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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 |
| 131.1K |
| 4 |
| AS49580CZ | MONETPLUS-AS Monet +, a.s. | 512 | — | 2 |
| AS210061CZ | VinariceNET Ladislav Kepl | 512 | — | 1 |
| AS204668CZ | ASTANACZ ASTANA Technologies s.r.o. | 512 | 131.1K | 2 |
| AS3161CZ | ASITPROFI IT PROFI s.r.o. | 512 | — | 1 |
| AS215308CZ | DIMCZNET Spolek PASKOV.net | 512 | 65.5K | 3 |
| AS202131CZ | Wave-net ISP Alliance a.s. | 512 | — | 1 |
| AS50695CZ | VLP-AS VLTAVA LABE MEDIA a.s. | 512 | 1 | 3 |
| AS201934CZ | SATAN-NET HD Internet s.r.o. | 512 | — | 2 |
| AS215711CZ | MZE The Ministry of Agriculture of the Czech Republic | 512 | 16.4K | 3 |
| AS62083CZ | FIO-BANKA-AS Fio banka, a.s. | 512 | — | 2 |
| AS218484CZ | OLEKSANDR-AS Oleksandr Karpovych | 512 | 1 | 3 |
| AS212453CZ | HR-FORTUNA-GAME-DC FORTUNA GAME a.s. | 512 | — | 2 |
| AS42726CZ | BUSINESSCOM BusinessCom CZ spol. s r.o. | 512 | — | 2 |
| AS206785CZ | BRNO Magistrat mesta Brna | 512 | 1 | 3 |
| AS208712CZ | CENDIS CENDIS, s.p. | 512 | 1 | 2 |
| AS210604CZ | asczpernix-neza Pernix systems s.r.o. | 512 | — | 2 |
| AS198627CZ | SHOPTET Shoptet, a.s. | 512 | 1 | 3 |
| AS204172CZ | TTCINFRA-CZ TTC TELEKOMUNIKACE s.r.o. | 512 | — | 1 |
| AS207850CZ | OGARDATA-AS HovNet-SERVIS s.r.o. | 512 | — | 2 |
| AS206234CZ | RO-FORTUNA-GAME FORTUNA GAME a.s. | 512 | — | 2 |
| AS51521CZ | ASKMNET Resident Control Telco s.r.o. | 512 | — | 1 |
| AS208329CZ | Ceska_televize Ceska televize | 512 | — | 2 |
| AS207696CZ | DPP-AS Dopravni podnik hl.m. Prahy, a.s. | 512 | 1 | 2 |
| AS51727CZ | SKODAPOWER-AS Doosan Skoda Power s.r.o | 512 | — | 1 |
| AS202996CZ | Helkor Ondrej Vrana | 512 | 256 | 3 |
| AS216006CZ | BLAZEHOST Vojtech Smrz | 512 | 1 | 3 |
| AS215602CZ | sikmo sikmo s.r.o. | 512 | — | 2 |
| AS207434CZ | GRC Generalni reditelstvi cel | 512 | 256 | 3 |
| AS25321CZ | G4S-NET Brink's Cash Solutions (CZ), a.s. | 512 | — | 1 |
| AS60266CZ | EMBEDIT-AS EmbedIT s.r.o. | 512 | 65.5K | 3 |
| AS49142CZ | HBO HBO Europe s.r.o. | 512 | — | 1 |
| AS20701CZ | CZNIC-AS3 CZ.NIC, z.s.p.o. | 512 | 2 | 4 |
| AS198519CZ | RBcz Raiffeisenbank a.s. | 512 | — | 2 |
| AS48405CZ | CGI-CZ-AS1 CGI IT Czech Republic s.r.o. | 256 | — | 1 |
| AS208422CZ | INFINITY-AS Infinity Telecom, s.r.o. | 256 | 1 | 2 |
| AS58215CZ | Omniline-net-as Omniline Investment s.r.o. | 256 | — | 1 |
| AS213359CZ | MAZEL_BIZ_AS Jan Korinek | 256 | 524.3K | 2 |
| AS215806CZ | CZ-ALBERT-AS Albert Ceska republika, s.r.o. | 256 | — | 1 |
| AS211334CZ | Master_IT_Technologies-2 MASTER IT Technologies, a.s. | 256 | — | 1 |
| AS213558CZ | spinoco-ushc Spinoco a.s. | 256 | — | 1 |
| AS205064CZ | rockawayx-uae RockawayX Infra s.r.o. | 256 | — | 1 |
| AS51025CZ | CONNECT-TST-AS VSHosting s.r.o. | 256 | — | 1 |
| AS51278CZ | IGNUM-ANYCAST-AS Webglobe, s.r.o. | 256 | 1 | 2 |
| AS204183CZ | Omnivery-EU Omnivery s.r.o. | 256 | — | 1 |
| AS28892CZ | CUZK-NET Cesky urad zememericky a katastralni | 256 | 1 | 2 |
| AS198121CZ | DNS4EU Whalebone, s.r.o. | 256 | 2 | 3 |