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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 |
| — |
| 1 |
| 1 |
| AS207576CZ | kovoplazma-as KOVO - PLAZMA s.r.o. | — | 1 | 1 |
| AS61195CZ | PEERINGCZ-AS Peering.cz s.r.o. | — | — | 0 |
| AS60275CZ | AS_RVTECH RVTech s.r.o. | — | 1 | 1 |
| AS204405CZ | DurnetCZ Durnet.cz sro | — | 65.5K | 1 |
| AS2605CZ | CESNET CESNET z.s.p.o. | — | — | 0 |
| AS206321CZ | startech STARTECH spol. s r.o. | — | 1 | 1 |
| AS216339CZ | Mald-Entertainment-Studio Mald Entertainment Studio, s.r.o. | — | 258 | 3 |
| AS216021CZ | STEVIJO-AS Stefan Johannes Mayer | — | 1 | 1 |
| AS28755CZ | HA-VEL-TRANSIT-AS ha-vel internet s.r.o. | — | — | 0 |
| AS211898CZ | vpsfree vpsFree.cz, z.s. | — | — | 0 |
| AS200985CZ | BOKNET TNtech, s.r.o. | — | 65.5K | 1 |
| AS207887CZ | FIOBANKA-AS Fio banka, a.s. | — | — | 0 |
| AS206601CZ | ZELENADATA-AS FASTER CZ spol. s r.o. | — | — | 0 |
| AS57158CZ | ASMELVI ISP Alliance a.s. | — | — | 0 |
| AS203342CZ | RudolfNet ISP Alliance a.s. | — | — | 0 |
| AS207575CZ | brabeczc-as Zahradnicke centrum Brabec, s.r.o. | — | 1 | 1 |
| AS212074CZ | FEELA-NET Ondrej Filip | — | — | 0 |
| AS203743CZ | BroumNet ISP Alliance a.s. | — | — | 0 |
| AS50100CZ | ModernTV-SK SychrovNET s.r.o | — | — | 0 |
| AS203450CZ | LogicPrim CEZNET s.r.o. | — | — | 0 |
| AS47200CZ | NIXCZ-RS NIX.CZ z.s.p.o. | — | — | 0 |
| AS202912CZ | PETR-HADRABA Petr Hadraba | — | — | 0 |
| AS209680CZ | JetBrains-AS JetBrains, s. r. o. | — | — | 0 |
| AS198564CZ | ASELCOMA STARNET, s.r.o. | — | — | 0 |
| AS210306CZ | ADVNET SferiaNET.cz s.r.o. | — | — | 0 |
| AS212325CZ | ADCSYSTEMS ADC Systems s.r.o. | — | — | 0 |
| AS212234CZ | SMEJKALOVA SMEJKALOVA Marketa | — | 528 | 3 |
| AS213813CZ | MASON-CZ-AS MaSON z. s. | — | 1 | 1 |
| AS22298CZ | BASTL Jan Vaclav | — | — | 0 |
| AS34070CZ | DATIN-AS BACKER COMPUTER s.r.o. | — | — | 0 |
| AS215582CZ | ipv6project-eu Jan Kalista | — | 1 | 1 |
| AS211193CZ | Tlapnet-CZ-AS Jiri Tlapak | — | — | 0 |
| AS208816CZ | AS208816 It services company s.r.o. | — | 65.5K | 1 |
| AS209431CZ | Pharocom PharoCom s.r.o. | — | 524.3K | 1 |
| AS54444CZ | AS54444 AS54444 s.r.o. | — | 1 | 1 |
| AS50491CZ | ASN-CZ-PLANET-A-50491 T-Mobile Czech Republic a.s. | — | — | 0 |
| AS215777CZ | CINCURA Jiri Cincura | — | 1 | 1 |
| AS213395CZ | NTXN NetX Networks a.s. | — | — | 0 |
| AS201457CZ | KOOPERATIVA-AS2 Kooperativa pojistovna, a.s., Vienna Insurance Group | — | — | 0 |
| AS210401CZ | Batlify_Internet Batlify Internet s.r.o. | — | 1 | 1 |
| AS219015CZ | as-mae Mae Vielle | — | 2 | 2 |
| AS210951CZ | MIEGLNET Josef Miegl | — | 13 | 13 |
| AS198624CZ | Hexado Petr Balek trading as Hexado.pro | — | — | 0 |
| AS201049CZ | UNT_Cernovice UNT Cernovice NET s.r.o. | — | — | 0 |
| AS59747CZ | NIX-DR NIX.CZ z.s.p.o. | — | 1 | 1 |
| AS215846CZ | Blindspot-research PRO-ZETA a.s. | — | 65.5K | 1 |