s.r.o. | 256 | 4.1K | 2 |
| AS215260CZ | EmeraldG-Net Emerald Group s.r.o. | 256 | — | 1 |
| AS56717CZ | RESAL-AS OG Soft s.r.o. | 256 | 1 | 2 |
| AS211085CZ | amccomp-master-praha mapnet IT services s.r.o. | 256 | 524.3K | 3 |
| AS208143CZ | amccomp-unin mapnet IT services s.r.o. | 256 | 3 | 4 |
| AS44104CZ | LCJ-AS LCJ Invest, a.s. | 256 | — | 1 |
| AS209719CZ | CZ-MOD Ministerstvo Obrany | 256 | 1 | 2 |
| AS50097CZ | IPVOIP-AS IPVOIP s.r.o. | 256 | — | 1 |
| AS215806CZ | CZ-ALBERT-AS Albert Ceska republika, s.r.o. | 256 | — | 1 |
| AS214224CZ | CESKASITNET CeskaSit.net Networks s.r.o. | 256 | — | 1 |
| AS211594CZ | PEERNET Kleissner Investments s.r.o. | 256 | 524.3K | 2 |
| AS201594CZ | CTU_AS4 Czech Telecommunication Office | 256 | 65.5K | 2 |
| AS199665CZ | RADIOLINKplus1-NETWORK Hana Juzkova | 256 | 1 | 2 |
| AS212453CZ | HR-FORTUNA-GAME-DC FORTUNA GAME a.s. | 512 | — | 2 |
| AS206234CZ | RO-FORTUNA-GAME FORTUNA GAME a.s. | 512 | — | 2 |
| AS48131CZ | IXOXI IXOXI s.r.o. | 512 | 131.1K | 4 |
| AS49142CZ | HBO HBO Europe s.r.o. | 512 | — | 1 |
| AS50695CZ | VLP-AS VLTAVA LABE MEDIA a.s. | 512 | 1 | 3 |
| AS210604CZ | asczpernix-neza Pernix systems s.r.o. | 512 | — | 2 |
| AS202131CZ | Wave-net ISP Alliance a.s. | 512 | — | 1 |
| AS215308CZ | DIMCZNET Spolek PASKOV.net | 512 | 65.5K | 3 |
| AS49580CZ | MONETPLUS-AS Monet +, a.s. | 512 | — | 2 |
| AS207696CZ | DPP-AS Dopravni podnik hl.m. Prahy, a.s. | 512 | 1 | 2 |
| AS204668CZ | ASTANACZ ASTANA Technologies s.r.o. | 512 | 131.1K | 2 |
| AS198519CZ | RBcz Raiffeisenbank a.s. | 512 | — | 2 |
| AS25093CZ | CSAS-CZ Ceska sporitelna a.s. | 512 | — | 2 |
| AS216006CZ | BLAZEHOST Vojtech Smrz | 512 | 1 | 3 |
| AS207434CZ | GRC Generalni reditelstvi cel | 512 | 256 | 3 |
| AS215711CZ | MZE The Ministry of Agriculture of the Czech Republic | 512 | 16.4K | 3 |
| AS20701CZ | CZNIC-AS3 CZ.NIC, z.s.p.o. | 512 | 2 | 4 |
| AS25321CZ | G4S-NET Brink's Cash Solutions (CZ), a.s. | 512 | — | 1 |
| AS3161CZ | ASITPROFI IT PROFI s.r.o. | 512 | — | 1 |
| AS210061CZ | VinariceNET Ladislav Kepl | 512 | — | 1 |