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How Czechia ranks worldwide on dormant space, the transfer market, routing security and address density.
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. | 265.2K | 10 |
| AS30764CZ | PODA-AS PODA a.s. | 220.4K | 21 |
| AS42908CZ | CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | 183.3K | 44 |
| 256 |
| — |
| 1 |
| AS214224CZ | CESKASITNET CeskaSit.net Networks s.r.o. | 256 | — | 1 |
| AS213558CZ | spinoco-ushc Spinoco a.s. | 256 | — | 1 |
| AS39050CZ | NETSERVICE-AS NET service solution, s.r.o. | 256 | 524.3K | 2 |
| AS49262CZ | ATCCZ1 Ataccama Software, s.r.o. | 256 | 524.3K | 2 |
| AS196849CZ | ASBARTYSOVA MO BYRTUS s.r.o. | 256 | — | 1 |
| AS205947CZ | NDC-ICT-SOLUTIONS NDC ICT Solutions s.r.o. | 256 | — | 1 |
| AS198624CZ | Hexado Petr Balek trading as Hexado.pro | 256 | 256 | 2 |
| AS197256CZ | RENEWINKLER-AS Rene Winkler | 256 | — | 1 |
| AS211274CZ | QCZ Quadruple a.s. | 256 | 262.1K | 5 |
| AS51278CZ | IGNUM-ANYCAST-AS Webglobe, s.r.o. | 256 | 1 | 2 |
| AS199806CZ | DCIT-AS-CZ DCIT, a.s. | 256 | 1 | 2 |
| AS56717CZ | RESAL-AS OG Soft s.r.o. | 256 | 1 | 2 |
| AS206591CZ | ALZACZ-AS Alza.cz a.s. | 256 | — | 1 |
| AS211700CZ | DEXUS Dexus Internet s.r.o. | 256 | 65.5K | 2 |
| AS202996CZ | Helkor Ondrej Vrana | 256 | 256 | 2 |
| AS210498CZ | Vysocina-hSOC Kraj Vysocina | 256 | 256 | 2 |
| AS211816CZ | ASERONX ERON X s.r.o. | 256 | — | 1 |
| AS200070CZ | CZNIC-AS2 CZ.NIC, z.s.p.o. | 256 | 2 | 3 |
| AS215676CZ | GOODHOST GoodHost s.r.o. | 256 | 1 | 2 |
| AS56891CZ | ASCZRB Narodni rozvojova banka, a.s. | 256 | — | 1 |
| AS206468CZ | TREBORADICENET-AS Treboradice.net z.s. | 256 | 65.5K | 2 |
| AS62298CZ | CSC Computer Systems Consulting s.r.o. | 256 | 524.3K | 2 |
| AS196943CZ | ASVISSADO Vissado s.r.o. | 256 | 1 | 2 |
| AS208422CZ | INFINITY-AS Infinity Telecom, s.r.o. | 256 | 1 | 2 |
| AS60584CZ | PRIME-AS Prime Studio s.r.o. | 256 | 524.3K | 2 |
| AS202643CZ | NETSERV-AS NetSERV, s.r.o. | 256 | 524.3K | 2 |
| AS198121CZ | DNS4EU Whalebone, s.r.o. | 256 | 1 | 2 |
| AS203299CZ | IHNET NetX Networks a.s. | 256 | 65.5K | 2 |
| AS21082CZ | AS-CZVP Reliable Communications s.r.o. | 256 | — | 1 |
| AS214032CZ | BUDOVIT BUDOVIT s.r.o | 256 | 1 | 2 |
| AS212453CZ | HR-FORTUNA-GAME-DC FORTUNA GAME a.s. | 512 | — | 2 |
| AS198519CZ | RBcz Raiffeisenbank a.s. | 512 | — | 2 |
| AS207850CZ | UstiNET-AS HovNet-SERVIS s.r.o. | 512 | — | 2 |
| AS206785CZ | BRNO Magistrat mesta Brna | 512 | 1 | 3 |
| AS49142CZ | HBO HBO Europe s.r.o. | 512 | — | 1 |
| AS198627CZ | SHOPTET Shoptet, a.s. | 512 | 1 | 3 |
| AS206234CZ | RO-FORTUNA-GAME FORTUNA GAME a.s. | 512 | — | 2 |
| AS215353CZ | InPacketNetwork Josef Hrabe | 512 | — | 2 |
| AS214703CZ | FAKAHEDA-AS Core4Net, s.r.o. | 512 | — | 1 |
| AS204668CZ | ASTANACZ ASTANA Technologies s.r.o. | 512 | 131.1K | 2 |
| AS207696CZ | DPP-AS Dopravni podnik hl.m. Prahy, a.s. | 512 | 1 | 2 |
| AS215711CZ | MZE The Ministry of Agriculture of the Czech Republic | 512 | 16.4K | 3 |
| AS51521CZ | ASKMNET Resident Control Telco s.r.o. | 512 | — | 1 |
| AS208712CZ | CENDIS CENDIS, s.p. | 512 | 1 | 2 |
| AS202131CZ | Wave-net ISP Alliance a.s. | 512 | — | 1 |
| AS3161CZ | ASITPROFI IT PROFI s.r.o. | 512 | — | 1 |