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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.
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. | 265.5K | 11 |
| AS30764CZ | PODA-AS PODA a.s. | 220.4K | 21 |
| AS42908CZ | CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | 183.3K | 44 |
| 1K |
| — |
| 3 |
| AS201116CZ | VybezekNET Vybezek.NET s.r.o. | 1K | 524.3K | 2 |
| AS13199CZ | DOUBRAVA-NET Jaroslav Doubrava | 1K | 524.3K | 2 |
| AS58220CZ | PEGASNET Tomas Budai | 1K | 65.5K | 2 |
| AS205044CZ | MOSES MOSES Internet s.r.o. | 1K | 524.3K | 2 |
| AS204351CZ | NAM NAM system, a.s. | 1K | — | 4 |
| AS59871CZ | HEUREKA_GROUP Heureka Group a.s. | 1K | 5 | 6 |
| AS201447CZ | AS_CNB The Czech National Bank | 1K | — | 4 |
| AS203328CZ | PVfreenet PVfree.net, z. s. | 1K | 524.3K | 2 |
| AS203488CZ | DALUNET DaLuNET s.r.o. | 1K | 65.5K | 5 |
| AS200828CZ | THOSTING-AS TERMS a.s. | 1K | 524.3K | 2 |
| AS29504CZ | LBCFREE Freenet Liberec, z.s. | 1K | 524.3K | 2 |
| AS57904CZ | ASVEVYNET Vevynet s.r.o. | 1K | — | 1 |
| AS196916CZ | BUSINESSCOM-AS BusinessCom CZ spol. s r.o. | 1K | — | 2 |
| AS203550CZ | I2NET i2net cz s.r.o. | 1K | 524.3K | 2 |
| AS208847CZ | ASfryzl Martin Fryzl | 1K | — | 1 |
| AS41779CZ | LAJSINET LajsiNET s.r.o. | 1K | 524.3K | 2 |
| AS209621CZ | dobnet DOBNET, z.s. | 1K | 524.3K | 2 |
| AS8646CZ | cloudinfrastack cloudinfrastack, s.r.o. | 1K | — | 1 |
| AS56827CZ | ASMIRNETCZ mirnet s.r.o. | 1K | — | 1 |
| AS206951CZ | BMBGreen BMB-Green s.r.o. | 1K | 524.3K | 2 |
| AS209135CZ | FlowmonNetworks Flowmon Networks a.s. | 1K | 65.5K | 4 |
| AS57081CZ | SCARFBOT Scarfbot Technologies, s.r.o. | 1K | 524.3K | 2 |
| AS62405CZ | Brouzdal Brouzdal, s.r.o. | 1K | 65.5K | 2 |
| AS34475CZ | Agrostroj Agrostroj Pelhrimov, a.s. | 1K | — | 4 |
| AS198143CZ | CESKAPOSTA-AS Ceska Posta s.p. | 1K | 1 | 4 |
| AS56353CZ | FIRSTLINE-AS First Line Software s.r.o. | 1K | — | 1 |
| AS202872CZ | KMENET KME, spol. s r. o. | 1K | 65.5K | 3 |
| AS202774CZ | comtex ISP Alliance a.s. | 1K | 524.3K | 2 |
| AS12984CZ | PILSFREE PilsFree, z. s. | 1K | 524.3K | 2 |
| AS204394CZ | CORTEX Cortex, a.s. | 1K | 524.3K | 2 |
| AS198031CZ | TRUSTICA-AS Trustica s.r.o. | 1K | 65.5K | 2 |
| AS47749CZ | ORIFLAME-AS ORIFLAME SOFTWARE s.r.o. | 1K | 1 | 4 |
| AS203365CZ | OPTETNETWORK Optet network, s. r. o. | 1K | 524.3K | 2 |
| AS205982CZ | ASmraknet Mraknet s.r.o. | 1K | — | 1 |
| AS204943CZ | NTVcable NTV cable s.r.o. | 1K | 524.3K | 2 |
| AS208466CZ | egdsro EG.D, s.r.o. | 1K | — | 1 |
| AS50067CZ | cesal CESAL s.r.o. | 1K | 524.3K | 5 |
| AS212876CZ | CZ-PARDUBICKYKRAJ Pardubicky Kraj | 1K | 524.3K | 2 |
| AS44770CZ | SAVVY-AS Savvy s.r.o. | 1K | 1 | 2 |
| AS204570CZ | hornackynet KAZA.cz s.r.o. | 1K | — | 1 |
| AS201625CZ | UNITED_NETWORKS_SE United Networks SE | 1K | 524.3K | 2 |
| AS49095CZ | P12com PRAHA12.com s.r.o. | 1K | 524.3K | 3 |
| AS204772CZ | RSD-CZ Reditelstvi silnic a dalnic s.p. | 1K | 65.5K | 2 |
| AS209947CZ | mwifi M-wifi internet s.r.o. | 1K | 524.3K | 2 |
| AS204567CZ | ASPCKBnet PCKBnet s.r.o. | 1K | — | 1 |
| AS199722CZ | SBERBANKCZ Sberbank CZ, a.s. v likvidaci | 1K | — | 1 |