The list below shows how many ASNs are assigned to each region. Click on the region links to see more details about the specific ASNs and IP addresses that belong to each region.
| ASN | Name | IPv4 Num IPs | IPv6 Num IPs(/64) |
|---|---|---|---|
| AS2118 | RELCOM-AS - Reliable Communications s.r.o., CZ | 7,168 | 0 |
| AS2571 | DHLNET - DHL Information Services (Europe) s.r.o, CZ | 148,736 | 3,145,728 |
| AS2852 | CESNET2 - CESNET z.s.p.o., CZ | 848,896 | 34,359,738,368 |
| AS3161 | ASITPROFI - IT PROFI s.r.o., CZ | 512 | 0 |
| AS5588 | GTSCE - T-Mobile Czech Republic a.s., CZ | 166,144 | 12,884,901,888 |
| AS5610 | O2-CZECH-REPUBLIC - O2 Czech Republic, a.s., CZ | 1,544,192 | 47,278,260,224 |
| AS6740 | INEXT-CZ-ADA - InterneXt 2000, s.r.o., CZ | 41,984 | 0 |
| AS6881 | NIXCZ - NIX.CZ z.s.p.o., CZ | 2,560 | 8,589,934,592 |
| AS8251 | NFX_ZSPO - FreeTel, s.r.o., CZ | 17,408 | 4,294,967,296 |
| AS8646 | cloudinfrastack - cloudinfrastack, s.r.o., CZ | 1,024 | 0 |
| AS8747 | Dial_Telecom-special - Quantcom, a.s., CZ | 256 | 0 |
| AS8882 | AS8882 - AS8882 s.r.o., CZ | 0 | 65,536 |
| AS8913 | IPNet - Mopos Communications A.S., CZ | 8,192 | 4,294,967,296 |
| AS9053 | VSHOSTING-CDN - VSHosting s.r.o., CZ | 256 | 196,608 |
| AS9080 | GIN - Ipex Ltd., CZ | 62,464 | 4,294,967,296 |
| AS12344 | CZECHITC - CZECH IT CLUSTER, druzstvo, CZ | 1,024 | 8,589,934,592 |
| AS12570 | ITSELF - Nej.cz s.r.o., CZ | 53,760 | 38,654,705,664 |
| AS12767 | PRAGONET-AS - T-Mobile Czech Republic a.s., CZ | 66,560 | 34,359,738,368 |
| AS12984 | PILSFREE - PilsFree, z. s., CZ | 1,024 | 34,359,738,368 |
| AS13036 | TMOBILE-CZ - T-Mobile Czech Republic a.s., CZ | 958,464 | 38,654,705,664 |
| AS13199 | DOUBRAVA-NET - Jaroslav Doubrava, CZ | 1,024 | 34,359,738,368 |
| AS15380 | ANSCZ - Air Navigation Services of the Czech Republic, state enterprise, CZ | 256 | 65,536 |
| AS15425 | COMA - PODA a.s., CZ | 110,592 | 4,294,967,296 |
| AS15614 | Dragon - Dragon Internet a.s., CZ | 12,288 | 34,359,738,368 |
| AS15685 | CASABLANCA-AS - CASABLANCA INT a.s., CZ | 38,656 | 4,294,967,296 |
| AS15935 | HA-VEL-LOCAL-AS - ha-vel internet s.r.o., CZ | 51,712 | 4,295,098,368 |
| AS16019 | VODAFONE-CZ-AS - Vodafone Czech Republic a.s., CZ | 1,211,136 | 356,482,351,104 |
| AS16246 | AS16246 - Nej.cz s.r.o., CZ | 135,424 | 47,244,640,256 |
| AS20609 | kazaczsro - KAZA.cz s.r.o., CZ | 2,048 | 4,295,032,832 |
| AS20643 | CZ-PILSFREESERVIS-AS - PilsFree servis, s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS20701 | CZNIC-AS3 - CZ.NIC, z.s.p.o., CZ | 512 | 131,072 |
| AS20708 | SKODA-AUTO - SKODA AUTO a.s., CZ | 1,024 | 65,536 |
| AS20723 | MGI - AVONET, s.r.o., CZ | 16,384 | 34,359,738,368 |
| AS21045 | QnetCZ - K-net Technical International Group, s.r.o., CZ | 4,096 | 0 |
| AS21082 | AS-DCOU - Reliable Communications s.r.o., CZ | 2,560 | 0 |
| AS21241 | MUZO-AS - Global Payments Europe, s.r.o., CZ | 2,048 | 0 |
| AS21430 | WIA-AS - WIA spol. s.r.o., CZ | 40,192 | 4,295,163,904 |
| AS24641 | FASTER-AS - FASTER CZ spol. s r.o., CZ | 17,920 | 8,589,934,592 |
| AS24806 | INTERNET-CZ - INTERNET CZ, a.s., CZ | 45,824 | 4,294,967,296 |
| AS24971 | MASTER-AS - Master Internet s.r.o., CZ | 58,880 | 90,261,618,688 |
| AS25093 | CSAS-CZ - Ceska sporitelna a.s., CZ | 512 | 0 |
| AS25192 | CZNIC-AS - CZ.NIC, z.s.p.o., CZ | 6,400 | 4,295,426,048 |
| AS25234 | GLOBE-AS - ACTIVE 24, s.r.o., CZ | 7,680 | 8,590,000,128 |
| AS25238 | MONETA-CZ - MONETA Money Bank, a.s., CZ | 1,024 | 65,536 |
| AS25248 | BlueTone-AS - RADIOKOMUNIKACE a.s., CZ | 106,752 | 4,294,967,296 |
| AS25321 | G4S-NET - Brink's Cash Solutions (CZ), a.s., CZ | 512 | 0 |
| AS25424 | INEXT-CZ - InterneXt 2000, s.r.o., CZ | 33,792 | 68,719,476,736 |
| AS25512 | CDT-AS - CD-Telematika a.s., CZ | 118,784 | 4,294,967,296 |
| AS28725 | CETIN-AS - CETIN a.s., CZ | 133,888 | 38,654,705,664 |
| AS28851 | FORTECH-CZ - Nordic Telecom Regional s.r.o., CZ | 58,368 | 34,359,738,368 |
| AS28892 | CUZK-NET - Cesky urad zememericky a katastralni, CZ | 256 | 65,536 |
| AS28905 | BECOLINK-AS - BECO Link,spol.s.r.o., CZ | 6,144 | 0 |
| AS28972 | MSOFT-AS - M-SOFT, spol. s r.o., CZ | 13,312 | 68,719,476,736 |
| AS29086 | GITY-AS - GiTy, a.s., CZ | 4,096 | 4,294,967,296 |
| AS29134 | IGNUM-AS - Webglobe, s.r.o., CZ | 22,016 | 43,218,108,416 |
| AS29208 | QUANTCOM-AS - Quantcom, a.s., CZ | 254,464 | 12,884,901,888 |
| AS29321 | CentroNetAS - Nej.cz s.r.o., CZ | 15,360 | 4,294,967,296 |
| AS29504 | LBCFREE - Freenet Liberec, z.s., CZ | 1,024 | 34,359,738,368 |
| AS29583 | UNIENT-AS - Spinoco Czech Republic, a.s., CZ | 6,400 | 0 |
| AS30738 | NETART-AS - NetArt Group s.r.o., CZ | 256 | 2,147,483,648 |
| AS30764 | PODA-AS - PODA a.s., CZ | 222,208 | 8,589,934,592 |
| AS31246 | NETBOX-AS - Nej.cz s.r.o., CZ | 66,560 | 47,244,640,256 |
| AS31349 | a-net - a-net Liberec s.r.o., CZ | 5,120 | 34,359,738,368 |
| AS31461 | MORAVIA-IT-AS - Moravia IT s.r.o., CZ | 2,048 | 0 |
| AS33883 | TRIONET-CZ-AS - TRIOPTIMUM s.r.o., CZ | 7,168 | 34,359,738,368 |
| AS33943 | CBEZDRAT-AS - Cesky Bezdrat, s.r.o., CZ | 8,192 | 34,359,738,368 |
| AS34040 | CZTTNET-AS - TTNET s.r.o., CZ | 13,312 | 4,294,967,296 |
| AS34049 | WOSACZ-AS - H-data, spol. s r.o., CZ | 2,048 | 34,359,738,368 |
| AS34080 | MIRAMO-AS - MIRAMO spol. s.r.o., CZ | 11,264 | 4,294,967,296 |
| AS34093 | PLUSLINE-AS - Nordic Telecom Regional s.r.o., CZ | 28,672 | 4,294,967,296 |
| AS34222 | ZONER-AS - ZONER a.s., CZ | 6,144 | 4,294,967,296 |
| AS34293 | ASJSTEL - J.S.tel s.r.o., CZ | 256 | 0 |
| AS34315 | MAXNET-AS - Quantcom, a.s., CZ | 12,288 | 4,294,967,296 |
| AS34475 | Agrostroj - Agrostroj Pelhrimov, a.s., CZ | 1,024 | 0 |
| AS34487 | southpraguenet - SouthPrague.Net, z.s., CZ | 256 | 34,359,738,368 |
| AS34596 | HVfree - HVfree.net servis. s.r.o., CZ | 512 | 34,359,738,368 |
| AS34819 | h17 - H17 Networks, s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS34911 | ASELDATA - ELDATA prazska s.r.o., CZ | 3,584 | 0 |
| AS34955 | ASVICENIK - Martin Vicenik, CZ | 3,072 | 0 |
| AS35046 | OMEGAPLUS-AS - OMEGA plus Chrudim s.r.o., CZ | 7,168 | 4,294,967,296 |
| AS35096 | ALEFNULA - Alef Nula a.s., CZ | 1,024 | 65,536 |
| AS35214 | OXID-AS - Nordic Telecom Regional s.r.o., CZ | 10,240 | 0 |
| AS35236 | AS35236 - 2 connect a.s., CZ | 10,496 | 55,834,574,848 |
| AS35361 | GREPNET - GREPA Networks s.r.o., CZ | 10,240 | 4,294,967,296 |
| AS35592 | COOLHOUSING-AS - Coolhousing s.r.o., CZ | 12,544 | 4,294,967,296 |
| AS35613 | NETDATACOMM - NetDataComm, s.r.o., CZ | 8,192 | 4,294,967,296 |
| AS38952 | MAFRA-CZ-AS - MAFRA, a.s., CZ | 2,048 | 0 |
| AS39050 | NETSERVICE-AS - NET service solution, s.r.o., CZ | 256 | 34,359,738,368 |
| AS39235 | DAT-AS - Nordic Telecom Regional s.r.o., CZ | 7,168 | 4,294,967,296 |
| AS39392 | SuperNetwork - SH.cz s.r.o., CZ | 31,744 | 73,014,509,568 |
| AS39453 | UZIS-AS - Ustav zdravotnickych informaci a statistiky Ceske republiky, CZ | 256 | 0 |
| AS39736 | ICTSUPPORT - ICT Support, s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS39761 | ABAK - ABAK, Co.Ltd., CZ | 10,240 | 38,654,705,664 |
| AS39790 | WEB4U - Web4U s.r.o., CZ | 5,120 | 4,294,967,296 |
| AS39791 | TPS-AS - Telco Pro Services, a. s., CZ | 18,432 | 4,294,967,296 |
| AS39817 | OVANET - OvaNet, a.s., CZ | 6,400 | 4,294,967,296 |
| AS39904 | MERIT-AS - MERIT GROUP a.s, CZ | 4,096 | 4,294,967,296 |
| AS39906 | COPROSYS - CoProSys a.s., CZ | 37,376 | 4,295,032,832 |
| AS40964 | ASTELNET - ASTELNET s.r.o., CZ | 512 | 0 |
| AS41030 | ASNOVOTNYCZ - Jaroslav Novotny, CZ | 1,792 | 0 |
| AS41046 | NEJTV-AS - Nej.cz s.r.o., CZ | 32,768 | 34,359,803,904 |
| AS41088 | CZNSYS - "N_SYS s.r.o.", CZ | 9,216 | 4,295,032,832 |
| AS41359 | TELEFONZENTRALE-AS - Telefonzentrale s.r.o., CZ | 256 | 0 |
| AS41453 | TRESTEL-CZ-ASN - SITEL spol. s r.o., CZ | 5,120 | 38,654,705,664 |
| AS41670 | HKFREE-AS - hkfree.org z.s., CZ | 5,120 | 34,359,738,368 |
| AS41779 | LAJSINET - LajsiNET s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS42000 | KAORA - Futruy s.r.o., CZ | 7,680 | 34,359,738,368 |
| AS42189 | EUROSIGNAL-AS - Druzstvo EUROSIGNAL, CZ | 7,168 | 34,359,738,368 |
| AS42306 | EDERA_Group - Edera Group a.s., CZ | 20,480 | 103,079,215,104 |
| AS42422 | SECURITYNET-AS - SecurityNet.cz s.r.o., CZ | 2,816 | 4,295,032,832 |
| AS42726 | BUSINESSCOM - BusinessCom CZ spol. s r.o., CZ | 1,536 | 0 |
| AS42908 | NordicTelecom-AS - Nordic Telecom Regional s.r.o., CZ | 68,608 | 85,899,411,456 |
| AS43037 | SEZNAM-CZ - Seznam.cz, a.s., CZ | 3,072 | 4,294,967,296 |
| AS43070 | JAW-AS - JAW.cz s.r.o., CZ | 9,728 | 12,884,901,888 |
| AS43413 | ASNEW - NEW TELEKOM, spol. s r.o., CZ | 6,144 | 34,359,738,368 |
| AS43500 | WBD-AS - HBO Europe s.r.o., CZ | 512 | 131,072 |
| AS43507 | RETE-AS - RETE internet, s.r.o., CZ | 8,192 | 0 |
| AS43541 | VSHOSTING - VSHosting s.r.o., CZ | 20,224 | 47,244,705,792 |
| AS43542 | OptoNet-AS - OptoNet Communication, spol. s.r.o., CZ | 9,216 | 4,294,967,296 |
| AS43614 | ECONOMIA-CZ - Economia a.s., CZ | 3,072 | 4,294,967,296 |
| AS43708 | METRONET - METRONET s.r.o., CZ | 24,064 | 4,294,967,296 |
| AS43709 | SILESNET - SilesNet s.r.o., CZ | 8,192 | 4,294,967,296 |
| AS43757 | ICZAS-CZ - ICZ a.s., CZ | 2,304 | 65,536 |
| AS43866 | ALTRON - Altron a.s., CZ | 512 | 0 |
| AS44002 | SYS-DATACOM - Sys-DataCom s.r.o., CZ | 3,072 | 4,294,967,296 |
| AS44065 | NETAIR-AS - NETAIR, s.r.o., CZ | 6,144 | 34,359,738,368 |
| AS44070 | MCnet-AS - Nej.cz s.r.o., CZ | 4,096 | 34,359,738,368 |
| AS44104 | LCJ-AS - LCJ Invest, a.s., CZ | 256 | 0 |
| AS44424 | AS44424 - Internet Mall, a.s., CZ | 2,048 | 4,294,967,296 |
| AS44430 | MaRcom-Eko-AS - MaRcom-Eko s.r.o., CZ | 2,048 | 0 |
| AS44489 | Starnet - STARNET, s.r.o., CZ | 54,016 | 107,374,182,400 |
| AS44500 | vlasimnet - Vlasimnet s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS44546 | ALFATELECOM - ALFA TELECOM s.r.o., CZ | 526,848 | 0 |
| AS44712 | eHAMnet-AS - eHAMnet, s.r.o., CZ | 2,048 | 34,359,738,368 |
| AS44770 | SAVVY-AS - Savvy s.r.o., CZ | 1,024 | 65,536 |
| AS44984 | Fortion - Fortion Networks, s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS46553 | RIPE-46553 - RIPE Network Coordination Centre, CZ | 0 | 1,114,112 |
| AS47110 | CLOUD4COM-AS - AUTOCONT a.s., CZ | 4,608 | 4,294,967,296 |
| AS47114 | ISPgroup - SychrovNET s.r.o, CZ | 6,144 | 4,294,967,296 |
| AS47131 | PH - PH, spol. s r. o., CZ | 2,048 | 0 |
| AS47232 | ISPAlliance - ISP Alliance a.s., CZ | 22,272 | 137,438,953,472 |
| AS47269 | HLUCIN-NET-AS - Core4Net, s.r.o., CZ | 4,096 | 34,359,738,368 |
| AS47317 | WEB4CE - Web4ce, s.r.o., CZ | 3,072 | 34,359,738,368 |
| AS47493 | WMS-AS - WMS s.r.o., CZ | 8,192 | 4,294,967,296 |
| AS47681 | RIOMEDIA - Nej.cz s.r.o., CZ | 1,024 | 0 |
| AS47727 | WARNETCZ-AS - Warnet.cz s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS47749 | ORIFLAME-AS - ORIFLAME SOFTWARE s.r.o., CZ | 1,024 | 131,072 |
| AS47767 | RCO-AS - Regionalni centrum Olomouc s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS47834 | SOFTEXNCP-AS - SOFTEX NCP, s.r.o., CZ | 11,264 | 34,359,738,368 |
| AS47868 | SUPRO-AS - SUPRO, spol. s r.o., CZ | 4,096 | 4,294,967,296 |
| AS47949 | GSNETCZ - gsnet.cz s.r.o., CZ | 2,048 | 0 |
| AS48091 | ROWANet-AS - Kraj Vysocina, CZ | 1,024 | 34,359,803,904 |
| AS48131 | IXOXI - IXOXI s.r.o., CZ | 512 | 8,589,934,592 |
| AS48298 | GOVCZ - MINISTERSTVO VNITRA CR, CZ | 3,072 | 4,294,967,296 |
| AS48364 | ACVYSKOV-AS - Radim Pytela trading as AC Vyskov, CZ | 3,072 | 4,294,967,296 |
| AS48405 | CGI-CZ-AS1 - CGI IT Czech Republic s.r.o., CZ | 256 | 0 |
| AS48417 | ITS-CZ - ITS akciova spolecnost, CZ | 4,096 | 4,294,967,296 |
| AS48451 | PRE-AS - Prazska energetika, a.s., CZ | 2,048 | 4,294,967,296 |
| AS48474 | FOFRNET-AS - Nordic Telecom Regional s.r.o., CZ | 12,288 | 0 |
| AS48574 | ASN-CZ-PLANET-A-48574 - T-Mobile Czech Republic a.s., CZ | 9,216 | 0 |
| AS48602 | CONNECTPLUS - Connect plus s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS48661 | AIRWAYNET - AIRWAYNET, a.s., CZ | 5,120 | 4,294,967,296 |
| AS48926 | PE3NY-AS - Pe3ny Net s.r.o., CZ | 7,168 | 4,294,967,296 |
| AS48960 | MORAVANET - AQUA,a.s., CZ | 2,304 | 4,294,967,296 |
| AS49013 | Fusion_Media - Fusion Media, s.r.o., CZ | 1,280 | 0 |
| AS49025 | PROZETA-NET - PRO-ZETA a.s., CZ | 8,192 | 4,563,402,752 |
| AS49095 | P12com - PRAHA12.com s.r.o., CZ | 1,024 | 68,719,476,736 |
| AS49101 | KTCT-ASN - KABELOVA TELEVIZE CZ s.r.o., CZ | 16,384 | 8,589,934,592 |
| AS49121 | INFTELE-AS - Infinity Telecom, s.r.o., CZ | 5,376 | 196,608 |
| AS49142 | HBO - HBO Europe s.r.o., CZ | 512 | 0 |
| AS49244 | SCANCOM - Scancom s.r.o., CZ | 256 | 34,359,738,368 |
| AS49262 | ATCCZ1 - Ataccama Software, s.r.o., CZ | 256 | 34,359,738,368 |
| AS49573 | ASJIMMY - JimmyNet s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS49580 | MONETPLUS-AS - Monet +, a.s., CZ | 512 | 0 |
| AS49767 | INTERNETPB-AS - Nej.cz s.r.o., CZ | 5,120 | 4,294,967,296 |
| AS49890 | ADA-NET-AS - ABLE agency, s.r.o., CZ | 4,096 | 34,359,738,368 |
| AS49985 | IP4ISP - IP4ISP z.s.p.o, CZ | 17,408 | 4,294,967,296 |
| AS50067 | cesal - CESAL s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS50097 | IPVOIP-AS - IPVOIP s.r.o., CZ | 256 | 0 |
| AS50113 | SuperServersDatacenter - NTX Technologies s.r.o., CZ | 6,656 | 42,949,804,032 |
| AS50163 | altnet-skvelynet - Altnet s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS50301 | ASN-BRAZDIMNET - BrazdimNET s.r.o., CZ | 2,304 | 0 |
| AS50348 | KVADOS - KVADOS, a.s., CZ | 2,048 | 4,294,967,296 |
| AS50398 | FASTCOMMUNICATIONS - Fast Communication, s.r.o., CZ | 1,536 | 65,536 |
| AS50415 | Ahosting - Ahosting a.s., CZ | 1,024 | 34,359,738,368 |
| AS50695 | VLP-AS - VLTAVA LABE MEDIA a.s., CZ | 512 | 65,536 |
| AS50698 | TETA - TETA s.r.o., CZ | 11,264 | 34,359,738,368 |
| AS50784 | intraweb - Intraweb servis s.r.o., CZ | 1,024 | 0 |
| AS50825 | UVT - UVT Internet s.r.o., CZ | 7,168 | 34,359,738,368 |
| AS50833 | FIBERTEL-AS - FIBER TELECOM s.r.o., CZ | 1,024 | 131,072 |
| AS50971 | JHCOMP-AS - JHComp s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS50975 | AVX_AS - KYOCERA AVX Components s.r.o., CZ | 2,048 | 0 |
| AS50980 | net3 - E3.cz, sro, CZ | 1,024 | 0 |
| AS51025 | CONNECT-TST-AS - VSHosting s.r.o., CZ | 256 | 0 |
| AS51134 | INTACTO-AS - Development 777 s.r.o., CZ | 1,792 | 34,359,803,904 |
| AS51210 | KRAXNET-AS - KRAXNET s.r.o., CZ | 2,048 | 65,536 |
| AS51248 | HOST-TELECOM - Host-Telecom.com s.r.o., CZ | 11,520 | 262,144 |
| AS51331 | ModernTV - SychrovNET s.r.o, CZ | 1,536 | 50,331,648 |
| AS51382 | COMANET-NETWORK - Ing. Leos Janouch, CZ | 1,024 | 0 |
| AS51400 | ASSPOJENET - SPOJE.NET s.r.o., CZ | 2,048 | 65,536 |
| AS51420 | CYRILEK-AS - cyrilek.net .z.s., CZ | 8,704 | 0 |
| AS51424 | ASAGNET - Jiri Sperl, CZ | 1,792 | 0 |
| AS51449 | KTUO-AS - Kabelova televize Usti nad Orlici, spol. s r. o., CZ | 1,024 | 4,294,967,296 |
| AS51463 | ASFAJNCOMCZ - FAJNCOM s.r.o., CZ | 256 | 0 |
| AS51521 | ASKMNET - Resident Control Telco s.r.o., CZ | 512 | 0 |
| AS51524 | ASNETDELUXE - Ales Tesacek, CZ | 2,048 | 0 |
| AS51586 | SERVERZONECZ - ServerZone s.r.o., CZ | 1,280 | 8,589,934,592 |
| AS51661 | ALLSTARNET - Allstar Net s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS51727 | SKODAPOWER-AS - SKODA POWER s.r.o., CZ | 512 | 0 |
| AS51744 | ASJABLONKA - Non-profit organization Jablonka.cz, CZ | 1,024 | 65,536 |
| AS51800 | FIBERNET-ASN - FIBER Network s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS51968 | NEOS-AS - NEOS v.o.s., CZ | 4,096 | 4,294,967,296 |
| AS52029 | ASNOVOSEDLY - Palanet s.r.o., CZ | 2,048 | 0 |
| AS52058 | petrkovice_net - za200.cz s.r.o., CZ | 2,560 | 0 |
| AS52084 | ATLELEKTROCZ - ATL Obchodni s.r.o., CZ | 2,048 | 0 |
| AS52092 | ALFSERVIS-AS - Alf servis, s.r.o., CZ | 4,608 | 65,536 |
| AS52115 | JARONET-AS - JaroNet - services s.r.o., CZ | 4,096 | 34,359,738,368 |
| AS52130 | ARTCOMPANYCZ - LiveSport s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS52154 | ASMJANIK - mjanik.net s.r.o., CZ | 2,048 | 0 |
| AS52176 | TTC-CZ - TTC TELEKOMUNIKACE s.r.o., CZ | 1,536 | 4,294,967,296 |
| AS54444 | RIPE-54444 - RIPE Network Coordination Centre, CZ | 0 | 3,211,264 |
| AS56344 | ASVIRIDIUM - Viridium.cz s.r.o., CZ | 1,024 | 65,536 |
| AS56353 | FIRSTLINE-AS - First Line Software s.r.o., CZ | 1,024 | 0 |
| AS56360 | MSTR-AS - TRINITY CZECH REPUBLIC, s.r.o., CZ | 4,096 | 0 |
| AS56427 | ASHRADIL - Michal Hradil, CZ | 2,048 | 0 |
| AS56450 | ALBERON_AS - Alberon Letohrad s.r.o, CZ | 4,096 | 34,359,738,368 |
| AS56456 | C2NET - C2NET s.r.o., CZ | 4,096 | 34,359,738,368 |
| AS56566 | SATT-AS - SATT a.s., CZ | 8,192 | 4,294,967,296 |
| AS56624 | ASRTYNENET - Rtyne.net s.r.o., CZ | 3,072 | 0 |
| AS56717 | RESAL-AS - OG Soft s.r.o., CZ | 256 | 65,536 |
| AS56821 | knvnet1-as - KnVnet services s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS56827 | ASMIRNETCZ - mirnet s.r.o., CZ | 1,024 | 0 |
| AS56891 | ASCZRB - Narodni rozvojova banka, a.s., CZ | 256 | 0 |
| AS56973 | VITSOL - VITKOVICE IT SOLUTIONS a.s., CZ | 3,072 | 0 |
| AS57007 | ASNITEX - NITEX ISP s.r.o., CZ | 1,024 | 65,536 |
| AS57069 | ASDCC - Dempsey and Clark s.r.o., CZ | 8,448 | 0 |
| AS57077 | AB-NET - AB-NET s.r.o., CZ | 3,072 | 4,294,967,296 |
| AS57081 | SCARFBOT - Scarfbot Technologies, s.r.o., CZ | 1,024 | 34,359,738,368 |
| AS57188 | RNET-AS - ORKA systems, s.r.o., CZ | 4,096 | 4,294,967,296 |
| AS57279 | SAURONNET - Sauron CZ s.r.o., CZ | 4,096 | 4,294,967,296 |
| AS57287 | OTAVANET-AS - OtavaNet s.r.o., CZ | 4,096 | 65,536 |
| AS57288 | ASSTAMPI - StaMPi, spol. s r.o., CZ | 2,048 | 65,536 |
| AS57294 | Internet_Expert_CZ - Internet Expert s.r.o., CZ | 4,096 | 65,536 |
| AS57472 | JRNET - JR-NET, s.r.o., CZ | 768 | 4,294,967,296 |
| AS57496 | ASNETKOMUNIKACE - AIRESS CESKO s.r.o., CZ | 4,096 | 65,536 |
| AS57560 | ASXLNET - XLNET s.r.o., CZ | 1,024 | 65,536 |
| AS57564 | SUNTEL-BAJA-NET - Nordic Telecom Regional s.r.o., CZ | 8,192 | 268,435,456 |
| AS57707 | GREENDATA - Greendata s.r.o., CZ | 3,584 | 65,536 |
| AS57728 | HELIOSMB-AS - Telco Infrastructure, s.r.o., CZ | 15,360 | 12,884,901,888 |
| AS57823 | ASKKNET - INERCOM, s.r.o., CZ | 2,048 | 65,536 |
| AS57825 | MoravanyNET-AS - MoravanyNET s.r.o., CZ | 1,280 | 4,294,967,296 |
| AS57904 | ASVEVYNET - Vevynet s.r.o., CZ | 1,024 | 0 |
| AS58220 | PEGASNET - Tomas Budai, CZ | 1,024 | 4,294,967,296 |
| AS58239 | ASHANSPAULCITY - hanspaul-city.net s.r.o., CZ | 1,536 | 17,179,869,184 |
| AS59479 | ASGEMNET - GEMNET s.r.o., CZ | 6,144 | 0 |
| AS59664 | ASOPTON - Opton s.r.o., CZ | 1,024 | 0 |
| AS59747 | NIX-DR - NIX.CZ z.s.p.o., CZ | 0 | 65,536 |
| AS59871 | HEUREKA_GROUP - Heureka Group a.s., CZ | 1,024 | 327,680 |
| AS59925 | GIGASERVER - Seonet Multimedia s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS59959 | SFERIA - SferiaNET.cz s.r.o., CZ | 2,048 | 34,359,738,368 |
| AS59970 | AMIGONET - AmigoNet s.r.o., CZ | 3,072 | 68,719,476,736 |
| AS59984 | KLFREE-NETWORKS - KLFREE NETWORKS, s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS60086 | VALVERA - Valvera s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS60218 | ASIT8 - IT8 - Informacni technologie s.r.o., CZ | 256 | 65,536 |
| AS60266 | EMBEDIT-AS - Home Credit International a.s., CZ | 512 | 4,294,967,296 |
| AS60275 | AS_RVTECH - RVTech s.r.o., CZ | 0 | 65,536 |
| AS60529 | PRASLAVICENET - Miroslav Klement, CZ | 2,048 | 0 |
| AS60584 | PRIME-AS - Prime Studio s.r.o., CZ | 256 | 34,359,738,368 |
| AS60592 | GRANSY - Gransy s.r.o., CZ | 5,376 | 12,884,901,888 |
| AS60724 | SICUROCZ - Sicuro Services s. r. o., CZ | 256 | 0 |
| AS61045 | cz-antiddos - antiddos s.r.o., CZ | 256 | 0 |
| AS61110 | SITMP - Sprava informacnich technologii mesta Plzne, p.o., CZ | 1,024 | 34,359,738,368 |
| AS61296 | TechCom-AS - TechCom s.r.o., CZ | 17,408 | 4,294,967,296 |
| AS61425 | MLADAFRONTA - AdminIT, s. r. o., CZ | 1,024 | 0 |
| AS61981 | MACH3NET - Mach3net s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS62011 | ASUNHFREE - UNHfree.net z.s., CZ | 2,048 | 0 |
| AS62083 | FIO-BANKA-AS - Fio banka, a.s., CZ | 512 | 65,536 |
| AS62099 | JMNET - JM-Net, z.s., CZ | 4,096 | 34,359,738,368 |
| AS62102 | ISE-AS - Prazska plynarenska, a.s., CZ | 1,024 | 4,294,967,296 |
| AS62159 | ASHAPPY - Happy Technik s.r.o., CZ | 1,280 | 0 |
| AS62178 | Master_IT_Technologies - MASTER IT Technologies, a.s., CZ | 3,072 | 1,073,741,824 |
| AS62298 | CSC - Computer Systems Consulting s.r.o., CZ | 256 | 34,359,738,368 |
| AS62405 | Brouzdal - Brouzdal, s.r.o., CZ | 1,024 | 4,294,967,296 |
| AS63113 | GLOBECORP-NETWORKS - Globecorp Networks, CZ | 3,072 | 0 |
| AS196653 | ASBESTNETCZ - BEST-NET s.r.o., CZ | 1,536 | 65,536 |
| AS196684 | VITALATIV-CZ-AS - VITALATIV, s.r.o., CZ | 2,048 | 0 |
| AS196735 | AS-JONCZ - JON.CZ s.r.o., CZ | 17,408 | 4,294,967,296 |
| AS196762 | ASALKOM - ALKOM Security, a.s., CZ | 256 | 0 |
| AS196815 | LANSERVIS-AS - LAN servis s.r.o., CZ | 2,048 | 0 |
| AS196822 | SELECTSYSTEM-AS - SELECT SYSTEM, s.r.o., CZ | 16,384 | 4,294,967,296 |
| AS196843 | KHNET - KHnet.info, z.s., CZ | 5,120 | 4,294,967,296 |
| AS196845 | OMEGATECH-AS - Nordic Telecom Regional s.r.o., CZ | 11,264 | 4,294,967,296 |
| AS196849 | ASBARTYSOVA - Marcela Byrtusova, CZ | 256 | 0 |
| AS196861 | DIGIACT-AS - DIGITAL ACTION s.r.o., CZ | 3,072 | 4,294,967,296 |
| AS196873 | NETLANCERS-AS - Netlancers s.r.o., CZ | 2,048 | 0 |
| AS196916 | BUSINESSCOM-AS - BusinessCom CZ spol. s r.o., CZ | 1,024 | 0 |
| AS196943 | ASVISSADO - Vissado s.r.o., CZ | 256 | 65,536 |
| AS196952 | ASBEZVANET - BEZVANET s.r.o., CZ | 1,024 | 65,536 |
| AS196978 | ASTUMA - Nordic Telecom Regional s.r.o., CZ | 1,024 | 65,536 |
| AS197013 | SPRINTEL-SRO - Sprintel s.r.o., CZ | 12,288 | 4,294,967,296 |
| AS197019 | WEDOS - WEDOS Internet, a.s., CZ | 11,264 | 4,294,967,296 |
| AS197029 | LAM-AS - LAM plus s.r.o., CZ | 4,096 | 8,589,934,592 |
| AS197046 | AS_FIXNET - FIXnet s.r.o., CZ | 3,072 | 4,294,967,296 |
| AS197083 | K2ATMITEC - K2 atmitec s.r.o., CZ | 2,048 | 0 |
| AS197197 | M-NET - M.NET STUDENKA s. r. o., CZ | 16,384 | 4,294,967,296 |
| AS197206 | EU1-BUSINESSCOM - BusinessCom CZ spol. s r.o., CZ | 2,560 | 4,294,967,296 |
| AS197277 | SUKL_AS - State Institute for Drug Control, CZ | 2,048 | 4,294,967,296 |
| AS197296 | UNITED_NETWORKS_SE - United Networks SE, CZ | 6,656 | 34,359,738,368 |
| AS197307 | bnet-internet_cz - Core4Net, s.r.o., CZ | 5,376 | 4,294,967,296 |
| AS197353 | INGMS_CZ - NN Management Services, s.r.o., CZ | 512 | 0 |
| AS197393 | ASRUDOLFNET - Ladislav Rudolf, CZ | 2,048 | 34,359,738,368 |
| AS197412 | ASBESKYDNET - Trinecky Tlapnet s.r.o, CZ | 1,024 | 0 |
| AS197442 | ZENITSERVIS-AS - Nordic Telecom Regional s.r.o., CZ | 2,048 | 0 |
| AS197444 | COMFEEL - COMFEEL s.r.o., CZ | 1,024 | 34,359,803,904 |
| AS197451 | VUTBR-AS - Brno University of Technology, CZ | 67,072 | 55,834,836,992 |
| AS197542 | COMUNITED - Jan Saulich, CZ | 2,048 | 0 |
| AS197550 | ASINET4YOU - Internet4you.cz, spol. s r.o., CZ | 4,096 | 0 |
| AS197565 | ASDIGISERVICE - NHK Solutions s.r.o., CZ | 2,048 | 0 |
| AS197566 | ASOKNET - OK-NET s.r.o., CZ | 256 | 0 |
| AS197694 | MEPNET-AS - Municipal Office of the City Prague, CZ | 1,536 | 0 |
| AS197698 | DHT_Systems - D-H-T SYSTEMS s.r.o., CZ | 512 | 0 |
| AS197798 | NET-CONNECT - Net-Connect s.r.o., CZ | 9,216 | 34,359,738,368 |
| AS197846 | SAOCOMP-AS - Radovan Ochvat trading as SAO Computers, CZ | 4,096 | 0 |
| AS197875 | UNIPETROLRPA - UNIPETROL RPA, s.r.o., CZ | 256 | 0 |
| AS197879 | HELAPC - HelaPC s.r.o., CZ | 3,328 | 68,719,476,736 |
| AS197895 | ONYX-AS - ONYX engineering, spol. s r.o., CZ | 1,024 | 4,294,967,296 |
| AS197920 | SKODA-ICT - SKODA ICT s.r.o., CZ | 1,280 | 0 |
| AS198002 | TANET3-AS - Ceznet sro, CZ | 8,192 | 4,294,967,296 |
| AS198031 | TRUSTICA-AS - Trustica s.r.o., CZ | 2,048 | 4,294,967,296 |
| AS198101 | K |