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