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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 |
| — |
| 0 |
| AS49931CZ | SITKOM-AS STARNET, s.r.o. | — | — | 0 |
| AS212204CZ | psk-cro FORTUNA GAME a.s. | — | — | 0 |
| AS218913CZ | TITANSOFTWARE Titan Software z.s. | — | — | 0 |
| AS213104CZ | WIREIX FIBER TELECOM s.r.o. | — | — | 0 |
| AS25036CZ | TERMSNET-AS O2 Czech Republic, a.s. | — | — | 0 |
| AS61169CZ | SPORKNET O2 Czech Republic, a.s. | — | — | 0 |
| AS201348CZ | sizeknet SIZEK Networks s.r.o | — | — | 0 |
| AS207887CZ | FIOBANKA-AS Fio banka, a.s. | — | — | 0 |
| AS211546CZ | ODRY Mesto Odry | — | — | 0 |
| AS209692CZ | czfoxconn FOXCONN CZ s.r.o. | — | — | 0 |
| AS50651CZ | WBD-EDGE-AS HBO Europe s.r.o. | — | — | 0 |
| AS212074CZ | FEELA-NET Ondrej Filip | — | — | 0 |
| AS200068CZ | stepech Stepan Pechman | — | — | 0 |
| AS8747CZ | Dial_Telecom-special Quantcom, a.s. | — | — | 0 |
| AS201934CZ | SATAN-NET HD Internet s.r.o. | — | — | 0 |
| AS202912CZ | PETR-HADRABA Petr Hadraba | — | — | 0 |
| AS22298CZ | BASTL Jan Vaclav | — | — | 0 |
| AS3234CZ | Parliament of the Czech Republic | — | — | 0 |
| AS203342CZ | RudolfNet ISP Alliance a.s. | — | — | 0 |
| AS28755CZ | HA-VEL-TRANSIT-AS ha-vel internet s.r.o. | — | — | 0 |
| AS200717CZ | STENcz-AS ISP Alliance a.s. | — | — | 0 |
| AS44672CZ | DataSpring3 Cloud4com s.r.o. | — | — | 0 |
| AS61981CZ | MACH3NET KLFREE NETWORKS, s.r.o. | — | — | 0 |
| AS197566CZ | ASOKNET Livady s.r.o. | — | — | 0 |
| AS213874CZ | NSIX-Route-Servers Jakub Krsa | — | — | 0 |
| AS41711CZ | FREETEL-AS FreeTel, s.r.o. | — | — | 0 |
| AS41824CZ | IH-LOSAN-NET O2 Czech Republic, a.s. | — | — | 0 |
| AS207575CZ | brabeczc-as Zahradnicke centrum Brabec, s.r.o. | — | 1 | 1 |
| AS214272CZ | BARTANET-AS David Barta | — | — | 0 |
| AS51463CZ | ASFAJNCOMCZ FAJNCOM s.r.o. | — | — | 0 |
| AS211898CZ | vpsfree vpsFree.cz, z.s. | — | — | 0 |
| AS210325CZ | Airnetworks ISP Alliance a.s. | — | — | 0 |
| AS211445CZ | meukralupy Mesto Kralupy nad Vltavou | — | — | 0 |
| AS205004CZ | AS_HCnet HCNET s.r.o. | — | — | 0 |
| AS215571CZ | ITIXO ITIXO s.r.o. | — | — | 0 |
| AS43895CZ | ZENTIVA-NET Zentiva Group, a.s | — | — | 0 |
| AS61195CZ | PEERINGCZ-AS Peering.cz s.r.o. | — | — | 0 |
| AS198121CZ | DNS4EU Whalebone, s.r.o. | 256 | 1 | 2 |
| AS199059CZ | MauriceWard Maurice Ward & Co., s.r.o. | 256 | — | 1 |
| AS211334CZ | Master_IT_Technologies-2 MASTER IT Technologies, a.s. | 256 | — | 1 |
| AS211085CZ | amccomp-master-praha mapnet IT services s.r.o. | 256 | 524.3K | 3 |
| AS202643CZ | NETSERV-AS NetSERV, s.r.o. | 256 | 524.3K | 2 |
| AS201263CZ | AS-BRIX-CDN Brno University of Technology | 256 | 1 | 2 |
| AS48405CZ | CGI-CZ-AS1 CGI IT Czech Republic s.r.o. | 256 | — | 1 |
| AS213559CZ | asmybv1 MyOffice, s.r.o. | 256 | 524.3K | 2 |
| AS39453CZ | UZIS-AS Ustav zdravotnickych informaci a statistiky Ceske republiky | 256 | — | 1 |