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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 |
| 858.4K |
| 524.3K |
| 28 |
| AS44546CZ | ALFATELECOM-AS ALFA TELECOM s.r.o. | 526.8K | — | 11 |
| AS2571CZ | DHLNET - DHL Information Services (Europe) s.r.o | 438.5K | 90 | 100 |
| AS29208CZ | QUANTCOM-AS Quantcom, a.s. | 274.4K | 262.1K | 41 |
| AS28725CZ | CETIN-AS CETIN a.s. | 265.2K | 589.8K | 10 |
| AS30764CZ | PODA-AS PODA a.s. | 220.4K | 131.1K | 21 |
| AS42908CZ | CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | 183.3K | 2.4M | 44 |
| AS16246CZ | AS16246 O2 Czech Republic, a.s. | 133.1K | 589.8K | 15 |
| AS25512CZ | CDT-AS CD-Telematika a.s. | 117.8K | 65.5K | 12 |
| AS15425CZ | COMA PODA a.s. | 110.6K | 65.5K | 9 |
| AS25248CZ | BlueTone-AS RADIOKOMUNIKACE a.s. | 106.8K | 65.5K | 7 |
| AS5588CZ | GTSCE T-Mobile Czech Republic a.s. | 79.1K | 131.1K | 25 |
| AS44489CZ | Starnet STARNET, s.r.o. | 77.3K | 2.3M | 33 |
| AS197451CZ | VUTBR-AS Brno University of Technology | 67.6K | 852K | 12 |
| AS31246CZ | NETBOX-AS O2 Czech Republic, a.s. | 66.6K | 655.4K | 7 |
| AS24971CZ | MASTER-AS MasterDC s.r.o. | 58.9K | 1.4M | 46 |
| AS12570CZ | ITSELF O2 Czech Republic, a.s. | 53.8K | 589.8K | 13 |
| AS41046CZ | NEJTV-AS O2 Czech Republic, a.s. | 53.2K | 524.3K | 10 |
| AS15935CZ | HA-VEL-LOCAL-AS ha-vel internet s.r.o. | 51.2K | 65.5K | 17 |
| AS24806CZ | INTERNET-CZ INTERNET CZ, a.s. | 45.8K | 65.5K | 12 |
| AS6740CZ | INEXT-CZ-ADA CEZNET s.r.o. | 42K | — | 4 |
| AS21430CZ | WIA-AS WIA spol. s.r.o. | 41.7K | 65.5K | 71 |
| AS39906CZ | COPROSYS CoProSys a.s. | 37.9K | 65.5K | 13 |
| AS25424CZ | INEXT-CZ CEZNET s.r.o. | 33.8K | 1M | 9 |
| AS39392CZ | SuperNetwork SH.cz s.r.o. | 32.5K | 1.1M | 17 |
| AS15685CZ | CASABLANCA-AS CASABLANCA INT a.s. | 31.7K | 65.5K | 60 |
| AS9080CZ | GIN Ipex A.S | 26.6K | 65.5K | 6 |
| AS43709CZ | SILESNET SilesNet s.r.o. | 24.6K | 196.6K | 14 |
| AS35592CZ | COOLHOUSING-AS Coolhousing s.r.o. | 23.3K | 65.5K | 35 |
| AS50698CZ | TETA TETA s.r.o. | 22.5K | 1M | 12 |
| AS29134CZ | IGNUM-AS Webglobe, s.r.o. | 20.7K | 200.7K | 16 |
| AS51420CZ | CYRILEK-AS cyrilek.net z.s. | 20.5K | — | 18 |
| AS204666CZ | czjiritlapak Jiri Tlapak | 20.5K | 3.7M | 46 |
| AS42306CZ | EDERA_Group Edera Group a.s. | 20.5K | 2.1M | 12 |
| AS15614CZ | Dragon Dragon Internet a.s. | 20K | 524.3K | 7 |
| AS24641CZ | FASTER-AS FASTER CZ spol. s r.o. | 18.9K | 131.1K | 14 |
| AS39791CZ | TPS-AS Telco Pro Services, a. s. | 18.7K | 65.5K | 5 |
| AS43541CZ | VSHOSTING VSHosting s.r.o. | 18.4K | 655.4K | 22 |
| AS49985CZ | IP4ISP IP4ISP z.s.p.o | 17.9K | 65.5K | 7 |
| AS8251CZ | NFX_ZSPO FreeTel, s.r.o. | 17.4K | 65.5K | 7 |
| AS61296CZ | TechCom-AS TechCom s.r.o. | 17.4K | 65.5K | 3 |
| AS196735CZ | AS-JONCZ PODA a.s. | 16.6K | 65.5K | 3 |
| AS20723CZ | MGI AVONET, s.r.o. | 16.4K | 524.3K | 8 |
| AS49101CZ | KTCT-ASN CEZNET s.r.o. | 16.4K | 131.1K | 4 |
| AS197197CZ | M-NET CETIN a.s. | 16.4K | 65.5K | 2 |
| AS196822CZ | SELECTSYSTEM-AS SELECT SYSTEM, s.r.o. | 16.4K | 65.5K | 2 |
| AS210712CZ | GRAPESC-ISP ISP Alliance a.s. | 15.6K | 262.1K | 13 |