| 5.59.0.0 | 5.59.255.255 | 65536 | 04/06/12 | CoProSys a.s. |
| 5.102.48.0 | 5.102.63.255 | 4096 | 27/06/12 | Nordic Telecom Regional s.r.o. |
| 31.28.128.0 | 31.28.159.255 | 8192 | 28/02/11 | PODA a.s. |
| 31.30.0.0 | 31.30.255.255 | 65536 | 15/03/11 | Vodafone Czech Republic a.s. |
| 31.31.224.0 | 31.31.255.255 | 8192 | 21/03/11 | SATT a.s. |
| 31.47.96.0 | 31.47.111.255 | 4096 | 22/03/11 | FreeTel, s.r.o. |
| 31.132.16.0 | 31.132.31.255 | 4096 | 16/06/11 | |
| 31.148.0.0 | 31.148.255.255 | 65536 | 11/02/11 | ALFA TELECOM s.r.o. |
| 31.169.128.0 | 31.169.255.255 | 32768 | 29/03/11 | Vodafone Czech Republic a.s. |
| 31.192.64.0 | 31.192.95.255 | 8192 | 20/04/11 | Net-Connect s.r.o. |
| 31.222.0.0 | 31.222.15.255 | 4096 | 12/05/11 | Radovan Ochvat trading as SAO Computers |
| 37.44.16.0 | 37.44.31.255 | 4096 | 09/01/12 | Matrigo s.r.o. |
| 37.48.0.0 | 37.48.63.255 | 16384 | 23/01/12 | T-Mobile Czech Republic a.s. |
| 37.77.224.0 | 37.77.255.255 | 8192 | 03/02/12 | Wic-Net, s.r.o. |
| 37.188.128.0 | 37.188.255.255 | 32768 | 20/03/12 | O2 Czech Republic, a.s. |
| 37.221.240.0 | 37.221.255.255 | 4096 | 10/04/12 | ISP Alliance a.s. |
| 37.235.96.0 | 37.235.111.255 | 4096 | 17/04/12 | SH.cz s.r.o. |
| 46.8.16.0 | 46.8.31.255 | 4096 | 07/09/10 | NetArt Group s.r.o. |
| 46.8.32.0 | 46.8.63.255 | 8192 | 07/09/10 | NetArt Group s.r.o. |
| 46.8.64.0 | 46.8.95.255 | 8192 | 07/09/10 | NetArt Group s.r.o. |
| 46.8.112.0 | 46.8.127.255 | 4096 | 07/09/10 | NetArt LIR, k.s. |
| 46.8.128.0 | 46.8.159.255 | 8192 | 07/09/10 | NetArt Group s.r.o. |
| 46.8.160.0 | 46.8.175.255 | 4096 | 07/09/10 | NetArt Group s.r.o. |
| 46.8.208.0 | 46.8.223.255 | 4096 | 07/09/10 | NetArt Group s.r.o. |
| 46.8.224.0 | 46.8.255.255 | 8192 | 07/09/10 | NetArt Group s.r.o. |
| 46.13.0.0 | 46.13.255.255 | 65536 | 24/09/10 | T-Mobile Czech Republic a.s. |
| 46.23.48.0 | 46.23.63.255 | 4096 | 02/12/10 | United Networks SE |
| 46.23.128.0 | 46.23.143.255 | 4096 | 08/12/10 | NEOS v.o.s. |
| 46.33.96.0 | 46.33.127.255 | 8192 | 31/08/10 | INFOS Art, s.r.o. |
| 46.36.32.0 | 46.36.63.255 | 8192 | 25/10/10 | GTT a.s. |
| 46.39.160.0 | 46.39.191.255 | 8192 | 15/12/10 | Nej.cz s.r.o. |
| 46.47.128.0 | 46.47.191.255 | 16384 | 22/10/10 | PODA a.s. |
| 46.135.0.0 | 46.135.255.255 | 65536 | 11/11/10 | Vodafone Czech Republic a.s. |
| 46.149.112.0 | 46.149.127.255 | 4096 | 23/12/10 | |
| 46.167.192.0 | 46.167.255.255 | 16384 | 21/12/10 | Vodafone Czech Republic a.s. |
| 46.173.192.0 | 46.173.207.255 | 4096 | 26/01/11 | |
| 46.228.16.0 | 46.228.31.255 | 4096 | 03/02/11 | ORKA systems, s.r.o. |
| 46.229.112.0 | 46.229.127.255 | 4096 | 15/02/11 | Alberon Letohrad s.r.o |
| 46.234.96.0 | 46.234.127.255 | 8192 | 10/02/11 | SH.cz s.r.o. |
| 46.234.160.0 | 46.234.191.255 | 8192 | 10/02/11 | TRINITY CZECH REPUBLIC, s.r.o. |
| 46.252.224.0 | 46.252.239.255 | 4096 | 27/12/10 | JaroNet - services s.r.o. |
| 46.253.96.0 | 46.253.111.255 | 4096 | 07/01/11 | Edera Group a.s. |
| 62.4.112.0 | 62.4.127.255 | 4096 | 11/06/01 | Quantcom, a.s. |
| 62.24.64.0 | 62.24.95.255 | 8192 | 14/06/00 | Vodafone Czech Republic a.s. |
| 62.40.64.0 | 62.40.95.255 | 8192 | 14/06/00 | Verizon Czech s.r.o. |
| 62.44.0.0 | 62.44.31.255 | 8192 | 23/05/97 | Quantcom, a.s. |
| 62.76.224.0 | 62.76.239.255 | 4096 | 16/06/97 | Reliable Communications s.r.o. |
| 62.77.64.0 | 62.77.127.255 | 16384 | 05/07/01 | T-Mobile Czech Republic a.s. |
| 62.84.128.0 | 62.84.159.255 | 8192 | 23/06/00 | T-Mobile Czech Republic a.s. |
| 62.109.128.0 | 62.109.159.255 | 8192 | 03/07/08 | Webglobe, s.r.o. |
| 62.129.32.0 | 62.129.63.255 | 8192 | 24/01/03 | PODA a.s. |
| 62.141.0.0 | 62.141.31.255 | 8192 | 12/07/00 | T-Mobile Czech Republic a.s. |
| 62.168.0.0 | 62.168.63.255 | 16384 | 07/05/97 | T-Mobile Czech Republic a.s. |
| 62.177.64.0 | 62.177.127.255 | 16384 | 15/10/01 | Quantcom, a.s. |
| 62.201.16.0 | 62.201.31.255 | 4096 | 08/02/10 | a-net Liberec s.r.o. |
| 62.204.224.0 | 62.204.255.255 | 8192 | 09/05/03 | TTNET s.r.o. |
| 62.209.192.0 | 62.209.255.255 | 16384 | 30/01/03 | T-Mobile Czech Republic a.s. |
| 62.240.160.0 | 62.240.191.255 | 8192 | 26/05/03 | Vodafone Czech Republic a.s. |
| 62.245.64.0 | 62.245.127.255 | 16384 | 03/01/02 | Vodafone Czech Republic a.s. |
| 69.94.64.0 | 69.94.79.255 | 4096 | 19/11/03 | AVAST Software s.r.o. |
| 77.48.0.0 | 77.48.255.255 | 65536 | 23/11/06 | Vodafone Czech Republic a.s. |
| 77.78.96.0 | 77.78.111.255 | 4096 | 27/02/07 | CASABLANCA INT a.s. |
| 77.92.192.0 | 77.92.223.255 | 8192 | 09/05/07 | InterneXt 2000, s.r.o. |
| 77.93.192.0 | 77.93.223.255 | 8192 | 18/05/07 | Master Internet s.r.o. |
| 77.104.192.0 | 77.104.255.255 | 16384 | 28/11/06 | CoProSys a.s. |
| 77.236.192.0 | 77.236.223.255 | 8192 | 30/01/07 | Edera Group a.s. |
| 77.237.128.0 | 77.237.159.255 | 8192 | 02/02/07 | WMS s.r.o. |
| 77.240.96.0 | 77.240.111.255 | 4096 | 10/01/07 | Druzstvo EUROSIGNAL |
| 77.240.176.0 | 77.240.191.255 | 4096 | 18/01/07 | FASTER CZ spol. s r.o. |
| 77.242.80.0 | 77.242.95.255 | 4096 | 27/02/07 | Nej.cz s.r.o. |
| 78.44.0.0 | 78.45.255.255 | 131072 | 13/04/07 | Vodafone Czech Republic a.s. |
| 78.80.0.0 | 78.80.127.255 | 32768 | 22/03/07 | T-Mobile Czech Republic a.s. |
| 78.80.128.0 | 78.80.255.255 | 32768 | 22/03/07 | T-Mobile Czech Republic a.s. |
| 78.102.0.0 | 78.102.255.255 | 65536 | 04/06/07 | Vodafone Czech Republic a.s. |
| 78.108.96.0 | 78.108.111.255 | 4096 | 18/06/07 | FreeTel, s.r.o. |
| 78.110.208.0 | 78.110.223.255 | 4096 | 20/08/07 | METRONET s.r.o. |
| 78.111.112.0 | 78.111.127.255 | 4096 | 29/06/09 | ISP Alliance a.s. |
| 78.128.128.0 | 78.128.255.255 | 32768 | 10/04/07 | CESNET z.s.p.o. |
| 78.136.128.0 | 78.136.191.255 | 16384 | 09/05/07 | Nordic Telecom Regional s.r.o. |
| 78.156.32.0 | 78.156.63.255 | 8192 | 09/08/07 | RETE internet, s.r.o. |
| 78.156.128.0 | 78.156.159.255 | 8192 | 16/08/07 | OptoNet Communication, spol. s.r.o. |
| 78.157.128.0 | 78.157.159.255 | 8192 | 04/06/10 | PODA a.s. |
| 78.157.160.0 | 78.157.191.255 | 8192 | 30/08/07 | SilesNet s.r.o. |
| 79.110.32.0 | 79.110.47.255 | 4096 | 13/09/11 | |
| 79.127.128.0 | 79.127.191.255 | 16384 | 25/09/07 | Ipex Ltd. |
| 79.141.240.0 | 79.141.255.255 | 4096 | 26/10/07 | M-SOFT, spol. s r.o. |
| 79.142.144.0 | 79.142.159.255 | 4096 | 08/10/10 | Core4Net, s.r.o. |
| 80.65.176.0 | 80.65.191.255 | 4096 | 19/04/04 | Moravia IT s.r.o. |
| 80.74.32.0 | 80.74.47.255 | 4096 | 18/06/01 | CETIN a.s. |
| 80.78.144.0 | 80.78.159.255 | 4096 | 16/03/05 | Nej.cz s.r.o. |
| 80.79.16.0 | 80.79.31.255 | 4096 | 16/03/05 | Master Internet s.r.o. |
| 80.82.144.0 | 80.82.159.255 | 4096 | 11/04/05 | CoProSys a.s. |
| 80.83.64.0 | 80.83.79.255 | 4096 | 30/07/01 | K-net Technical International Group, s.r.o. |
| 80.87.176.0 | 80.87.191.255 | 4096 | 20/05/05 | Nordic Telecom Regional s.r.o. |
| 80.90.128.0 | 80.90.143.255 | 4096 | 07/10/08 | Nordic Telecom Regional s.r.o. |
| 80.92.240.0 | 80.92.255.255 | 4096 | 20/04/10 | LAM plus s.r.o. |
| 80.95.96.0 | 80.95.111.255 | 4096 | 05/10/01 | Vodafone Czech Republic a.s. |
| 80.95.112.0 | 80.95.127.255 | 4096 | 29/08/02 | Vodafone Czech Republic a.s. |
| 80.95.240.0 | 80.95.255.255 | 4096 | 12/08/05 | T-Mobile Czech Republic a.s. |
| 80.188.0.0 | 80.188.255.255 | 65536 | 13/06/02 | O2 Czech Republic, a.s. |
| 80.243.96.0 | 80.243.111.255 | 4096 | 27/05/09 | Nej.cz s.r.o. |
| 80.250.0.0 | 80.250.15.255 | 4096 | 29/11/01 | WIA spol. s.r.o. |
| 80.250.16.0 | 80.250.31.255 | 4096 | 27/06/05 | WIA spol. s.r.o. |
| 80.251.240.0 | 80.251.255.255 | 4096 | 21/11/05 | Nordic Telecom Regional s.r.o. |
| 81.2.192.0 | 81.2.255.255 | 16384 | 04/04/02 | INTERNET CZ, a.s. |
| 81.19.0.0 | 81.19.15.255 | 4096 | 22/01/02 | FASTER CZ spol. s r.o. |
| 81.19.32.0 | 81.19.47.255 | 4096 | 10/12/02 | CD-Telematika a.s. |
| 81.25.16.0 | 81.25.31.255 | 4096 | 27/02/06 | Cerberos s.r.o. |
| 81.27.192.0 | 81.27.207.255 | 4096 | 15/04/02 | Vodafone Czech Republic a.s. |
| 81.28.16.0 | 81.28.31.255 | 4096 | 16/03/06 | Verizon Czech s.r.o. |
| 81.30.224.0 | 81.30.255.255 | 8192 | 27/05/02 | ha-vel internet s.r.o. |
| 81.31.32.0 | 81.31.47.255 | 4096 | 28/05/02 | Master Internet s.r.o. |
| 81.90.160.0 | 81.90.175.255 | 4096 | 04/07/02 | O2 Czech Republic, a.s. |
| 81.90.240.0 | 81.90.255.255 | 4096 | 21/04/06 | ABAK, Co.Ltd. |
| 81.91.80.0 | 81.91.95.255 | 4096 | 25/04/06 | Web4U s.r.o. |
| 81.91.208.0 | 81.91.223.255 | 4096 | 27/04/06 | OvaNet, a.s. |
| 81.92.144.0 | 81.92.159.255 | 4096 | 03/05/06 | CoProSys a.s. |
| 81.95.96.0 | 81.95.111.255 | 4096 | 03/09/02 | ACTIVE 24, s.r.o. |
| 81.161.64.0 | 81.161.79.255 | 4096 | 16/07/12 | |
| 81.162.192.0 | 81.162.207.255 | 4096 | 07/12/11 | |
| 81.200.48.0 | 81.200.63.255 | 4096 | 01/06/06 | Nej.cz s.r.o. |
| 81.201.48.0 | 81.201.63.255 | 4096 | 20/06/06 | FreeTel, s.r.o. |
| 82.99.128.0 | 82.99.191.255 | 16384 | 12/12/03 | RADIOKOMUNIKACE a.s. |
| 82.100.0.0 | 82.100.63.255 | 16384 | 12/12/03 | Quantcom, a.s. |
| 82.113.32.0 | 82.113.63.255 | 8192 | 11/12/03 | Quantcom, a.s. |
| 82.114.192.0 | 82.114.223.255 | 8192 | 02/01/04 | Nej.cz s.r.o. |
| 82.117.128.0 | 82.117.159.255 | 8192 | 09/02/04 | CD-Telematika a.s. |
| 82.119.240.0 | 82.119.255.255 | 4096 | 18/02/04 | Quantcom, a.s. |
| 82.142.64.0 | 82.142.127.255 | 16384 | 05/09/03 | Vodafone Czech Republic a.s. |
| 82.144.128.0 | 82.144.159.255 | 8192 | 14/04/09 | KABELOVA TELEVIZE CZ s.r.o. |
| 82.150.160.0 | 82.150.191.255 | 8192 | 25/08/03 | Nej.cz s.r.o. |
| 82.202.0.0 | 82.202.63.255 | 16384 | 23/09/03 | InterneXt 2000, s.r.o. |
| 82.202.64.0 | 82.202.127.255 | 16384 | 23/09/03 | CD-Telematika a.s. |
| 82.209.0.0 | 82.209.63.255 | 16384 | 29/09/03 | PODA a.s. |
| 83.69.32.0 | 83.69.63.255 | 8192 | 25/05/04 | O2 Czech Republic, a.s. |
| 83.148.0.0 | 83.148.63.255 | 16384 | 24/02/04 | Quantcom, a.s. |
| 83.167.224.0 | 83.167.255.255 | 8192 | 21/08/08 | Master Internet s.r.o. |
| 83.208.0.0 | 83.208.255.255 | 65536 | 02/03/04 | O2 Czech Republic, a.s. |
| 83.240.0.0 | 83.240.127.255 | 32768 | 11/03/04 | Nej.cz s.r.o. |
| 84.16.96.0 | 84.16.127.255 | 8192 | 14/07/04 | PODA a.s. |
| 84.19.64.0 | 84.19.95.255 | 8192 | 19/08/04 | Cesky Bezdrat, s.r.o. |
| 84.21.96.0 | 84.21.127.255 | 8192 | 13/09/04 | PODA a.s. |
| 84.42.128.0 | 84.42.255.255 | 32768 | 14/09/04 | Vodafone Czech Republic a.s. |
| 84.242.64.0 | 84.242.127.255 | 16384 | 28/06/04 | Vodafone Czech Republic a.s. |
| 84.244.64.0 | 84.244.127.255 | 16384 | 21/07/04 | RADIOKOMUNIKACE a.s. |
| 85.13.64.0 | 85.13.127.255 | 16384 | 29/03/05 | CD-Telematika a.s. |
| 85.70.0.0 | 85.71.255.255 | 131072 | 02/11/04 | O2 Czech Republic, a.s. |
| 85.92.32.0 | 85.92.63.255 | 8192 | 02/12/04 | InterneXt 2000, s.r.o. |
| 85.93.96.0 | 85.93.127.255 | 8192 | 09/12/04 | Quantcom, a.s. |
| 85.93.160.0 | 85.93.191.255 | 8192 | 13/12/04 | Sprintel s.r.o. |
| 85.132.144.0 | 85.132.159.255 | 4096 | 07/12/04 | FASTER CZ spol. s r.o. |
| 85.132.160.0 | 85.132.191.255 | 8192 | 07/12/04 | Ipex Ltd. |
| 85.135.0.0 | 85.135.127.255 | 32768 | 16/12/04 | PODA a.s. |
| 85.160.0.0 | 85.161.255.255 | 131072 | 25/10/04 | O2 Czech Republic, a.s. |
| 85.162.0.0 | 85.163.255.255 | 131072 | 25/10/04 | CETIN a.s. |
| 85.184.16.0 | 85.184.31.255 | 4096 | 19/11/04 | CD-Telematika a.s. |
| 85.193.0.0 | 85.193.63.255 | 16384 | 16/12/04 | O2 Czech Republic, a.s. |
| 85.207.0.0 | 85.207.255.255 | 65536 | 17/01/05 | RADIOKOMUNIKACE a.s. |
| 85.239.64.0 | 85.239.95.255 | 8192 | 16/06/05 | ANECT a.s. |
| 86.49.0.0 | 86.49.255.255 | 65536 | 21/04/05 | Vodafone Czech Republic a.s. |
| 86.61.128.0 | 86.61.255.255 | 32768 | 20/05/05 | PODA a.s. |
| 86.63.192.0 | 86.63.223.255 | 8192 | 29/06/05 | Nej.cz s.r.o. |
| 87.249.144.0 | 87.249.159.255 | 4096 | 30/08/05 | TTNET s.r.o. |
| 88.81.64.0 | 88.81.95.255 | 8192 | 02/12/05 | Nordic Telecom Regional s.r.o. |
| 88.83.160.0 | 88.83.191.255 | 8192 | 09/01/06 | O2 Czech Republic, a.s. |
| 88.83.224.0 | 88.83.255.255 | 8192 | 11/01/06 | Nej.cz s.r.o. |
| 88.86.96.0 | 88.86.127.255 | 8192 | 14/02/06 | SH.cz s.r.o. |
| 88.100.0.0 | 88.103.255.255 | 262144 | 04/10/05 | O2 Czech Republic, a.s. |
| 88.146.0.0 | 88.146.127.255 | 32768 | 20/12/05 | Quantcom, a.s. |
| 88.146.128.0 | 88.146.255.255 | 32768 | 23/12/05 | Vodafone Czech Republic a.s. |
| 88.208.64.0 | 88.208.127.255 | 16384 | 28/10/05 | Quantcom, a.s. |
| 89.22.64.0 | 89.22.95.255 | 8192 | 11/07/11 | |
| 89.24.0.0 | 89.24.127.255 | 32768 | 11/05/06 | T-Mobile Czech Republic a.s. |
| 89.24.128.0 | 89.24.255.255 | 32768 | 04/05/07 | T-Mobile Czech Republic a.s. |
| 89.29.0.0 | 89.29.127.255 | 32768 | 19/07/06 | PODA a.s. |
| 89.102.0.0 | 89.103.255.255 | 131072 | 24/02/06 | Vodafone Czech Republic a.s. |
| 89.111.64.0 | 89.111.127.255 | 16384 | 25/04/06 | Telco Pro Services, a. s. |
| 89.176.0.0 | 89.177.255.255 | 131072 | 16/03/06 | Vodafone Czech Republic a.s. |
| 89.185.224.0 | 89.185.255.255 | 8192 | 12/04/06 | Master Internet s.r.o. |
| 89.187.128.0 | 89.187.159.255 | 8192 | 28/04/06 | Coolhousing s.r.o. |
| 89.187.160.0 | 89.187.191.255 | 8192 | 28/04/06 | DataCamp s.r.o. |
| 89.190.48.0 | 89.190.63.255 | 4096 | 06/06/06 | Nej.cz s.r.o. |
| 89.190.64.0 | 89.190.95.255 | 8192 | 06/06/06 | "N_SYS s.r.o." |
| 89.203.128.0 | 89.203.255.255 | 32768 | 27/04/06 | CD-Telematika a.s. |
| 89.221.208.0 | 89.221.223.255 | 4096 | 11/10/06 | WEDOS Internet, a.s. |
| 89.233.128.0 | 89.233.191.255 | 16384 | 10/05/06 | T-Mobile Czech Republic a.s. |
| 89.235.0.0 | 89.235.63.255 | 16384 | 30/05/06 | Quantcom, a.s. |
| 89.239.0.0 | 89.239.31.255 | 8192 | 09/06/06 | GREPA Networks s.r.o. |
| 89.248.240.0 | 89.248.255.255 | 4096 | 14/07/06 | hkfree.org z.s. |
| 89.250.240.0 | 89.250.255.255 | 4096 | 23/08/06 | SITEL spol. s r.o. |
| 90.176.32.0 | 90.176.63.255 | 8192 | 17/09/06 | O2 Czech Republic, a.s. |
| 90.176.64.0 | 90.176.127.255 | 16384 | 17/09/06 | O2 Czech Republic, a.s. |
| 90.176.128.0 | 90.176.255.255 | 32768 | 17/09/06 | O2 Czech Republic, a.s. |
| 90.177.0.0 | 90.177.255.255 | 65536 | 17/09/06 | O2 Czech Republic, a.s. |
| 90.178.0.0 | 90.179.255.255 | 131072 | 17/09/06 | O2 Czech Republic, a.s. |
| 90.180.0.0 | 90.183.255.255 | 262144 | 17/09/06 | O2 Czech Republic, a.s. |
| 91.106.240.0 | 91.106.255.255 | 4096 | 25/06/12 | PODA a.s. |
| 91.139.0.0 | 91.139.127.255 | 32768 | 22/05/07 | T-Mobile Czech Republic a.s. |
| 91.187.32.0 | 91.187.63.255 | 8192 | 16/11/06 | Nordic Telecom Regional s.r.o. |
| 92.38.0.0 | 92.38.127.255 | 32768 | 01/02/08 | ALFA TELECOM s.r.o. |
| 92.61.80.0 | 92.61.95.255 | 4096 | 18/12/07 | Nordic Telecom Regional s.r.o. |
| 92.62.224.0 | 92.62.239.255 | 4096 | 28/01/08 | STARNET, s.r.o. |
| 92.63.48.0 | 92.63.63.255 | 4096 | 31/01/08 | NEW TELEKOM, spol. s r.o. |
| 92.240.160.0 | 92.240.191.255 | 8192 | 23/11/07 | Nej.cz s.r.o. |
| 92.243.192.0 | 92.243.223.255 | 8192 | 30/01/08 | O2 Czech Republic, a.s. |
| 92.253.128.0 | 92.253.255.255 | 32768 | 03/12/07 | ALFA TELECOM s.r.o. |
| 93.89.96.0 | 93.89.111.255 | 4096 | 04/04/08 | SychrovNET s.r.o |
| 93.89.144.0 | 93.89.159.255 | 4096 | 09/04/08 | GRADACE, spol. s r.o. |
| 93.90.160.0 | 93.90.175.255 | 4096 | 23/04/08 | Vodafone Czech Republic a.s. |
| 93.91.48.0 | 93.91.63.255 | 4096 | 02/05/08 | inet4 s.r.o. |
| 93.91.144.0 | 93.91.159.255 | 4096 | 16/05/08 | ISP Alliance a.s. |
| 93.91.240.0 | 93.91.255.255 | 4096 | 21/05/08 | Core4Net, s.r.o. |
| 93.99.0.0 | 93.99.255.255 | 65536 | 25/02/08 | Vodafone Czech Republic a.s. |
| 93.153.0.0 | 93.153.127.255 | 32768 | 07/05/08 | T-Mobile Czech Republic a.s. |
| 93.170.0.0 | 93.171.255.255 | 131072 | 20/03/08 | ALFA TELECOM s.r.o. |
| 93.181.64.0 | 93.181.127.255 | 16384 | 28/04/08 | PODA a.s. |
| 93.185.0.0 | 93.185.15.255 | 4096 | 04/06/08 | C2NET s.r.o. |
| 93.185.48.0 | 93.185.63.255 | 4096 | 05/06/08 | ha-vel internet s.r.o. |
| 93.185.96.0 | 93.185.111.255 | 4096 | 06/06/08 | VSHosting s.r.o. |
| 94.74.192.0 | 94.74.255.255 | 16384 | 17/07/08 | Nej.cz s.r.o. |
| 94.112.0.0 | 94.113.255.255 | 131072 | 09/07/08 | Vodafone Czech Republic a.s. |
| 94.138.96.0 | 94.138.127.255 | 8192 | 22/09/08 | CoProSys a.s. |
| 94.229.80.0 | 94.229.95.255 | 4096 | 13/11/08 | MASTER IT Technologies, a.s. |
| 94.230.144.0 | 94.230.159.255 | 4096 | 24/12/08 | AIRWAYNET, a.s. |
| 94.241.64.0 | 94.241.127.255 | 16384 | 29/09/08 | Nordic Telecom Regional s.r.o. |
| 94.242.64.0 | 94.242.127.255 | 16384 | 17/10/08 | PODA a.s. |
| 95.46.0.0 | 95.47.255.255 | 131072 | 01/12/08 | ALFA TELECOM s.r.o. |
| 95.80.192.0 | 95.80.255.255 | 16384 | 26/11/08 | Quantcom, a.s. |
| 95.82.128.0 | 95.82.191.255 | 16384 | 11/12/08 | Nej.cz s.r.o. |
| 95.85.192.0 | 95.85.255.255 | 16384 | 31/12/08 | METRONET s.r.o. |
| 95.140.240.0 | 95.140.255.255 | 4096 | 05/10/09 | ABLE agency, s.r.o. |
| 95.143.128.0 | 95.143.143.255 | 4096 | 25/08/09 | Nej.cz s.r.o. |
| 95.168.192.0 | 95.168.223.255 | 8192 | 07/01/09 | SH.cz s.r.o. |
| 95.173.64.0 | 95.173.95.255 | 8192 | 05/03/09 | ha-vel internet s.r.o. |
| 95.173.208.0 | 95.173.223.255 | 4096 | 10/03/09 | PRO-ZETA a.s. |
| 95.182.64.0 | 95.182.127.255 | 16384 | 05/02/09 | NetArt Group s.r.o. |
| 109.72.0.0 | 109.72.15.255 | 4096 | 04/09/09 | Nej.cz s.r.o. |
| 109.73.208.0 | 109.73.223.255 | 4096 | 16/10/09 | KHnet.info, z.s. |
| 109.75.0.0 | 109.75.15.255 | 4096 | 13/11/09 | KYOCERA AVX Components s.r.o. |
| 109.75.144.0 | 109.75.159.255 | 4096 | 20/11/09 | T-Mobile Czech Republic a.s. |
| 109.80.0.0 | 109.81.255.255 | 131072 | 10/07/09 | O2 Czech Republic, a.s. |
| 109.105.32.0 | 109.105.63.255 | 8192 | 14/09/09 | Nej.cz s.r.o. |
| 109.107.192.0 | 109.107.223.255 | 8192 | 21/10/09 | Vodafone Czech Republic a.s. |
| 109.108.96.0 | 109.108.127.255 | 8192 | 27/10/09 | Nordic Telecom Regional s.r.o. |
| 109.164.0.0 | 109.164.127.255 | 32768 | 14/10/09 | SITKOM spol. s r.o. |
| 109.183.0.0 | 109.183.255.255 | 65536 | 29/09/09 | T-Mobile Czech Republic a.s. |
| 109.202.64.0 | 109.202.95.255 | 8192 | 15/02/10 | TETA s.r.o. |
| 109.224.64.0 | 109.224.127.255 | 16384 | 08/01/10 | M.NET STUDENKA s. r. o. |
| 109.231.128.0 | 109.231.191.255 | 16384 | 08/03/10 | TechCom s.r.o. |
| 109.238.32.0 | 109.238.47.255 | 4096 | 20/01/10 | ha-vel internet s.r.o. |
| 109.238.208.0 | 109.238.223.255 | 4096 | 28/01/10 | T-Mobile Czech Republic a.s. |
| 109.239.64.0 | 109.239.79.255 | 4096 | 03/02/10 | Nej.cz s.r.o. |
| 109.248.16.0 | 109.248.31.255 | 4096 | 27/11/09 | NetArt LIR, k.s. |
| 109.248.32.0 | 109.248.63.255 | 8192 | 27/11/09 | NetArt Group s.r.o. |
| 109.248.64.0 | 109.248.127.255 | 16384 | 27/11/09 | NetArt Group s.r.o. |
| 109.248.128.0 | 109.248.191.255 | 16384 | 27/11/09 | NetArt Group s.r.o. |
| 109.248.192.0 | 109.248.207.255 | 4096 | 27/11/09 | NetArt Group s.r.o. |
| 109.248.224.0 | 109.248.255.255 | 8192 | 27/11/09 | NetArt Group s.r.o. |
| 128.0.176.0 | 128.0.191.255 | 4096 | 14/09/12 | PODA a.s. |
| 137.98.0.0 | 137.98.255.255 | 65536 | 15/11/89 | |
| 141.170.128.0 | 141.170.191.255 | 16384 | 01/07/11 | Vodafone Czech Republic a.s. |
| 146.102.0.0 | 146.102.255.255 | 65536 | 05/02/91 | |
| 146.120.0.0 | 146.120.255.255 | 65536 | 12/07/11 | ALFA TELECOM s.r.o. |
| 146.158.0.0 | 146.158.127.255 | 32768 | 12/07/11 | ALFA TELECOM s.r.o. |
| 147.32.0.0 | 147.32.255.255 | 65536 | 18/06/91 | |
| 147.33.0.0 | 147.33.255.255 | 65536 | 18/06/91 | |
| 147.228.0.0 | 147.228.255.255 | 65536 | 03/03/92 | |
| 147.229.0.0 | 147.229.255.255 | 65536 | 11/01/93 | Brno University of Technology |
| 147.230.0.0 | 147.230.255.255 | 65536 | 03/03/92 | |
| 147.231.0.0 | 147.231.255.255 | 65536 | 25/11/92 | |
| 147.251.0.0 | 147.251.255.255 | 65536 | 02/08/91 | |
| 149.255.64.0 | 149.255.95.255 | 8192 | 19/08/11 | Ceznet sro |
| 151.249.128.0 | 151.249.255.255 | 32768 | 20/08/12 | ALFA TELECOM s.r.o. |
| 156.137.0.0 | 156.137.255.255 | 65536 | 10/06/92 | |
| 158.194.0.0 | 158.194.255.255 | 65536 | 08/12/92 | |
| 158.196.0.0 | 158.196.255.255 | 65536 | 03/02/93 | |
| 160.216.0.0 | 160.216.255.255 | 65536 | 05/04/04 | |
| 160.217.0.0 | 160.217.255.255 | 65536 | 05/04/04 | |
| 160.218.0.0 | 160.218.255.255 | 65536 | 05/04/04 | O2 Czech Republic, a.s. |
| 164.215.112.0 | 164.215.127.255 | 4096 | 25/11/11 | PODA a.s. |
| 165.72.0.0 | 165.72.255.255 | 65536 | 19/04/93 | |
| 176.12.112.0 | 176.12.127.255 | 4096 | 14/09/11 | Sauron CZ s.r.o. |
| 176.62.224.0 | 176.62.239.255 | 4096 | 09/06/11 | IP4ISP z.s.p.o |
| 176.74.128.0 | 176.74.159.255 | 8192 | 15/06/11 | NetDataComm, s.r.o. |
| 176.96.224.0 | 176.96.255.255 | 8192 | 15/08/11 | Emerald Real Group s.r.o. |
| 176.98.96.0 | 176.98.111.255 | 4096 | 13/10/11 | Nej.cz s.r.o. |
| 176.101.144.0 | 176.101.159.255 | 4096 | 09/11/11 | |
| 176.102.128.0 | 176.102.159.255 | 8192 | 25/11/11 | Nordic Telecom Regional s.r.o. |
| 176.114.240.0 | 176.114.255.255 | 4096 | 18/04/12 | |
| 176.118.208.0 | 176.118.223.255 | 4096 | 01/06/12 | Emerald Real Group s.r.o. |
| 176.122.32.0 | 176.122.47.255 | 4096 | 10/07/12 | |
| 178.17.0.0 | 178.17.15.255 | 4096 | 11/03/10 | UVT Internet s.r.o. |
| 178.17.80.0 | 178.17.95.255 | 4096 | 18/03/10 | Nordic Telecom Regional s.r.o. |
| 178.17.96.0 | 178.17.111.255 | 4096 | 18/03/10 | Nej.cz s.r.o. |
| 178.72.192.0 | 178.72.255.255 | 16384 | 18/03/10 | Nej.cz s.r.o. |
| 178.77.192.0 | 178.77.255.255 | 16384 | 21/04/10 | Vodafone Czech Republic a.s. |
| 178.209.128.0 | 178.209.159.255 | 8192 | 03/06/10 | Dragon Internet a.s. |
| 178.238.32.0 | 178.238.47.255 | 4096 | 12/07/10 | Master Internet s.r.o. |
| 188.75.128.0 | 188.75.191.255 | 16384 | 24/08/09 | JON.CZ s.r.o. |
| 188.116.64.0 | 188.116.127.255 | 16384 | 04/06/09 | SELECT SYSTEM, s.r.o. |
| 188.120.192.0 | 188.120.223.255 | 8192 | 05/05/09 | IP4ISP z.s.p.o |
| 188.122.192.0 | 188.122.223.255 | 8192 | 04/06/09 | Magnalink, a.s. |
| 188.130.128.0 | 188.130.191.255 | 16384 | 31/03/09 | NetArt Group s.r.o. |
| 188.130.192.0 | 188.130.223.255 | 8192 | 31/03/09 | NetArt Group s.r.o. |
| 188.130.240.0 | 188.130.255.255 | 4096 | 31/03/09 | NetArt Group s.r.o. |
| 188.134.128.0 | 188.134.255.255 | 32768 | 28/04/09 | PODA a.s. |
| 188.175.0.0 | 188.175.255.255 | 65536 | 24/08/09 | Nej.cz s.r.o. |
| 188.244.48.0 | 188.244.63.255 | 4096 | 31/07/09 | InterneXt 2000, s.r.o. |
| 188.246.96.0 | 188.246.127.255 | 8192 | 18/08/09 | SychrovNET s.r.o |
| 192.124.175.0 | 192.124.191.255 | 4352 | 23/09/91 | |
| 193.84.32.0 | 193.84.47.255 | 4096 | 01/09/93 | |
| 193.84.144.0 | 193.84.159.255 | 4096 | 01/09/93 | |
| 193.84.160.0 | 193.84.175.255 | 4096 | 01/09/93 | |
| 193.84.192.0 | 193.84.223.255 | 8192 | 01/09/93 | |
| 193.85.0.0 | 193.85.255.255 | 65536 | 01/09/93 | T-Mobile Czech Republic a.s. |
| 193.86.0.0 | 193.86.255.255 | 65536 | 20/06/94 | T-Mobile Czech Republic a.s. |
| 193.150.128.0 | 193.150.143.255 | 4096 | 10/06/97 | FIBER TELECOM s.r.o. |
| 193.164.32.0 | 193.164.79.255 | 12288 | 14/03/96 | |
| 193.165.0.0 | 193.165.255.255 | 65536 | 21/03/96 | PODA a.s. |
| 193.179.0.0 | 193.179.255.255 | 65536 | 08/08/95 | T-Mobile Czech Republic a.s. |
| 194.12.32.0 | 194.12.47.255 | 4096 | 18/08/10 | |
| 194.87.0.0 | 194.87.127.255 | 32768 | 01/09/94 | Reliable Communications s.r.o. |
| 194.87.128.0 | 194.87.255.255 | 32768 | 01/09/94 | Reliable Communications s.r.o. |
| 194.108.0.0 | 194.108.31.255 | 8192 | 03/11/94 | T-Mobile Czech Republic a.s. |
| 194.108.32.0 | 194.108.63.255 | 8192 | 12/01/95 | T-Mobile Czech Republic a.s. |
| 194.108.64.0 | 194.108.127.255 | 16384 | 01/01/95 | T-Mobile Czech Republic a.s. |
| 194.108.128.0 | 194.108.255.255 | 32768 | 01/01/95 | T-Mobile Czech Republic a.s. |
| 194.149.96.0 | 194.149.127.255 | 8192 | 28/05/01 | T-Mobile Czech Republic a.s. |
| 194.212.0.0 | 194.212.255.255 | 65536 | 14/12/95 | T-Mobile Czech Republic a.s. |
| 194.213.32.0 | 194.213.63.255 | 8192 | 26/01/96 | T-Mobile Czech Republic a.s. |
| 194.213.192.0 | 194.213.223.255 | 8192 | 11/01/96 | T-Mobile Czech Republic a.s. |
| 194.213.224.0 | 194.213.255.255 | 8192 | 30/01/96 | Quantcom, a.s. |
| 194.228.0.0 | 194.228.31.255 | 8192 | 12/01/96 | O2 Czech Republic, a.s. |
| 194.228.32.0 | 194.228.63.255 | 8192 | 03/10/97 | O2 Czech Republic, a.s. |
| 194.228.64.0 | 194.228.127.255 | 16384 | 03/10/97 | O2 Czech Republic, a.s. |
| 194.228.128.0 | 194.228.255.255 | 32768 | 03/10/97 | O2 Czech Republic, a.s. |
| 195.22.32.0 | 195.22.63.255 | 8192 | 19/06/97 | T-Mobile Czech Republic a.s. |
| 195.39.0.0 | 195.39.127.255 | 32768 | 02/12/96 | T-Mobile Czech Republic a.s. |
| 195.47.0.0 | 195.47.127.255 | 32768 | 10/12/96 | T-Mobile Czech Republic a.s. |
| 195.58.32.0 | 195.58.63.255 | 8192 | 30/06/97 | Reliable Communications s.r.o. |
| 195.70.128.0 | 195.70.159.255 | 8192 | 08/11/96 | T-Mobile Czech Republic a.s. |
| 195.113.0.0 | 195.113.255.255 | 65536 | 17/03/97 | CESNET z.s.p.o. |
| 195.122.192.0 | 195.122.223.255 | 8192 | 20/07/00 | Quantcom, a.s. |
| 195.128.192.0 | 195.128.223.255 | 8192 | 23/05/97 | Quantcom, a.s. |
| 195.133.0.0 | 195.133.63.255 | 16384 | 15/04/97 | Reliable Communications s.r.o. |
| 195.133.64.0 | 195.133.95.255 | 8192 | 15/04/97 | Reliable Communications s.r.o. |
| 195.144.96.0 | 195.144.127.255 | 8192 | 18/03/97 | T-Mobile Czech Republic a.s. |
| 195.146.96.0 | 195.146.127.255 | 8192 | 08/09/97 | CD-Telematika a.s. |
| 195.178.64.0 | 195.178.95.255 | 8192 | 26/02/97 | CESNET z.s.p.o. |
| 195.181.208.0 | 195.181.223.255 | 4096 | 20/03/97 | INTERNET CZ, a.s. |
| 195.250.128.0 | 195.250.159.255 | 8192 | 07/01/97 | Quantcom, a.s. |
| 198.141.0.0 | 198.141.255.255 | 65536 | 19/04/93 | |
| 199.40.0.0 | 199.41.255.255 | 131072 | 28/10/93 | |
| 212.4.128.0 | 212.4.159.255 | 8192 | 11/06/08 | Nej.cz s.r.o. |
| 212.11.96.0 | 212.11.127.255 | 8192 | 06/09/99 | CD-Telematika a.s. |
| 212.20.64.0 | 212.20.95.255 | 8192 | 31/07/98 | Mopos Communications A.S. |
| 212.20.96.0 | 212.20.127.255 | 8192 | 16/08/99 | Quantcom, a.s. |
| 212.24.128.0 | 212.24.159.255 | 8192 | 15/04/98 | Quantcom, a.s. |
| 212.27.192.0 | 212.27.223.255 | 8192 | 31/08/98 | Quantcom, a.s. |
| 212.47.0.0 | 212.47.31.255 | 8192 | 02/04/98 | T-Mobile Czech Republic a.s. |
| 212.65.192.0 | 212.65.223.255 | 8192 | 01/06/99 | T-Mobile Czech Republic a.s. |
| 212.65.224.0 | 212.65.255.255 | 8192 | 25/01/00 | T-Mobile Czech Republic a.s. |
| 212.67.64.0 | 212.67.95.255 | 8192 | 26/01/99 | T-Mobile Czech Republic a.s. |
| 212.71.128.0 | 212.71.159.255 | 8192 | 10/12/98 | Ipex Ltd. |
| 212.71.160.0 | 212.71.191.255 | 8192 | 22/06/99 | Ipex Ltd. |
| 212.79.96.0 | 212.79.111.255 | 4096 | 18/10/10 | FreeTel, s.r.o. |
| 212.80.64.0 | 212.80.95.255 | 8192 | 12/01/99 | Quantcom, a.s. |
| 212.90.224.0 | 212.90.255.255 | 8192 | 31/07/00 | InterneXt 2000, s.r.o. |
| 212.96.160.0 | 212.96.191.255 | 8192 | 07/07/99 | Nej.cz s.r.o. |
| 212.109.176.0 | 212.109.191.255 | 4096 | 05/03/12 | PODA a.s. |
| 212.111.0.0 | 212.111.31.255 | 8192 | 12/11/98 | InterneXt 2000, s.r.o. |
| 212.158.128.0 | 212.158.159.255 | 8192 | 06/09/02 | RADIOKOMUNIKACE a.s. |
| 212.192.0.0 | 212.192.31.255 | 8192 | 15/01/98 | Reliable Communications s.r.o. |
| 212.192.208.0 | 212.192.223.255 | 4096 | 15/01/98 | Reliable Communications s.r.o. |
| 212.192.240.0 | 212.192.255.255 | 4096 | 15/01/98 | Reliable Communications s.r.o. |
| 212.193.0.0 | 212.193.31.255 | 8192 | 12/05/99 | Reliable Communications s.r.o. |
| 213.19.0.0 | 213.19.127.255 | 32768 | 26/09/03 | Nordic Telecom Regional s.r.o. |
| 213.29.0.0 | 213.29.255.255 | 65536 | 08/01/04 | T-Mobile Czech Republic a.s. |
| 213.129.128.0 | 213.129.159.255 | 8192 | 26/08/08 | SOFTEX NCP, s.r.o. |
| 213.151.64.0 | 213.151.95.255 | 8192 | 06/04/00 | Quantcom, a.s. |
| 213.155.32.0 | 213.155.63.255 | 8192 | 07/12/07 | Nordic Telecom Regional s.r.o. |
| 213.155.224.0 | 213.155.255.255 | 8192 | 30/01/03 | Nej.cz s.r.o. |
| 213.168.160.0 | 213.168.175.255 | 4096 | 25/05/01 | Ipex Ltd. |
| 213.168.176.0 | 213.168.191.255 | 4096 | 08/04/03 | Dragon Internet a.s. |
| 213.175.32.0 | 213.175.63.255 | 8192 | 12/01/01 | Quantcom, a.s. |
| 213.180.32.0 | 213.180.63.255 | 8192 | 18/01/01 | Nej.cz s.r.o. |
| 213.191.96.0 | 213.191.127.255 | 8192 | 11/12/02 | Quantcom, a.s. |
| 213.192.0.0 | 213.192.63.255 | 16384 | 01/10/04 | Vodafone Czech Republic a.s. |
| 213.194.192.0 | 213.194.207.255 | 4096 | 20/02/03 | Kabelova televize Koprivnice, s.r.o. |
| 213.194.224.0 | 213.194.255.255 | 8192 | 20/02/03 | TKR Jasek, s.r.o. |
| 213.195.192.0 | 213.195.255.255 | 16384 | 15/07/02 | ha-vel internet s.r.o. |
| 213.210.128.0 | 213.210.191.255 | 16384 | 02/05/00 | T-Mobile Czech Republic a.s. |
| 213.211.32.0 | 213.211.63.255 | 8192 | 27/03/03 | Nej.cz s.r.o. |
| 213.216.32.0 | 213.216.63.255 | 8192 | 01/04/03 | PODA a.s. |
| 213.220.192.0 | 213.220.255.255 | 16384 | 06/03/03 | Vodafone Czech Republic a.s. |
| 213.226.192.0 | 213.226.207.255 | 4096 | 31/03/03 | BECO Link,spol.s.r.o. |
| 213.226.208.0 | 213.226.223.255 | 4096 | 31/03/03 | OMEGA plus Chrudim s.r.o. |
| 213.226.224.0 | 213.226.255.255 | 8192 | 31/03/03 | M-SOFT, spol. s r.o. |
| 213.235.64.0 | 213.235.127.255 | 16384 | 14/11/02 | InterneXt 2000, s.r.o. |
| 213.235.128.0 | 213.235.191.255 | 16384 | 29/08/00 | CD-Telematika a.s. |
| 213.250.192.0 | 213.250.255.255 | 16384 | 28/02/03 | Nordic Telecom Regional s.r.o. |
| 217.16.176.0 | 217.16.191.255 | 4096 | 08/12/09 | VSHosting s.r.o. |
| 217.28.80.0 | 217.28.95.255 | 4096 | 05/11/10 | FIBER Network s.r.o. |
| 217.29.0.0 | 217.29.15.255 | 4096 | 06/03/09 | NETAIR, s.r.o. |
| 217.30.64.0 | 217.30.79.255 | 4096 | 10/12/08 | T-Mobile Czech Republic a.s. |
| 217.31.48.0 | 217.31.63.255 | 4096 | 10/06/03 | Webglobe, s.r.o. |
| 217.31.192.0 | 217.31.207.255 | 4096 | 27/08/02 | CZ.NIC, z.s.p.o. |
| 217.64.0.0 | 217.64.15.255 | 4096 | 05/05/03 | GiTy, a.s. |
| 217.66.160.0 | 217.66.175.255 | 4096 | 06/11/00 | ha-vel internet s.r.o. |
| 217.66.176.0 | 217.66.191.255 | 4096 | 25/01/02 | ha-vel internet s.r.o. |
| 217.69.96.0 | 217.69.111.255 | 4096 | 17/11/00 | Masarykova univerzita - Ustav vypocetni techniky |
| 217.75.208.0 | 217.75.223.255 | 4096 | 07/10/03 | ISP Alliance a.s. |
| 217.77.160.0 | 217.77.175.255 | 4096 | 04/12/00 | Vodafone Czech Republic a.s. |
| 217.112.160.0 | 217.112.175.255 | 4096 | 12/01/01 | AVONET, s.r.o. |
| 217.115.240.0 | 217.115.255.255 | 4096 | 15/01/04 | AVONET, s.r.o. |
| 217.117.208.0 | 217.117.223.255 | 4096 | 02/02/04 | O2 Czech Republic, a.s. |
| 217.168.208.0 | 217.168.223.255 | 4096 | 22/07/04 | TRIOPTIMUM s.r.o. |
| 217.169.176.0 | 217.169.191.255 | 4096 | 04/08/04 | Spinoco Czech Republic, a.s. |
| 217.170.96.0 | 217.170.111.255 | 4096 | 21/11/08 | Nordic Telecom Regional s.r.o. |
| 217.194.160.0 | 217.194.175.255 | 4096 | 02/04/09 | O2 Czech Republic, a.s. |
| 217.195.160.0 | 217.195.175.255 | 4096 | 24/04/01 | Nej.cz s.r.o. |
| 217.196.112.0 | 217.196.127.255 | 4096 | 14/05/10 | Nordic Telecom Regional s.r.o. |
| 217.196.208.0 | 217.196.223.255 | 4096 | 13/10/04 | MIRAMO spol. s.r.o. |
| 217.197.32.0 | 217.197.47.255 | 4096 | 27/02/09 | MIRAMO spol. s.r.o. |
| 217.197.144.0 | 217.197.159.255 | 4096 | 21/10/04 | Nordic Telecom Regional s.r.o. |
| 217.198.112.0 | 217.198.127.255 | 4096 | 15/11/04 | ZONER a.s.
|
Major IP Address Blocks For Czech Republic