The report below shows ASNs assigned to Czech Republic, ranked by the total number of IP addresses currently active on each network. Click on the ASN for full IP address information, whois details and more. You can also view our hosting report to see the networks ranked by how many domain names they host.
| ASN | Name | Num IPs |
|---|---|---|
| AS5610 | O2 Czech Republic, a.s. | 1,588,480 |
| AS5588 | T-Mobile Czech Republic a.s. | 1,373,184 |
| AS2852 | CESNET z.s.p.o. | 848,896 |
| AS44546 | ALFA TELECOM s.r.o. | 526,336 |
| AS13036 | T-Mobile Czech Republic a.s. | 319,488 |
| AS30764 | PODA a.s. | 221,184 |
| AS5578 | BENESTRA, s.r.o. | 212,480 |
| AS16019 | Vodafone Czech Republic a.s. | 174,592 |
| AS28725 | Ceska Telekomunikacni Infrastruktura a.s | 135,936 |
| AS25512 | CD-Telematika a.s. | 122,368 |
| AS16246 | RIO Media a.s. | 114,688 |
| AS15425 | COMA s.r.o. | 111,616 |
| AS25248 | RADIOKOMUNIKACE a.s. | 107,776 |
| AS2571 | DHL Information Services (Europe) s.r.o | 86,272 |
| AS9080 | Ipex Ltd. | 86,016 |
| AS15685 | Casablanca INT | 83,456 |
| AS12767 | T-Mobile Czech Republic a.s. | 68,608 |
| AS31246 | SMART Comp. a.s. | 67,584 |
| AS197451 | Brno University of Technology | 67,072 |
| AS39906 | CoProSys a.s. | 60,672 |
| AS24971 | Master Internet s.r.o. | 58,624 |
| AS28851 | Fortech s.r.o. | 58,368 |
| AS12570 | itself s.r.o. | 57,856 |
| AS15935 | ha-vel internet s.r.o. | 52,224 |
| AS44489 | STARNET, s.r.o. | 50,688 |
| AS24806 | INTERNET CZ, a.s. | 45,568 |
| AS47965 | Signalhorn Trusted Networks GmbH | 44,800 |
| AS6740 | TS-Data s.r.o. | 41,984 |
| AS25424 | InterneXt 2000, s.r.o. | 33,792 |
| AS41046 | Nej.cz s.r.o. | 32,768 |
| AS42908 | Nordic Telecom s.r.o | 32,768 |
| AS39392 | SuperNetwork s.r.o. | 31,488 |
| AS34093 | Libli s.r.o. | 28,672 |
| AS43708 | METRONET s.r.o. | 24,064 |
| AS47232 | ISP Alliance a.s. | 21,504 |
| AS29134 | Ignum s.r.o. | 20,480 |
| AS43541 | VSHosting s.r.o. | 19,712 |
| AS34040 | TTNET s.r.o. | 19,456 |
| AS39791 | Telco Pro Services, a. s. | 19,456 |
| AS49931 | SITKOM spol. s r.o. | 17,664 |
| AS61296 | TechCom s.r.o. | 17,408 |
| AS8251 | FreeTel, s.r.o. | 17,408 |
| AS49985 | IP4ISP z.s.p.o | 17,408 |
| AS28972 | M-SOFT, spol. s r.o. | 16,384 |
| AS196822 | SELECT SYSTEM, s.r.o. | 16,384 |
| AS197197 | M.NET STUDENKA s. r. o. | 16,384 |
| AS51351 | LTD Objedinennaja Setevaja Kompanija | 16,384 |
| AS50022 | Kristelecom Ltd. | 16,384 |
| AS196735 | JON.CZ s.r.o. | 16,384 |
| AS20723 | AVONET, s.r.o. | 15,360 |
| AS42306 | Edera Group a.s. | 14,336 |
| AS21430 | WIA spol. s.r.o. | 13,824 |
| AS204860 | NetX R&D z.s. | 13,824 |
| AS35592 | Coolhousing s.r.o. | 13,568 |
| AS207187 | TKR Jasek, s.r.o. | 13,312 |
| AS198605 | AVAST Software s.r.o. | 13,056 |
| AS197013 | Sprintel s.r.o. | 12,800 |
| AS24641 | FASTER CZ spol. s r.o. | 12,800 |
| AS15614 | Dragon Internet a.s. | 12,288 |
| AS48474 | Libli s.r.o. | 12,288 |
| AS34315 | Dial Telecom, a.s. | 12,288 |
| AS197019 | WEDOS Internet, a.s. | 11,264 |
| AS43542 | OptoNet Communication, spol. s.r.o. | 11,264 |
| AS50698 | TETA s.r.o. | 11,264 |
| AS196845 | OMEGA tech s.r.o. | 11,264 |
| AS198171 | HOSTING90 systems s.r.o. | 10,752 |
| AS35361 | GREPA Networks s.r.o. | 10,240 |
| AS50241 | UnitTelecom Ltd | 10,240 |
| AS49106 | Opticom Group CJSC | 10,240 |
| AS35214 | Libli s.r.o. | 10,240 |
| AS47834 | SOFTEX NCP, s.r.o. | 10,240 |
| AS34080 | MIRAMO spol. s.r.o. | 10,240 |
| AS43070 | JAW.cz s.r.o. | 9,728 |
| AS48574 | Planet A, a.s. | 9,216 |
| AS49101 | KABELOVA TELEVIZE CZ s.r.o. | 9,216 |
| AS49889 | Crystal Telecom Ltd | 8,448 |
| AS203072 | DomaTV s.r.o. | 8,448 |
| AS42000 | Futruy s.r.o. | 8,448 |
| AS51731 | GTT a.s. | 8,192 |
| AS25234 | ACTIVE 24 | 8,192 |
| AS57800 | Cadr-TV LLE TVRC | 8,192 |
| AS57564 | Libli s.r.o. | 8,192 |
| AS8913 | Mopos Communications A.S. | 8,192 |
| AS57069 | Dempsey and Clark s.r.o. | 8,192 |
| AS56566 | SATT a.s. | 8,192 |
| AS197798 | Net-Connect s.r.o. | 8,192 |
| AS51891 | GSP ltd. | 8,192 |
| AS198002 | FDLnet.CZ, s.r.o. | 8,192 |
| AS51420 | cyrilek.net .z.s. | 8,192 |
| AS62160 | Yes Networks Unlimited Ltd | 8,192 |
| AS47493 | WMS s.r.o. | 8,192 |
| AS43709 | SilesNet s.r.o. | 8,192 |
| AS43507 | RETE internet, s.r.o. | 8,192 |
| AS35613 | NetDataComm, s.r.o. | 8,192 |
| AS35236 | 2 connect a.s. | 8,192 |
| AS202237 | Wic-Net, s.r.o. | 8,192 |
| AS33943 | Cesky Bezdrat, s.r.o. | 8,192 |
| AS201476 | ISP Alliance a.s. | 7,936 |
| AS198668 | Tlapnet s.r.o. | 7,424 |
| AS8518 | RFE/RL, Inc., organizacni slozka | 7,168 |
| AS39235 | Libli s.r.o. | 7,168 |
| AS33883 | TRIOPTIMUM s.r.o. | 7,168 |
| AS35046 | OMEGA plus Chrudim s.r.o. | 7,168 |
| AS48926 | Pe3ny Net s.r.o. | 7,168 |
| AS25192 | CZ.NIC, z.s.p.o. | 6,400 |
| AS29583 | Spinoco Czech Republic, a.s. | 6,400 |
| AS44065 | NETAIR s.r.o. | 6,144 |
| AS200918 | Pavel Zizka | 6,144 |
| AS197307 | Core4Net, s.r.o. | 6,144 |
| AS43413 | NEW TELEKOM, spol. s r.o. | 6,144 |
| AS51428 | IRONNET Ltd. | 6,144 |
| AS28905 | BECO Link,spol.s.r.o. | 6,144 |
| AS59479 | GEMNET s.r.o. | 6,144 |
| AS207198 | Kabelova televize Koprivnice, s.r.o. | 6,144 |
| AS34222 | ZONER software, a.s | 6,144 |
| AS47114 | SychrovNET s.r.o | 6,144 |
| AS50025 | Net Television Ltd | 6,144 |
| AS39761 | ABAK, Ltd. | 6,144 |
| AS198813 | SychrovNET s.r.o | 6,144 |
| AS48494 | BUKO LTD | 5,120 |
| AS198403 | Matrigo s.r.o. | 5,120 |
| AS50825 | UVT Internet s.r.o. | 5,120 |
| AS48661 | AIRWAYNET, a.s. | 5,120 |
| AS41670 | hkfree.org z.s. | 5,120 |
| AS62178 | MASTER IT Technologies, a.s. | 5,120 |
| AS30877 | Ariadna-Link CJSC | 5,120 |
| AS202895 | TFnet s.r.o. | 5,120 |
| AS39790 | Web4U s.r.o. | 5,120 |
| AS202618 | Rychly drat, s.r.o. | 5,120 |
| AS39817 | OvaNet, a.s. | 5,120 |
| AS49767 | INTERNET Pb, spol. s r.o. | 5,120 |
| AS196843 | KHnet.info, z.s. | 5,120 |
| AS49025 | PRO-ZETA a.s. | 5,120 |
| AS207242 | NOEL, s.r.o. | 5,120 |
| AS42189 | Druzstvo EUROSIGNAL | 5,120 |
| AS197296 | Maxtel s.r.o. | 5,120 |
| AS42477 | Cerberos s.r.o. | 5,120 |
| AS31349 | a-net Liberec s.r.o. | 5,120 |
| AS197550 | Internet4you.cz, spol. s r.o. | 4,864 |
| AS60592 | Gransy s.r.o. | 4,864 |
| AS52092 | Alf servis, s.r.o. | 4,608 |
| AS43203 | TELCONET s.r.o. | 4,352 |
| AS57496 | AIRESS CESKO s.r.o. | 4,096 |
| AS49890 | ABLE agency, s.r.o. | 4,096 |
| AS198991 | CET 21 spol. s.r.o. | 4,096 |
| AS51800 | FIBER Network s.r.o. | 4,096 |
| AS51968 | NEOS v.o.s. | 4,096 |
| AS48780 | OLTELECOM JSC | 4,096 |
| AS197846 | Radovan Ochvat trading as SAO Computers | 4,096 |
| AS48417 | ITS akciova spolecnost | 4,096 |
| AS52115 | JaroNet s.r.o. | 4,096 |
| AS47868 | SUPRO, spol. s r.o. | 4,096 |
| AS56360 | TRINITY CZECH REPUBLIC, s.r.o. | 4,096 |
| AS47269 | Core4Net, s.r.o. | 4,096 |
| AS56442 | Lubos Hutar | 4,096 |
| AS44070 | MCnet, s.r.o. | 4,096 |
| AS56450 | Alberon Letohrad s.r.o | 4,096 |
| AS56456 | C2NET s.r.o. | 4,096 |
| AS204064 | ISP Alliance a.s. | 4,096 |
| AS41453 | SITEL spol. s r.o. | 4,096 |
| AS57188 | ORKA systems, s.r.o. | 4,096 |
| AS62099 | JM-Net, z.s. | 4,096 |
| AS197029 | LAM plus s.r.o. | 4,096 |
| AS39904 | MERIT GROUP a.s | 4,096 |
| AS201730 | DataSpring s.r.o. | 4,096 |
| AS57279 | Sauron CZ s.r.o. | 4,096 |
| AS57287 | OtavaNet s.r.o. | 4,096 |
| AS29086 | GiTy, a.s. | 4,096 |
| AS57294 | Internet Expert s.r.o. | 4,096 |
| AS57399 | MONEX s.r.o. | 4,096 |
| AS21045 | K-net Technical International Group, s.r.o. | 4,096 |
| AS196782 | Marek Smutny | 4,096 |
| AS198420 | CMS Consulting s.r.o. | 4,096 |
| AS198500 | Masarykova univerzita - Ustav vypocetni techniky | 4,096 |
| AS200678 | ISP Alliance a.s. | 3,328 |
| AS57077 | AB-NET s.r.o. | 3,072 |
| AS56973 | VITKOVICE IT SOLUTIONS a.s. | 3,072 |
| AS48298 | MINISTERSTVO VNITRA CR | 3,072 |
| AS48364 | Radim Pytela - AC Vyskov | 3,072 |
| AS44002 | Sys-DataCom s.r.o. | 3,072 |
| AS197046 | FIXnet s.r.o. | 3,072 |
| AS44712 | eHAMnet, s.r.o. | 3,072 |
| AS47317 | Web4ce, s.r.o. | 3,072 |
| AS43037 | Seznam.cz, a.s. | 3,072 |
| AS34047 | Bystrov Dmitriy Sergeevich | 3,072 |
| AS206548 | Tlap s.r.o. | 3,072 |
| AS197879 | HelaPC s.r.o. | 3,072 |
| AS47727 | Warnet.cz s.r.o. | 3,072 |
| AS43614 | Economia a.s. | 3,072 |
| AS198031 | Trustica s.r.o. | 3,072 |
| AS200059 | AIRWEB, spol. s r.o. | 3,072 |
| AS49320 | Golitsyno Telecom Ltd | 3,072 |
| AS34955 | Martin Vicenik | 2,816 |
| AS198167 | Apptocloud.com s.r.o. | 2,816 |
| AS47909 | Baikal-Telecom Ltd. | 2,560 |
| AS201811 | Austole s.r.o. | 2,560 |
| AS198977 | UnArtel s.r.o. | 2,560 |
| AS51234 | Telecompany Fialka Ltd. | 2,560 |
| AS50398 | Fast Communication, s.r.o. | 2,560 |
| AS197206 | BusinessCom CZ spol. s r.o. | 2,560 |
| AS52058 | Michal Najman | 2,560 |
| AS34049 | H-data, spol. s r.o. | 2,304 |
| AS6881 | NIX.CZ z.s.p.o. | 2,304 |
| AS34911 | ELDATA prazska s.r.o. | 2,304 |
| AS47949 | gsnet.cz s.r.o. | 2,304 |
| AS50301 | BrazdimNET s.r.o. | 2,304 |
| AS44430 | MaRcom-Eko s.r.o. | 2,304 |
| AS48960 | AQUA,a.s. | 2,304 |
| AS50163 | Altnet s.r.o. | 2,048 |
| AS196684 | VITALATIV, s.r.o. | 2,048 |
| AS196815 | LAN servis s.r.o. | 2,048 |
| AS196861 | DIGITAL ACTION s.r.o. | 2,048 |
| AS196873 | Netlancers s.r.o. | 2,048 |
| AS197083 | K2 atmitec s.r.o. | 2,048 |
| AS197218 | PP Dmutrashko Evgeny Vitalievich | 2,048 |
| AS197277 | State Institute for Drug Control | 2,048 |
| AS197393 | Ladislav Rudolf | 2,048 |
| AS197442 | Libli s.r.o. | 2,048 |
| AS197542 | Jan Saulich | 2,048 |
| AS197565 | Golden activity s.r.o. | 2,048 |
| AS198161 | Sokolovska uhelna, pravni nastupce, a.s. | 2,048 |
| AS198248 | Richard Filip | 2,048 |
| AS198282 | SAT - AN CableNet SE | 2,048 |
| AS199101 | Libli s.r.o. | 2,048 |
| AS200114 | PRO-COMUNICATION s.r.o | 2,048 |
| AS200848 | Miroslav Holienka | 2,048 |
| AS201648 | Plzensky kraj | 2,048 |
| AS201654 | Web4Soft Internet s.r.o. | 2,048 |
| AS203165 | Statni pokladna Centrum sdilenych sluzeb, s.p. | 2,048 |
| AS204165 | Cznet s.r.o. | 2,048 |
| AS20609 | KAZA.cz s.r.o. | 2,048 |
| AS206420 | KABEL servis Praha spol. s r.o. | 2,048 |
| AS206429 | CORSAT s.r.o | 2,048 |
| AS206818 | Clabor Tech Solutions LLC | 2,048 |
| AS209810 | Netcore services s.r.o. | 2,048 |
| AS210306 | ADV Computers s.r.o. | 2,048 |
| AS21241 | Global Payments Europe, s.r.o. | 2,048 |
| AS31461 | Moravia IT s.r.o. | 2,048 |
| AS38952 | MAFRA, a.s. | 2,048 |
| AS39896 | Angel Systems s.r.o. | 2,048 |
| AS40964 | ASTELNET s.r.o. | 2,048 |
| AS41030 | Jaroslav Novotny | 2,048 |
| AS43757 | ICZ a.s. | 2,048 |
| AS43895 | Zentiva Group, a.s | 2,048 |
| AS44424 | Internet Mall, a.s. | 2,048 |
| AS44500 | Vlasimnet s.r.o. | 2,048 |
| AS47131 | PH, spol. s r. o. | 2,048 |
| AS47767 | Regionalni centrum Olomouc s.r.o. | 2,048 |
| AS47913 | Cerberos s.r.o. | 2,048 |
| AS48451 | Prazska energetika, a.s. | 2,048 |
| AS50348 | KVADOS, a.s. | 2,048 |
| AS50442 | Multi-Net plus Ltd | 2,048 |
| AS50971 | JHComp s.r.o. | 2,048 |
| AS50975 | AVX Czech republic s.r.o | 2,048 |
| AS51210 | KRAXNET s.r.o. | 2,048 |
| AS51400 | SPOJE.NET s.r.o. | 2,048 |
| AS51524 | Ales Tesacek | 2,048 |
| AS51525 | Informacionnuye technologiyi Ltd | 2,048 |
| AS51655 | Ilim Telecom Ltd. | 2,048 |
| AS52029 | Ing. Petr Lukes | 2,048 |
| AS52084 | ATL Obchodni s.r.o. | 2,048 |
| AS52130 | LiveSport s.r.o. | 2,048 |
| AS52154 | mjanik.net s.r.o. | 2,048 |
| AS52176 | TTC TELEKOMUNIKACE s.r.o. | 2,048 |
| AS56624 | Petr Kadanik | 2,048 |
| AS56821 | KnVnet services s.r.o. | 2,048 |
| AS57288 | StaMPi, spol. s r.o. | 2,048 |
| AS57566 | Wircom s.r.o. | 2,048 |
| AS57798 | IT-Net ltd. | 2,048 |
| AS57823 | INERCOM, s.r.o. | 2,048 |
| AS59959 | SferiaNET.cz s.r.o. | 2,048 |
| AS59970 | AmigoNet s.r.o. | 2,048 |
| AS60529 | Miroslav Klement | 2,048 |
| AS61425 | Mlada fronta a.s. | 2,048 |
| AS62011 | UNHfree.net z.s. | 2,048 |
| AS200844 | STUDENT AGENCY k.s. | 1,792 |
| AS206334 | AVAST Software s.r.o. | 1,792 |
| AS202921 | CC INTERNET s.r.o. | 1,792 |
| AS51134 | INTACTO GAMES a.s. | 1,792 |
| AS42078 | XOTEL SIA | 1,792 |
| AS199803 | ComSource s.r.o. | 1,536 |
| AS48091 | Kraj Vysocina | 1,536 |
| AS62403 | Disk Group Ltd. | 1,536 |
| AS6679 | Skadi Telecom JSC | 1,536 |
| AS42995 | Geotelecom Ltd. | 1,536 |
| AS196653 | BEST-NET s.r.o. | 1,536 |
| AS58239 | hanspaul-city.net s.r.o. | 1,536 |
| AS197694 | Municipal Office of the City Prague | 1,536 |
| AS49013 | Fusion Media, s.r.o. | 1,280 |
| AS197376 | AUTOCONT a.s. | 1,280 |
| AS51211 | PE Rulev Dmitriy Alexandrovich | 1,280 |
| AS47110 | Cloud4com, a.s. | 1,280 |
| AS198725 | Ultimum Technologies s.r.o. | 1,280 |
| AS197920 | SKODA ICT s.r.o. | 1,280 |
| AS49359 | Dmitry Kozhushko | 1,280 |
| AS204332 | TKC system s.r.o. | 1,280 |
| AS206270 | TrojanoviceNET s.r.o. | 1,024 |
| AS206344 | AUKRO s.r.o. | 1,024 |
| AS20643 | PilsFree servis, s.r.o. | 1,024 |
| AS206438 | MX-NET Telekomunikace s.r.o. | 1,024 |
| AS206566 | savana.cz s.r.o | 1,024 |
| AS206569 | TEORA s.r.o. | 1,024 |
| AS206784 | Internet Praha Josefov s.r.o. | 1,024 |
| AS206951 | BMB-Green s.r.o. | 1,024 |
| AS207015 | Position s.r.o. | 1,024 |
| AS20708 | SKODA AUTO a.s. | 1,024 |
| AS207153 | Stream-iT, s.r.o. | 1,024 |
| AS60266 | Home Credit International a.s. | 1,024 |
| AS209816 | Trend Digital Marketing s.r.o. | 1,024 |
| AS209947 | M-wifi internet s.r.o. | 1,024 |
| AS210011 | People Above Politics Inc. | 1,024 |
| AS210015 | Interface Services LLC | 1,024 |
| AS210061 | Ladislav Kepl | 1,024 |
| AS13199 | Jaroslav Doubrava | 1,024 |
| AS204007 | Kleissner Investments s.r.o. | 1,024 |
| AS203550 | i2net cz s.r.o. | 1,024 |
| AS25238 | MONETA Money Bank, a.s. | 1,024 |
| AS203450 | LOGICPRIM s.r.o. | 1,024 |
| AS203411 | FORTUNA GAME a.s. | 1,024 |
| AS203385 | Pernix systems s.r.o. | 1,024 |
| AS203376 | Mailkit s.r.o. | 1,024 |
| AS203365 | Optet network, s. r. o. | 1,024 |
| AS203328 | PVfree.net, z. s. | 1,024 |
| AS203018 | PAMICO CZECH, s.r.o. | 1,024 |
| AS29504 | Freenet Liberec, z.s. | 1,024 |
| AS202979 | NGA Services, spol. s r.o. | 1,024 |
| AS30738 | NetArt Group s.r.o. | 1,024 |
| AS202877 | VEJNET.CZ s.r.o. | 1,024 |
| AS31559 | Zdenek Soucek | 1,024 |
| AS202874 | Zlinsky Kraj | 1,024 |
| AS202872 | KME, spol. s r. o. | 1,024 |
| AS202774 | COMTEX s.r.o. | 1,024 |
| AS202719 | Pranet s.r.o. | 1,024 |
| AS202682 | G2 server CZ s.r.o. | 1,024 |
| AS202657 | Pavel Jochim | 1,024 |
| AS202605 | EMPECOM, s.r.o. | 1,024 |
| AS202556 | Spolek Krivonet | 1,024 |
| AS202551 | INERA.CZ s.r.o. | 1,024 |
| AS35096 | Alef Nula a.s. | 1,024 |
| AS35420 | Perspektiva Ltd. | 1,024 |
| AS39736 | ICT Support, s.r.o. | 1,024 |
| AS201926 | Futurenet ISP s.r.o. | 1,024 |
| AS201727 | Spolek bubakov.net | 1,024 |
| AS201625 | United Networks SE | 1,024 |
| AS41779 | LajsiNET s.r.o. | 1,024 |
| AS201559 | United Networks SE | 1,024 |
| AS201548 | Milan Zelenka | 1,024 |
| AS42269 | Foton Ltd | 1,024 |
| AS201533 | United Networks SE | 1,024 |
| AS201457 | Pojistovna Ceske sporitelny, a.s., Vienna Insurance Group | 1,024 |
| AS43129 | Smileinvest LTD | 1,024 |
| AS201163 | Komercni banka, a.s. | 1,024 |
| AS201116 | Vybezek.NET s.r.o. | 1,024 |
| AS200985 | BOK*Net, z.s. | 1,024 |
| AS200874 | Liberecky kraj | 1,024 |
| AS61110 | Sprava informacnich technologii mesta Plzne, p.o. | 1,024 |
| AS200828 | TERMS a.s. | 1,024 |
| AS61169 | SporkNeT s.r.o. | 1,024 |
| AS200717 | STEN.cz s.r.o. | 1,024 |
| AS44770 | Savvy s.r.o. | 1,024 |
| AS44910 | FH Miraj-94 | 1,024 |
| AS44984 | Fortion Networks, s.r.o. | 1,024 |
| AS200635 | pragmatel s.r.o. | 1,024 |
| AS200600 | Seznam.cz datova centra, s.r.o. | 1,024 |
| AS200474 | CRFreeNet, z.s. | 1,024 |
| AS47681 | RIO Media a.s. | 1,024 |
| AS200449 | Qrator Labs CZ s.r.o. | 1,024 |
| AS47749 | ORIFLAME SOFTWARE s.r.o. | 1,024 |
| AS200155 | Technologicke centrum Pisek s.r.o. | 1,024 |
| AS48085 | DNIPRO-Techcenter Ltd | 1,024 |
| AS199722 | Sberbank CZ, a.s. | 1,024 |
| AS199711 | National Cyber and Information Security Agency | 1,024 |
| AS199657 | TNtech, s.r.o. | 1,024 |
| AS48602 | Connect plus s.r.o. | 1,024 |
| AS199600 | Virtis s.r.o. | 1,024 |
| AS199490 | INTERCONNECT s.r.o. | 1,024 |
| AS199405 | Oslavany.NET | 1,024 |
| AS199350 | Ministerstvo financi | 1,024 |
| AS199298 | Jan Stetina | 1,024 |
| AS49142 | HBO Europe s.r.o. | 1,024 |
| AS49573 | JimmyNet s.r.o. | 1,024 |
| AS49839 | MKS Ltd. | 1,024 |
| AS198814 | ALPHA StylSoft, s.r.o. | 1,024 |
| AS198657 | GOLDWARE s.r.o. | 1,024 |
| AS12344 | CZECH IT CLUSTER, druzstvo | 1,024 |
| AS50415 | Ahosting a.s. | 1,024 |
| AS61981 | Mach3net s.r.o. | 1,024 |
| AS50497 | Orlicom Ltd | 1,024 |
| AS198346 | NETFORMS s.r.o. | 1,024 |
| AS50784 | Intraweb servis s.r.o. | 1,024 |
| AS198284 | Mesto Velka Bystrice | 1,024 |
| AS12984 | PilsFree, z. s. | 1,024 |
| AS50980 | E3.cz, sro | 1,024 |
| AS51025 | VSHosting s.r.o. | 1,024 |
| AS198212 | "TeleNet Sayansk" LLC | 1,024 |
| AS51371 | Ashtarak-Elit Ltd. | 1,024 |
| AS51382 | Ing. Leos Janouch | 1,024 |
| AS51424 | Jiri Sperl | 1,024 |
| AS62102 | Informacni sluzby energetika a.s. | 1,024 |
| AS62159 | Happy Technik s.r.o. | 1,024 |
| AS198101 | Kooperativa pojistovna, a.s., Vienna Insurance Group | 1,024 |
| AS51744 | Non-profit organization Jablonka.cz | 1,024 |
| AS197895 | ONYX engineering, spol. s r.o. | 1,024 |
| AS62176 | EZE A.S. | 1,024 |
| AS197786 | Telefonnyie seti Ltd. | 1,024 |
| AS62405 | Brouzdal, s.r.o. | 1,024 |
| AS197575 | CHP "Mediana-Servis" | 1,024 |
| AS56344 | Viridium.cz s.r.o. | 1,024 |
| AS197444 | Vlastimil Drazsky | 1,024 |
| AS197412 | Vladislav Heczko PE | 1,024 |
| AS56562 | Telecom Plus Company Ltd. | 1,024 |
| AS56827 | mirnet s.r.o. | 1,024 |
| AS56936 | Mbit City Ltd. | 1,024 |
| AS57007 | NITEX ISP s.r.o. | 1,024 |
| AS57081 | Scarfbot Technologies, s.r.o. | 1,024 |
| AS57158 | MELVI s.r.o. | 1,024 |
| AS57191 | LLC IT Business | 1,024 |
| AS196978 | Milos Tuma | 1,024 |
| AS196952 | BEZVANET s.r.o. | 1,024 |
| AS196916 | BusinessCom CZ spol. s r.o. | 1,024 |
| AS57560 | XLNET s.r.o. | 1,024 |
| AS57707 | Greendata s.r.o. | 1,024 |
| AS57779 | ICTIS.CZ s.r.o. | 1,024 |
| AS57904 | Vevynet s.r.o. | 1,024 |
| AS58220 | Tomas Budai | 1,024 |
| AS59664 | Opton s.r.o. | 1,024 |
| AS59871 | Heureka Shopping s.r.o | 1,024 |
| AS59925 | Seonet Multimedia s.r.o. | 1,024 |
| AS8646 | cloudinfrastack, s.r.o. | 1,024 |
| AS59984 | KLFREE NETWORKS, s.r.o. | 1,024 |
| AS204383 | SPCom s.r.o. | 1,024 |
| AS204394 | Cortex, a.s. | 1,024 |
| AS204409 | Komunikacni stroje s.r.o. | 1,024 |
| AS204567 | PCKBnet s.r.o. | 1,024 |
| AS204570 | Vratislav Kriz | 1,024 |
| AS204772 | Reditelstvi silnic a dalnic CR | 1,024 |
| AS204351 | NAM system, a.s. | 1,024 |
| AS204886 | Metropolitni sit Humpolec spol. s r.o. | 1,024 |
| AS204943 | NTV cable s.r.o. | 1,024 |
| AS204949 | Ceskomoravske informacni systemy s.r.o. | 1,024 |
| AS205002 | CUBESOL, s.r.o. | 1,024 |
| AS205044 | Pro-Line comp s.r.o. | 1,024 |
| AS205234 | Brnenske komunikace a.s. | 1,024 |
| AS205300 | Sunfox s.r.o. | 1,024 |
| AS205345 | HoralNET s.r.o. | 1,024 |
| AS205400 | VIVO CONNECTION spol. s r.o. | 1,024 |
| AS205535 | Windyghoul s.r.o. | 1,024 |
| AS205619 | Jiri Chalabala | 1,024 |
| AS205653 | Jumpshot s.r.o. | 1,024 |
| AS205863 | Stepan Pokorny | 1,024 |
| AS205968 | GeneralNet s.r.o. | 1,024 |
| AS60086 | Valvera s.r.o. | 1,024 |
| AS206142 | Internet TV, Inc. | 1,024 |
| AS206177 | SitePark s.r.o. | 1,024 |
| AS206212 | KCG spol. s.r.o. | 1,024 |
| AS206287 | LysaFree, z.s. | 1,024 |
| AS199220 | KrU Stredoceskeho kraje | 768 |
| AS25553 | TRK Gluhov Ltd. | 768 |
| AS203208 | Czech Telecommunication Office | 768 |
| AS196943 | Vissado s.r.o. | 768 |
| AS57472 | JR-NET, s.r.o. | 768 |
| AS21205 | ING WholeSale Bank | 768 |
| AS48098 | Valikov Yury Aleksandrovich | 768 |
| AS39307 | Digital Communications Ltd. | 768 |
| AS49121 | Infinity Telecom, s.r.o. | 768 |
| AS59888 | PE Grinkiv Nadia Oliksandrivna | 768 |
| AS206712 | FELDSAM s.r.o. | 768 |
| AS51245 | Center of Information Technologies Ltd. | 512 |
| AS198143 | Ceska Posta s.p. | 512 |
| AS49997 | Piton Ltd | 512 |
| AS198103 | CCS Ceska spolecnost pro platebni karty s.r.o. | 512 |
| AS50695 | VLTAVA LABE MEDIA a.s. | 512 |
| AS197144 | PP SVS Stream | 512 |
| AS200806 | BOHEMIA ENERGY entity s.r.o. | 512 |
| AS196687 | obcanske sdruzeni TRENET | 512 |
| AS201608 | UnArtel s.r.o. | 512 |
| AS203080 | SAP SE | 512 |
| AS198564 | Elcoma s.r.o. | 512 |
| AS197698 | D-H-T SYSTEMS s.r.o. | 512 |
| AS209795 | SPC-net s.r.o. | 512 |
| AS51448 | Uralskie Kabelnye Seti Ltd. | 512 |
| AS42174 | Sipcom Ltd. | 512 |
| AS25321 | GROUP 4 Secure Solutions a.s. | 512 |
| AS49313 | Seva-Host Ltd | 512 |
| AS51727 | SKODA POWER s.r.o. | 512 |
| AS50015 | Oleksandr Butenko | 512 |
| AS57919 | Wicom Ltd. | 512 |
| AS207167 | amccomp s.r.o. | 512 |
| AS59681 | Satellit PE | 512 |
| AS50321 | FOP "Reznichenko Sergey Mykolayovich" | 512 |
| AS49334 | Sergey Krashevich | 512 |
| AS43130 | NKL LLC | 512 |
| AS200070 | CZ.NIC, z.s.p.o. | 512 |
| AS49506 | GumsNet Ltd | 512 |
| AS49510 | TCV Ltd | 512 |
| AS60275 | PlzenecNET z. s. | 512 |
| AS202131 | ISP Alliance a.s. | 512 |
| AS30928 | ZAO Rubtsovsk | 512 |
| AS197353 | NN Management Services, s.r.o. | 512 |
| AS43866 | Altron a.s. | 512 |
| AS204668 | ASTANA Technologies s.r.o. | 512 |
| AS196789 | Norfes JSC | 512 |
| AS49580 | Monet +, a.s. | 512 |
| AS198621 | AVAST Software s.r.o. | 512 |
| AS50037 | Server Ltd | 512 |
| AS203645 | Jan Ryznar | 512 |
| AS201934 | Satan s.r.o. | 512 |
| AS201931 | LBnet.cz s.r.o. | 512 |
| AS56988 | Mobile & Television Communications LLC | 512 |
| AS62083 | Fio banka, a.s. | 512 |
| AS206591 | Alza.cz a.s. | 512 |
| AS196764 | RFI Minprirody Rossii FBGU | 512 |
| AS206785 | Magistrat mesta Brna | 512 |
| AS201594 | Czech Telecommunication Office | 256 |
| AS51331 | SychrovNET s.r.o | 256 |
| AS205982 | Mraknet s.r.o. | 256 |
| AS197566 | OK-NET s.r.o. | 256 |
| AS42847 | GlobexBank JSC | 256 |
| AS205724 | T.S.BOHEMIA a.s. | 256 |
| AS62092 | LTV Europe Sicherheitstechnik GmbH i.G. | 256 |
| AS201263 | Brno University of Technology | 256 |
| AS44104 | LCJ s.r.o. | 256 |
| AS56508 | Regionecoproduct-Povolzhie Ltd. | 256 |
| AS56891 | Ceskomoravska zarucni a rozvojova banka, a.s. | 256 |
| AS61123 | Ekoniva-Tehnika Ltd. | 256 |
| AS206329 | Infor (Barneveld) BV | 256 |
| AS199059 | Maurice Ward & Co., s.r.o. | 256 |
| AS49833 | Alexandr Y Potkin | 256 |
| AS199806 | DCIT, a.s. | 256 |
| AS60218 | IT8 - Informacni technologie s.r.o. | 256 |
| AS48405 | Logica Czech republic s.r.o. | 256 |
| AS25093 | Ceska sporitelna a.s. | 256 |
| AS206683 | Moravskoslezske inovacni centrum Ostrava, a.s. | 256 |
| AS51463 | FAJNCOM s.r.o. | 256 |
| AS206468 | Treboradice.net z.s. | 256 |
| AS50097 | IPVOIP s.r.o. | 256 |
| AS56894 | Balezinskie lokalnyie seti, Ltd. | 256 |
| AS28892 | Cesky urad zememericky a katastralni | 256 |
| AS196849 | Marcela Byrtusova | 256 |
| AS203299 | Ivo Hazmuk | 256 |
| AS59552 | VHG Ltd | 256 |
| AS50248 | Vladivostok international airport JSC | 256 |
| AS50250 | Stavropol Committee for state purchases | 256 |
| AS61416 | STATE AUTONOMOUS ESTABLISHMENT OF THE ARKHANGELSK REGION "MANAGEMENT OF INFORMATION AND COMMUNICATION TECHNOLOGY OF ARKHANGELSK REGION" | 256 |
| AS9053 | VSHosting s.r.o. | 256 |
| AS50356 | Camelot Ltd | 256 |
| AS198494 | PREGIS, a.s | 256 |
| AS196762 | ALKOM Security, a.s. | 256 |
| AS20701 | Marias sro | 256 |
| AS3229 | Intek Ltd. | 256 |
| AS57572 | Lesta Ltd. | 256 |
| AS33877 | Druzstvo OFX | 256 |
| AS51884 | Tera Telecom Ltd | 256 |
| AS199665 | Hana Juzkova | 256 |
| AS57194 | CHP Koshelnik Sergey Valentinovich | 256 |
| AS57760 | Kinet s.r.o. | 256 |
| AS59825 | Green Technology Ltd. | 256 |
| AS199604 | OLOMOUCKY KRAJ | 256 |
| AS34293 | J.S.tel s.r.o. | 256 |
| AS50843 | ACUTUS ltd. | 256 |
| AS15741 | Expiline Ltd. | 256 |
| AS48802 | OOO "Povolzhskiy Processingoviy Center" | 256 |
| AS197875 | UNIPETROL RPA, s.r.o. | 256 |
| AS59826 | PE Oleynik Dmitro Oleksandrovich | 256 |
| AS61985 | Technolink Ltd. | 256 |
| AS48890 | SOLVO ltd | 256 |
| AS202084 | Penta Investments, s.r.o. | 256 |
| AS202073 | ALTRON Business Solutions, a.s. | 256 |
| AS15380 | Air Navigation Services of the Czech Republic, state enterprise | 256 |
| AS200646 | BH securities, a.s. | 256 |
| AS56717 | OG Soft s.r.o. | 256 |
| AS61166 | Russian Federal Service for Alcohol Market Regulation | 256 |
| AS39453 | KSRZIS | 256 |
| AS201922 | amccomp s.r.o. | 256 |
| AS60724 | Sicuro Services s. r. o. | 256 |
| AS51278 | Ignum s.r.o. | 256 |
| AS61371 | FOP Martsinkevich Vyacheslav Anatolyevich | 256 |
| AS44672 | OncaOnca Ltd. | 256 |
| AS204113 | Security Information Service | 256 |
| AS20884 | O2 Czech Republic, a.s. | 256 |
| AS41359 | Telefonzentrale s.r.o. | 256 |
| AS41591 | Jaroslav Masaryk | 256 |
| AS204247 | Cznet s.r.o. | 0 |
| AS204992 | NETRAGY LLC | 0 |
| AS201464 | ISP Alliance a.s. | 0 |
| AS56427 | Michal Hradil | 0 |
| AS201267 | Kapchan company spol. s r.o. | 0 |
| AS43043 | OPSYLON LLC. | 0 |
| AS59969 | FOP Kameristov Andrey Evgenovuch | 0 |
| AS201228 | Czech metrology institute | 0 |
| AS201187 | Whois protection, this company does not own this domain name s.r.o. | 0 |
| AS201179 | Vaudevile s.r.o. | 0 |
| AS8747 | Dial Telecom, a.s. | 0 |
| AS206384 | Artemis Hosting s.r.o. | 0 |
| AS201007 | Tesco Stores CR a.s. | 0 |
| AS205549 | FixPro,z.s. | 0 |
| AS207048 | SPANET s.r.o. | 0 |
| AS200809 | ASJA CZ s.r.o. | 0 |
| AS200733 | ALLDIM s.r.o. | 0 |
| AS6706 | Dial Telecom, a.s. | 0 |
| AS200673 | AMARTI s.r.o. | 0 |
| AS204375 | SychrovNET s.r.o | 0 |
| AS47122 | inet4 s.r.o. | 0 |
| AS61195 | Peering.cz s.r.o. | 0 |
| AS47200 | NIX.CZ z.s.p.o. | 0 |
| AS205885 | Navmatix s.r.o. | 0 |
| AS200633 | CHISTOV PRAGA s.r.o. | 0 |
| AS197299 | CENTEL s.r.o. | 0 |
| AS205090 | NTX Technologies s.r.o. | 0 |
| AS197246 | Glow Internet s.r.o. | 0 |
| AS200394 | ER Business s.r.o. | 0 |
| AS200393 | ELAN plus, s.r.o. | 0 |
| AS200335 | EVA GROUP s.r.o. | 0 |
| AS47924 | Grigory Aleksandrovich Shushpanov | 0 |
| AS204405 | Durnet.cz sro | 0 |
| AS205121 | HOT Communication s.r.o. | 0 |
| AS206832 | Yes Networks Unlimited Ltd | 0 |
| AS48268 | Inter Fiber s.r.o. | 0 |
| AS197059 | HOTNET s.r.o. | 0 |
| AS204505 | IT & WP HOST s.r.o. | 0 |
| AS197026 | Galevi s.r.o. | 0 |
| AS199630 | Municipal Office of the City Prague | 0 |
| AS205122 | RA Pioneers s.r.o. | 0 |
| AS48959 | OOO "Paladin Invent" | 0 |
| AS15512 | UPC Ceska Republica, s.r.o. | 0 |
| AS49018 | Alphatech Resource Holdings s.r.o. | 0 |
| AS205123 | Adept Media Group s.r.o. | 0 |
| AS57376 | Vaclav Rosa | 0 |
| AS49418 | Domashnie Seti Ltd | 0 |
| AS49459 | Sigma plus Ltd. | 0 |
| AS204666 | Jiri Tlapak | 0 |
| AS57523 | AMEuroTel s.r.o. | 0 |
| AS198953 | PricewaterhouseCoopers IT Services, s.r.o. | 0 |
| AS198882 | Karlovarsky Kraj | 0 |
| AS57540 | Libli s.r.o. | 0 |
| AS49972 | IT ADMIRABLE SERVICE LTD | 0 |
| AS50107 | tcp cloud a.s. | 0 |
| AS198510 | Krajska zdravotni, a.s. | 0 |
| AS15494 | BT Limited, organizacni slozka | 0 |
| AS50491 | Planet A, a.s. | 0 |
| AS204746 | Komplet NET s.r.o. | 0 |
| AS50714 | Closed Joint Stock Company TransTeleCom | 0 |
| AS206050 | FreeNetwork s.r.o. | 0 |
| AS57780 | Vissado s.r.o. | 0 |
| AS50899 | Roman Bykovskyj | 0 |
| AS15485 | T-Mobile Czech Republic a.s. | 0 |
| AS51105 | CIS TELECOM UK LTD | 0 |
| AS206613 | Tipsport.net a.s. | 0 |
| AS51154 | Nej.cz s.r.o. | 0 |
| AS198250 | ELDATA prazska s.r.o. | 0 |
| AS204214 | S.I.C. spol. s r.o. | 0 |
| AS207239 | NetX R&D z.s. | 0 |
| AS209621 | DOBNET, z.s. | 0 |
| AS209680 | JetBrains, s. r. o. | 0 |
| AS209692 | FOXCONN CZ s.r.o. | 0 |
| AS205719 | Data & File Processing s.r.o. | 0 |
| AS209823 | Alphatech Resource Holdings s.r.o. | 0 |
| AS209834 | Brnonet s.r.o. | 0 |
| AS51403 | FOP Ljashenko Igor Ivanovich | 0 |
| AS210088 | KONTRAX FT, s.r.o. | 0 |
| AS210111 | Netcraft Solutions s.r.o. | 0 |
| AS210115 | Artemis Hosting s.r.o. | 0 |
| AS210169 | InloopX s.r.o. | 0 |
| AS210187 | Kistler Instrumente AG | 0 |
| AS210325 | Air Networks s.r.o. | 0 |
| AS204051 | FLEA s.r.o. | 0 |
| AS21142 | T-Mobile Czech Republic a.s. | 0 |
| AS206321 | STARTECH spol. s r.o. | 0 |
| AS21435 | Vodafone Czech Republic a.s. | 0 |
| AS203743 | ISP Alliance a.s. | 0 |
| AS203705 | Pavel Zizka | 0 |
| AS24828 | UPC Ceska Republica, s.r.o. | 0 |
| AS25036 | O2 Czech Republic, a.s. | 0 |
| AS51427 | HD Internet s.r.o. | 0 |
| AS203488 | DaLuNET s.r.o. | 0 |
| AS51449 | Kabelova televize Usti nad Orlici, spol. s r. o. | 0 |
| AS51521 | Resident Control s.r.o. | 0 |
| AS2605 | CESNET z.s.p.o. | 0 |
| AS2819 | T-Mobile Czech Republic a.s. | 0 |
| AS203342 | Ladislav Rudolf | 0 |
| AS28755 | ha-vel internet s.r.o. | 0 |
| AS28904 | PODA a.s. | 0 |
| AS29113 | UPC Ceska Republica, s.r.o. | 0 |
| AS29274 | Obcanske sdruzeni GAVANET | 0 |
| AS29525 | Virtualmaster, s.r.o. | 0 |
| AS204907 | Air Bank a.s. | 0 |
| AS204216 | netsearch s.r.o. | 0 |
| AS202911 | Diovetech s.r.o. | 0 |
| AS202888 | KETNET s.r.o. | 0 |
| AS198027 | VITKOVICE IT SOLUTIONS a.s. | 0 |
| AS51801 | Nano.cz s.r.o. | 0 |
| AS3234 | Parliament of the Czech Republic | 0 |
| AS206463 | Pavel Zizka | 0 |
| AS51902 | Web4Soft Internet s.r.o. | 0 |
| AS202733 | OK COMP s.r.o. | 0 |
| AS202732 | Ing Petr Sramek | 0 |
| AS34070 | DATin internet s.r.o. | 0 |
| AS51961 | Doyter Group Limited | 0 |
| AS52027 | Leos Zalio | 0 |
| AS34302 | Sprintel s.r.o. | 0 |
| AS34371 | Metropolitni s.r.o. | 0 |
| AS202522 | Libli s.r.o. | 0 |
| AS197815 | AVAST Software s.r.o. | 0 |
| AS205857 | Diverse Path Solutions Inc. | 0 |
| AS202066 | Nas NET s.r.o. | 0 |
| AS201987 | HEXAGEEK s.r.o. | 0 |
| AS60647 | Prazska plynarenska,a.s. | 0 |
| AS39408 | AVI druzstvo | 0 |
| AS15731 | Reliable Communications s.r.o. | 0 |
| AS60208 | J&T BANKA, a.s. | 0 |
| AS201761 | ISP Alliance a.s. | 0 |
| AS201732 | Maxicom Technologies s.r.o. | 0 |
| AS201671 | Emerald Real Group s.r.o. | 0 |
| AS60727 | K2 atmitec s.r.o. | 0 |
| AS60931 | LAN-Service Ltd. | 0 |
| AS5407 | PODA a.s. | 0 |
| AS41088 | N-SYS s.r.o. | 0 |
| AS41267 | GREPA Networks s.r.o. | 0 |
| AS41456 | KP NETWORK, spol. s r.o. | 0 |
| AS41711 | FreeTel, s.r.o. | 0 |
| AS41824 | O2 Czech Republic, a.s. | 0 |
| AS60143 | Brno University of Technology | 0 |
Details
Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
This page shows ASNs for Czech Republic. See the global ASN report for network, IP address information and whois details for other countries.