A list of all Czech Republic ASNs including hosting providers, ISPs, and businesses with announced IPv4 and IPv6 prefixes.
| ASN | Type | IPv4 Routes | IPv6 Routes | Company |
|---|---|---|---|---|
| AS31246 | ISP & Mobile | 5 | 2 | O2 Czech Republic, a.s. |
| AS197013 | ISP & Mobile | 5 | 1 | Sprintel s.r.o. |
| AS204064 | ISP & Mobile | 5 | 1 | CEZNET s.r.o. |
| AS205619 | Other Business | 5 | 1 | Jiri Chalabala |
| AS206548 | Hosting Provider | 5 | 1 | ZCOM.cz s.r.o |
| AS29086 | ISP & Mobile | 5 | 1 | GiTy, a.s. |
| AS29321 | ISP & Mobile | 5 | 1 | O2 Czech Republic, a.s. |
| AS42000 | Other Business | 5 | 1 | Futruy s.r.o. |
| AS47110 | Hosting Provider | 5 | 1 | Cloud4com s.r.o. |
| AS47269 | ISP & Mobile | 5 | 1 | Core4Net, s.r.o. |
| AS48960 | Hosting Provider | 5 | 1 | AQUA,a.s. |
| AS50784 | ISP & Mobile | 5 | 1 | Intraweb servis s.r.o. |
| AS50825 | Other Business | 5 | 1 | UVT Internet s.r.o. |
| AS9080 | Other Business | 5 | 1 | Ipex A.S |
| AS204080 | Other Business | 5 | 0 | Apelby Solutions s.r.o. |
| AS208093 | Government | 5 | 0 | Moravskoslezsky kraj |
| AS216450 | Other Business | 5 | 0 | Letiste Praha, a. s. |
| AS34911 | ISP & Mobile | 5 | 0 | ELDATA prazska s.r.o. |
| AS203645 | Other Business | 4 | 23 | Jan Ryznar |
| AS50833 | Hosting Provider | 4 | 4 | FIBER TELECOM s.r.o. |
| AS198346 | Hosting Provider | 4 | 3 | NETFORMS s.r.o. |
| AS197019 | Hosting Provider | 4 | 2 | WEDOS Internet, a.s. |
| AS207886 | ISP & Mobile | 4 | 2 | ECOMP spol s r.o. |
| AS35613 | ISP & Mobile | 4 | 2 | FASTER CZ spol. s r.o. |
| AS47114 | ISP & Mobile | 4 | 2 | SychrovNET s.r.o |
| AS51134 | Hosting Provider | 4 | 2 | Development 777 s.r.o. |
| AS197296 | ISP & Mobile | 4 | 1 | United Networks SE |
| AS203488 | ISP & Mobile | 4 | 1 | DaLuNET s.r.o. |
| AS209055 | Other Business | 4 | 1 | W.A.G. PAYMENT SOLUTIONS, A.S. |
| AS25238 | Other Business | 4 | 1 | MONETA Money Bank, a.s. |
| AS34040 | ISP & Mobile | 4 | 1 | TTNET s.r.o. |
| AS34049 | Other Business | 4 | 1 | H-data, spol. s r.o. |
| AS34080 | Other Business | 4 | 1 | MIRAMO spol. s.r.o. |
| AS35096 | Other Business | 4 | 1 | Alef Nula a.s. |
| AS42189 | ISP & Mobile | 4 | 1 | Druzstvo EUROSIGNAL |
| AS48602 | Other Business | 4 | 1 | Connect plus s.r.o. |
| AS50067 | Other Business | 4 | 1 | CESAL s.r.o. |
| AS51449 | ISP & Mobile | 4 | 1 | Kabelova televize Usti nad Orlici, spol. s r. o. |
| AS56344 | ISP & Mobile | 4 | 1 | Viridium.cz s.r.o. |
| AS58239 | ISP & Mobile | 4 | 1 | hanspaul-city.net s.r.o. |
| AS59959 | ISP & Mobile | 4 | 1 | SferiaNET.cz s.r.o. |
| AS62099 | ISP & Mobile | 4 | 1 | JM-Networks, s.r.o. |
| AS199657 | ISP & Mobile | 4 | 0 | TNtech, s.r.o. |
| AS201447 | Government | 4 | 0 | The Czech National Bank |
| AS203411 | Other Business | 4 | 0 | FORTUNA GAME a.s. |
| AS204351 | Other Business | 4 | 0 | NAM system, a.s. |
| AS205234 | Government | 4 | 0 | Brnenske komunikace a.s. |
| AS206414 | Other Business | 4 | 0 | TechCenter s.r.o. |
| AS206587 | Other Business | 4 | 0 | Daktela s.r.o. |
| AS208962 | Other Business | 4 | 0 | Nextremum s.r.o. |
| AS34475 | Other Business | 4 | 0 | Agrostroj Pelhrimov, a.s. |
| AS40964 | Other Business | 4 | 0 | ASTELNET s.r.o. |
| AS44424 | Other Business | 4 | 0 | Allegro Retail a.s. |
| AS51661 | Other Business | 4 | 0 | UVT Internet s.r.o. |
| AS6740 | ISP & Mobile | 4 | 0 | CEZNET s.r.o. |
| AS203165 | Government | 3 | 3 | Statni pokladna Centrum sdilenych sluzeb, s.p. |
| AS203376 | Other Business | 3 | 3 | Mailkit s.r.o. |
| AS205535 | ISP & Mobile | 3 | 3 | Windyghoul s.r.o. |
| AS206712 | Hosting Provider | 3 | 3 | FELDSAM s.r.o. |
| AS210631 | Hosting Provider | 3 | 3 | SafeDX s.r.o. |
| AS197444 | ISP & Mobile | 3 | 2 | COMFEEL s.r.o. |
| AS197879 | ISP & Mobile | 3 | 2 | HelaPC s.r.o. |
| AS203385 | Other Business | 3 | 2 | Pernix systems s.r.o. |
| AS209671 | Other Business | 3 | 2 | Qrator Labs CZ s.r.o. |
| AS35046 | ISP & Mobile | 3 | 2 | OMEGA plus Chrudim s.r.o. |
| AS39791 | Other Business | 3 | 2 | Telco Pro Services, a. s. |
| AS48091 | Government | 3 | 2 | Kraj Vysocina |
| AS59970 | ISP & Mobile | 3 | 2 | AmigoNet s.r.o. |
| AS6881 | Other Business | 3 | 2 | NIX.CZ z.s.p.o. |
| AS197277 | Other Business | 3 | 1 | State Institute for Drug Control |
| AS197307 | ISP & Mobile | 3 | 1 | Core4Net, s.r.o. |
| AS198143 | Government | 3 | 1 | Ceska Posta s.p. |
| AS198813 | ISP & Mobile | 3 | 1 | SychrovNET s.r.o |
| AS201608 | ISP & Mobile | 3 | 1 | HovNet-SERVIS s.r.o. |
| AS204007 | Other Business | 3 | 1 | Kleissner Investments s.r.o. |
| AS204332 | ISP & Mobile | 3 | 1 | TKC system s.r.o. |
| AS206613 | Other Business | 3 | 1 | Tipsport.net a.s. |
| AS20708 | Other Business | 3 | 1 | SKODA AUTO a.s. |
| AS207198 | ISP & Mobile | 3 | 1 | Kabelova televize Koprivnice, s.r.o. |
| AS207945 | ISP & Mobile | 3 | 1 | CNI Group s.r.o. |
| AS208060 | Other Business | 3 | 1 | Dr. Max BDC, s.r.o. |
| AS209135 | Other Business | 3 | 1 | Flowmon Networks a.s. |
| AS211248 | ISP & Mobile | 3 | 1 | Artemis NET s.r.o. |
| AS212315 | Other Business | 3 | 1 | Frantisek Toman |
| AS212975 | ISP & Mobile | 3 | 1 | TeamCity s.r.o. |
| AS33883 | ISP & Mobile | 3 | 1 | TRIOPTIMUM s.r.o. |
| AS34596 | ISP & Mobile | 3 | 1 | HVfree.net servis. s.r.o. |
| AS39736 | Hosting Provider | 3 | 1 | ICT Support, s.r.o. |
| AS39904 | ISP & Mobile | 3 | 1 | MERIT GROUP a.s |
| AS47749 | Other Business | 3 | 1 | ORIFLAME SOFTWARE s.r.o. |
| AS50338 | Other Business | 3 | 1 | GamerHost s.r.o. |
| AS57188 | Other Business | 3 | 1 | ORKA systems, s.r.o. |
| AS57279 | ISP & Mobile | 3 | 1 | Sauron CZ s.r.o. |
| AS57825 | ISP & Mobile | 3 | 1 | MoravanyNET s.r.o. |
| AS59479 | ISP & Mobile | 3 | 1 | GEMNET s.r.o. |
| AS62102 | Hosting Provider | 3 | 1 | Prazska plynarenska, a.s. |
| AS197353 | Other Business | 3 | 0 | NN Management Services, s.r.o. |
| AS197412 | Other Business | 3 | 0 | Jiri Tlapak |
| AS198103 | Other Business | 3 | 0 | CCS Ceska spolecnost pro platebni karty s.r.o. |
| AS200114 | ISP & Mobile | 3 | 0 | JON.CZ s.r.o. |