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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 |
| 1K |
| 524.3K |
| 2 |
| AS49573CZ | ASJIMMY JimmyNet s.r.o. | 1K | 524.3K | 2 |
| AS8646CZ | cloudinfrastack cloudinfrastack, s.r.o. | 1K | — | 1 |
| AS29504CZ | LBCFREE Freenet Liberec, z.s. | 1K | 524.3K | 2 |
| AS203488CZ | DALUNET DaLuNET s.r.o. | 1K | 65.5K | 5 |
| AS20643CZ | CZ-PILSFREESERVIS-AS PilsFree servis, s.r.o. | 1K | 524.3K | 2 |
| AS51744CZ | ASJABLONKA Non-profit organization Jablonka.cz | 1K | 1 | 2 |
| AS59664CZ | ASOPTON Opton s.r.o. | 1K | — | 1 |
| AS202774CZ | comtex ISP Alliance a.s. | 1K | 524.3K | 2 |
| AS13199CZ | DOUBRAVA-NET Jaroslav Doubrava | 1K | 524.3K | 2 |
| AS34475CZ | Agrostroj Agrostroj Pelhrimov, a.s. | 1K | — | 4 |
| AS12344CZ | CZECHITC CZECH IT CLUSTER, druzstvo | 1K | 131.1K | 2 |
| AS204570CZ | hornackynet KAZA.cz s.r.o. | 1K | — | 1 |
| AS50415CZ | Ahosting Ahosting a.s. | 1K | 524.3K | 2 |
| AS206951CZ | BMBGreen BMB-Green s.r.o. | 1K | 524.3K | 2 |
| AS201163CZ | KB-AS-CZ Komercni banka, a.s. | 1K | — | 3 |
| AS208847CZ | ASfryzl Martin Fryzl | 1K | 524.3K | 2 |
| AS202657CZ | Hnojnik Pavel Jochim | 1K | 524.3K | 2 |
| AS205300CZ | ASSUNFOX Sunfox s.r.o. | 1K | — | 1 |
| AS44984CZ | Fortion Fortion Networks, s.r.o. | 1K | 65.5K | 2 |
| AS197895CZ | ONYX-AS ONYX engineering, spol. s r.o. | 1K | 65.5K | 2 |
| AS44770CZ | SAVVY-AS Savvy s.r.o. | 1K | 1 | 2 |
| AS200635CZ | INTERCONNECT pragmatel s.r.o. | 1K | 65.5K | 2 |
| AS204567CZ | ASPCKBnet PCKBnet s.r.o. | 1K | — | 1 |
| AS205345CZ | HORALNET HoralNET s.r.o. | 1K | 524.3K | 2 |
| AS212876CZ | CZ-PARDUBICKYKRAJ Pardubicky Kraj | 1K | 524.3K | 2 |
| AS207015CZ | POSITION Position s.r.o. | 1K | 65.5K | 2 |
| AS12984CZ | PILSFREE PilsFree, z. s. | 1K | 524.3K | 2 |
| AS209834CZ | brnonet KAZA.cz s.r.o. | 1K | — | 1 |
| AS51661CZ | ALLSTARNET UVT Internet s.r.o. | 1K | — | 4 |
| AS56344CZ | ASVIRIDIUM Viridium.cz s.r.o. | 1K | 1 | 5 |
| AS203550CZ | I2NET i2net cz s.r.o. | 1K | 524.3K | 2 |
| AS199600CZ | Virtis Virtis s.r.o. | 1K | 524.3K | 2 |
| AS25238CZ | MONETA-CZ MONETA Money Bank, a.s. | 1K | 1 | 5 |
| AS47727CZ | WARNETCZ-AS Warnet.cz s.r.o. | 1K | 65.5K | 2 |
| AS57081CZ | SCARFBOT Scarfbot Technologies, s.r.o. | 1K | 524.3K | 2 |
| AS212224CZ | Traveliana Coolhousing s.r.o. | 1K | 65.5K | 2 |
| AS199350CZ | mfcr Ministerstvo financi | 1K | 65.5K | 2 |
| AS198171CZ | WebglobeRS Webglobe, s.r.o. | 1K | 65.5K | 2 |
| AS50067CZ | cesal CESAL s.r.o. | 1K | 524.3K | 5 |
| AS200828CZ | THOSTING-AS TERMS a.s. | 1K | 524.3K | 2 |
| AS204351CZ | NAM NAM system, a.s. | 1K | — | 4 |
| AS208466CZ | egdsro EG.D, s.r.o. | 1K | — | 1 |
| AS203376CZ | MAILKIT Mailkit s.r.o. | 1K | 524.3K | 6 |
| AS196916CZ | BUSINESSCOM-AS BusinessCom CZ spol. s r.o. | 1K | — | 2 |
| AS34819CZ | h17 H17 Networks, s.r.o. | 1K | 524.3K | 2 |
| AS202719CZ | PRANET Pranet s.r.o. | 1K | 65.5K | 2 |