Python convert a list of ips into a list of networks

Question

I have a list of ips like this;

ban = ['162.210.197.58', '36.72.31.198', '163.172.221.63', '134.35.42.49', '176.65.117.81', '46.8.28.110', '110.139.16.72', '31.29.61.218', '38.95.109.67', '31.155.204.143', '5.254.65.190', '46.101.127.145', '111.15.193.84', '187.142.198.151', '188.227.45.110', '125.236.168.242', '5.254.65.122', '5.254.65.28', '185.182.81.93', '188.210.133.199', '151.241.125.237', '207.148.111.126', '145.239.70.231', '2.94.113.65', '204.85.191.30', '2.229.128.135', '92.127.255.182', '46.133.77.143', '118.69.63.15', '46.39.55.162', '185.182.81.14', '188.244.132.49', '138.197.160.121', '176.15.222.56', '82.178.233.175', '94.41.43.252', '78.137.73.171', '5.142.90.22', '212.2.212.151', '207.244.77.174', '176.59.46.108', '179.7.106.194', '154.118.17.57', '5.254.65.119', '176.33.236.247', '41.218.215.25', '199.249.224.47', '207.244.83.97', '84.241.13.93', '197.210.54.218', '93.35.166.148', '218.107.49.9', '39.55.130.71', '78.168.207.252', '213.141.227.238', '36.69.70.20', '5.254.65.218', '103.10.197.12', '207.244.83.194', '122.163.128.154', '93.185.16.82', '95.24.168.216', '103.16.26.148', '118.100.59.199', '209.59.188.147', '207.244.93.234', '88.81.46.212', '23.105.140.146', '89.104.104.225', '83.149.21.13', '41.34.51.195', '146.185.133.214', '37.204.108.198', '188.123.231.194', '85.140.3.172', '185.182.81.45', '185.182.81.61', '5.254.65.213', '185.182.81.136', '103.10.197.205', '185.182.81.86', '207.244.79.138', '116.240.84.42', '91.219.101.68', '80.191.221.23', '178.62.220.63', '209.58.148.85', '167.114.159.186', '108.59.8.246', '74.82.17.84', '178.129.172.216', '36.72.178.137', '41.254.7.157', '185.190.241.83', '185.182.81.58', '107.77.209.79', '207.244.77.137', '58.27.54.130', '69.15.118.106', '85.94.0.117', '41.215.173.28', '185.182.81.28', '46.101.18.209', '5.254.65.185', '195.123.217.178', '2.48.190.213', '188.247.190.79', '192.119.160.190', '95.72.13.156', '68.149.146.193', '197.157.244.206', '103.10.197.157', '176.195.155.114', '194.88.107.55', '83.220.237.120', '185.182.81.53', '82.102.21.114', '84.241.6.212', '207.244.78.48', '125.238.220.170', '159.8.170.20', '176.15.60.114', '46.138.146.207', '128.199.201.63', '5.254.65.179', '45.242.236.151', '188.162.177.199', '186.68.202.84', '5.202.179.40', '41.215.173.10', '103.255.6.80', '83.102.219.15', '188.32.127.17', '185.182.81.89', '207.244.86.235', '212.252.141.6', '37.147.79.146', '176.59.80.125', '212.71.255.8', '87.240.26.58', '91.79.215.243', '185.182.81.6', '207.244.83.102', '185.182.81.20', '109.133.114.88', '199.249.223.78', '37.110.94.227', '185.182.81.42', '109.252.76.194', '167.99.46.145', '95.221.186.30', '185.48.188.131', '2.191.41.213', '82.113.106.115', '178.62.102.23', '197.255.118.226', '185.182.81.12', '41.207.5.116', '68.133.80.56', '103.255.7.6', '162.210.197.53', '138.197.174.120', '185.182.81.40', '154.124.87.182', '73.218.73.13', '185.182.81.66', '139.5.231.112', '185.69.124.60', '93.190.177.36', '207.244.79.136', '66.160.199.70', '78.106.211.173', '121.52.156.4', '109.201.133.100', '78.85.40.39', '91.79.162.72', '83.242.238.138', '5.254.65.125', '5.254.65.175', '103.214.2.4', '37.232.192.102', '61.5.58.240', '41.190.14.40', '146.185.157.250', '195.123.225.47', '103.60.210.61', '85.102.111.101', '77.30.202.151', '194.146.149.46', '95.27.45.39', '146.185.158.24', '207.244.86.240', '195.175.45.154', '195.149.108.48', '95.12.119.124', '82.102.31.203', '156.221.118.172', '78.108.178.87', '185.182.81.37', '41.219.31.245', '191.43.27.200', '142.44.210.125', '5.254.65.169', '46.196.145.191', '68.133.80.55', '5.254.65.127', '68.133.80.58', '31.173.84.201', '39.50.173.251', '46.242.10.175', '201.208.20.239', '174.16.34.27', '65.19.167.132', '182.0.139.135', '128.68.185.234', '78.178.85.114', '182.182.91.44', '103.10.197.155', '199.249.223.77', '46.173.75.34', '197.32.29.188', '185.18.46.170', '107.181.182.227', '105.50.114.109', '199.87.154.255', '185.182.81.23', '5.115.181.178', '67.205.137.158', '46.73.40.13', '117.224.14.73', '155.239.150.15', '98.253.130.3', '122.129.77.114', '176.194.163.88', '109.63.235.0', '85.140.7.208', '207.244.82.229', '94.29.124.69', '188.245.245.146', '78.177.102.153', '197.210.173.174', '85.174.236.178', '82.247.106.95', '207.244.83.218', '162.210.197.55', '185.180.197.65', '31.8.130.8', '114.124.135.2', '46.172.203.108', '185.182.81.41', '199.115.116.37', '207.244.78.175', '207.244.77.139', '185.182.81.85', '172.56.30.213', '79.126.114.90', '5.254.65.114', '207.244.77.9', '103.10.197.202', '87.245.249.103', '185.182.81.48', '39.54.218.203', '109.169.172.138', '39.50.16.30', '89.104.104.227', '78.189.31.17', '207.244.77.19', '95.28.26.67', '39.54.6.166', '145.255.169.92', '176.43.253.71', '185.107.70.202', '65.19.167.131', '199.244.86.149', '197.156.241.249', '114.125.184.172', '89.178.171.173', '151.235.84.235', '185.104.184.120', '197.243.40.75', '88.253.119.59', '103.76.21.243', '207.244.78.50', '95.73.121.206', '185.182.81.60', '176.55.167.228', '179.54.147.13', '156.198.95.108', '199.249.223.63', '165.139.150.133', '185.182.81.16', '185.182.81.80', '162.210.197.54', '41.34.8.12', '86.161.166.126', '103.21.125.80', '5.254.65.15', '65.49.126.73', '69.117.214.158', '92.96.162.204', '64.62.232.66', '2.48.180.82', '213.87.163.155', '108.59.8.217', '91.151.188.194', '197.229.0.32', '76.218.238.42', '178.62.6.233', '159.65.117.243', '217.118.78.80', '109.252.25.1', '96.80.89.69', '89.40.118.87', '185.182.81.25', '73.43.73.161', '108.59.10.184', '5.155.214.63', '103.10.197.195', '95.71.21.143', '113.21.99.50', '198.96.155.3', '203.156.158.201', '5.254.65.19', '103.10.197.133', '207.244.94.5', '190.39.1.149', '103.10.197.61', '213.87.139.175', '91.244.39.229', '136.0.99.204', '77.34.114.167', '185.76.248.253', '185.182.81.139', '207.244.82.154', '199.115.115.194', '139.59.84.23', '209.126.90.78', '156.219.221.191', '109.252.99.3', '67.252.57.173', '222.70.120.196', '207.244.78.47', '156.197.120.27', '185.182.81.76', '78.95.166.34', '103.10.197.131', '37.21.231.95', '87.225.68.121', '46.40.227.14', '77.43.173.56', '114.124.181.244', '37.1.129.188', '128.72.83.20', '5.254.65.85', '31.129.204.120', '5.158.237.18', '151.243.199.70', '185.182.81.77', '103.228.157.94', '69.202.142.68', '94.25.180.120', '185.182.81.91', '103.10.197.154', '202.22.227.26', '49.145.151.70', '207.244.86.198', '185.182.81.19', '185.182.81.69', '5.254.65.123', '65.49.68.203', '103.79.155.58', '216.185.36.99', '80.191.221.21', '5.254.65.220', '91.215.69.212', '5.254.65.24', '103.10.197.204', '105.67.7.89', '195.112.116.163', '46.42.167.129', '190.142.101.84', '207.244.79.152', '5.59.53.95', '14.139.125.241', '197.211.63.74', '195.190.107.166', '185.182.81.135', '194.146.181.131', '83.220.237.252', '41.215.173.33', '142.44.210.206', '62.213.109.218', '199.168.151.35', '5.254.65.217', '45.242.236.74', '80.253.23.149', '185.182.81.11', '93.168.185.76', '185.182.81.82', '77.106.62.60', '185.220.101.20', '185.182.81.47', '185.182.81.56', '5.41.65.151', '66.160.188.43', '74.82.35.71', '79.139.176.23', '88.203.110.34', '64.147.94.201', '213.87.132.49', '91.216.114.201', '179.53.157.148', '185.182.81.4', '196.74.129.52', '95.72.247.249', '185.182.81.71', '185.182.81.138', '154.68.60.100', '81.214.142.169', '147.110.59.244', '200.2.187.239', '68.133.80.57', '5.44.174.110', '142.234.201.129', '89.238.177.226', '120.188.86.112', '207.244.78.173', '173.208.82.162', '115.178.200.218', '139.162.233.190', '43.245.8.67', '103.10.197.58', '207.244.83.219', '148.0.219.242', '5.126.66.228', '37.190.37.137', '182.179.179.160', '103.10.197.220', '41.66.255.100', '37.144.44.196', '207.244.77.18', '5.254.65.102', '213.33.193.34', '185.182.81.51', '154.121.5.242', '92.246.191.120', '186.167.242.158', '217.117.66.54', '85.88.176.70', '114.124.182.15', '146.185.177.103', '179.180.67.5', '207.154.232.214', '91.192.70.25', '156.38.35.15', '147.135.254.228', '103.10.197.130', '195.214.140.20', '31.29.217.147', '73.170.68.18', '142.234.201.141', '2.191.76.162', '151.80.36.117', '5.254.65.195', '213.87.225.138', '5.0.249.218', '27.68.68.184', '178.59.189.246', '95.30.31.106', '213.87.126.137', '104.45.14.157', '196.6.216.5', '185.182.81.131', '5.254.65.177', '103.255.7.21', '212.75.159.112', '103.10.197.196', '217.55.47.233', '109.252.76.112', '36.84.62.52', '185.253.97.52', '31.148.253.33', '185.182.81.78', '159.224.41.242', '46.101.16.232', '5.254.65.97', '89.160.136.97', '207.244.78.8', '5.254.65.82', '185.182.81.92', '95.29.19.127', '185.182.81.22', '66.160.201.58', '93.90.204.172', '2.93.201.96', '182.1.178.122', '148.0.142.65', '94.233.224.122', '163.232.200.115', '200.236.75.164', '106.204.119.26', '168.8.192.22', '185.182.81.83', '107.77.209.106', '207.244.78.17', '89.104.104.224', '106.51.234.22', '71.12.167.41', '188.247.109.2', '213.87.156.209', '192.240.119.59', '78.180.74.219', '37.107.111.54', '103.10.197.132', '5.254.65.8', '105.167.52.122', '146.185.157.173', '95.184.110.95', '23.101.10.145', '5.254.65.124', '151.231.40.224', '178.129.222.227', '185.182.81.68', '185.107.47.215', '146.185.156.139', '120.188.39.56', '176.14.163.226', '178.62.113.166', '95.153.134.122', '185.182.81.75', '156.194.101.98', '185.182.81.72', '182.187.97.214', '41.72.194.58', '196.201.199.210', '185.182.81.79', '51.39.237.115', '202.146.235.80', '176.123.126.254', '86.149.9.202', '41.254.4.43', '91.240.73.248', '185.88.157.231', '171.229.95.88', '5.254.65.129', '139.59.225.74', '95.24.175.100', '5.254.65.182', '185.182.81.50', '89.31.57.5', '129.56.11.18', '207.244.83.104', '199.115.118.85', '89.235.123.202', '154.69.67.5', '36.84.62.49', '146.185.157.38', '31.29.248.93', '109.252.20.82', '207.244.94.36', '66.160.188.67', '5.254.65.6', '38.95.109.110', '178.175.132.67', '103.214.2.35', '196.24.72.24', '185.182.81.9', '109.252.177.102', '136.252.163.99', '185.104.184.116', '162.247.72.199', '213.55.105.3', '5.79.68.161', '188.170.103.189', '5.254.65.21', '88.228.167.196', '41.242.138.49', '103.10.197.59', '178.73.220.45', '200.82.249.248', '5.254.65.107', '207.244.77.172', '5.254.65.84', '37.190.37.197', '213.87.131.60', '37.112.229.42', '95.24.91.228', '185.182.81.84', '77.247.181.162', '78.81.231.143', '185.182.81.46', '207.244.83.114', '41.253.39.240', '92.50.223.44', '173.208.82.164', '41.85.161.178', '213.87.122.199', '37.52.183.88', '207.244.72.201', '109.252.53.106', '108.59.8.208', '104.129.18.10', '122.57.37.39', '176.59.48.37', '125.178.76.189', '154.130.48.206', '113.169.71.251', '91.215.69.23', '54.36.105.8', '95.10.207.189', '128.31.0.13', '81.211.123.74', '103.10.197.13', '46.242.10.245', '81.131.164.246', '156.194.244.214', '178.62.106.169', '204.85.191.31', '207.244.86.200', '77.27.69.166', '192.96.205.131', '139.59.3.30', '80.252.16.20', '185.182.81.137', '150.100.253.6', '103.25.72.234', '207.244.86.195', '154.160.16.103', '78.95.6.2', '185.182.81.44', '197.248.213.18', '202.142.79.94', '38.95.108.247', '2.135.158.83', '37.73.82.56', '103.255.6.75', '5.254.65.110', '64.62.175.68', '207.244.83.209', '172.241.114.173', '207.244.79.137', '207.244.82.251', '207.244.86.232', '94.233.224.26', '174.141.115.146', '109.174.112.128', '93.91.80.6', '41.190.3.77', '159.89.115.182', '188.163.3.226', '95.191.226.57', '139.5.154.162', '193.0.219.72', '185.182.81.70', '138.197.174.51', '41.217.109.25', '39.50.91.154', '37.204.198.46', '130.180.218.30', '5.254.65.17', '138.197.160.42', '5.254.65.187', '37.195.213.64', '188.170.73.65', '197.48.231.108', '185.189.113.42', '185.182.81.74', '41.66.203.243', '163.21.7.42', '5.254.65.83', '157.50.236.233', '94.233.224.7', '128.71.22.17', '130.34.246.190', '185.52.141.42', '139.59.84.2', '84.241.202.178', '123.242.160.17', '74.82.17.52', '182.0.205.139', '203.202.229.194', '89.238.191.150', '79.165.225.194', '73.61.8.75', '41.254.8.167', '185.182.81.5', '94.47.16.26', '182.186.238.234', '156.216.204.96', '109.252.57.81', '180.252.104.52', '79.148.109.242', '66.160.201.47', '2.191.110.236', '207.244.77.13', '5.254.65.98', '145.255.166.214', '159.203.130.12', '197.234.221.77', '159.89.206.211', '85.141.69.27', '185.182.81.90', '77.31.101.152', '202.22.237.40', '95.221.205.237', '207.244.77.55', '104.236.233.75', '5.254.65.104', '104.236.233.182', '103.10.197.60', '103.10.197.222', '182.54.141.154', '138.197.174.79', '176.33.136.50', '185.182.81.10', '185.220.101.30', '94.138.40.2', '41.44.178.2', '196.207.121.147', '213.138.86.113', '31.173.83.65', '199.115.115.197', '46.72.89.106', '103.240.170.209', '5.254.65.215', '146.185.171.157', '185.182.81.57', '188.119.59.75', '46.164.104.176', '176.52.96.95', '207.244.83.99', '31.43.31.116', '178.62.208.24', '5.254.65.167', '185.182.81.73', '104.194.24.250', '79.200.158.58', '79.111.52.85', '103.10.197.91', '199.249.224.65', '5.136.175.48', '111.119.165.253', '216.218.222.12', '191.248.209.198', '5.254.65.81', '178.46.97.50', '27.97.248.46', '190.72.126.220', '178.140.204.131', '5.114.82.81', '118.175.154.120', '207.244.90.69', '185.182.81.7', '103.17.88.247', '108.248.141.54', '130.34.246.189', '207.244.79.154', '41.66.255.247', '128.69.14.62', '87.107.208.172', '199.115.116.35', '46.191.213.221', '199.115.114.220', '172.56.44.234', '69.12.94.91', '5.254.65.99', '37.203.243.97', '185.182.81.29', '37.210.142.211', '207.244.78.9', '206.189.56.39', '193.104.27.86', '37.190.37.236', '112.197.34.56', '189.124.82.209', '99.66.132.171', '5.254.65.16', '46.201.114.83', '81.31.178.23', '94.47.97.98', '82.102.31.251', '103.10.197.203', '94.98.252.208', '14.139.160.236', '185.182.81.130', '184.43.6.218', '92.37.143.180', '5.254.65.12', '83.142.185.126', '5.254.65.178', '213.87.123.37', '36.67.214.132', '185.182.81.21', '205.164.32.216', '207.244.83.198', '5.254.65.11', '197.210.221.42', '207.244.83.206', '5.254.65.130', '176.14.156.125', '94.138.40.7', '182.75.59.110', '162.210.197.57', '41.35.98.90', '95.139.11.104', '103.10.197.93', '39.40.168.95', '213.87.127.74', '2.94.25.98', '216.218.222.14', '207.244.82.155', '138.197.154.118', '199.249.223.69', '5.254.65.112', '62.120.19.197', '185.182.81.17', '148.0.140.9', '103.10.197.197', '185.182.81.15', '217.114.239.64', '185.182.81.134', '130.180.217.17', '111.88.82.111', '112.210.165.48', '81.92.200.142', '185.182.81.43', '207.244.77.3', '169.159.85.133', '5.254.65.20', '197.234.221.34', '192.162.242.11', '185.182.81.67', '103.247.48.9', '109.173.73.174', '171.25.193.20', '207.244.77.17', '176.59.44.162', '95.28.48.169', '5.254.65.113', '62.112.114.74', '5.254.65.174', '179.96.223.197', '149.202.202.78', '146.185.157.243', '110.93.216.238', '217.148.214.162', '23.100.15.206', '24.133.136.29', '59.189.57.53', '185.182.81.62', '31.181.90.52', '5.254.65.117', '94.99.170.144', '146.185.157.164', '178.62.230.201', '41.223.117.58', '197.54.177.15', '212.252.67.30', '109.252.86.175', '194.146.149.39', '207.244.83.197', '190.94.3.236', '207.244.94.9', '5.254.65.193', '5.254.65.194', '207.244.77.10', '146.185.158.9', '5.254.65.172', '37.156.22.79', '209.190.17.22', '103.10.197.156', '5.254.65.9', '178.140.62.96', '207.244.77.16', '109.161.121.117', '37.78.31.88', '185.220.101.13', '185.182.81.87', '87.107.165.5', '185.135.233.14', '209.58.148.100', '83.110.13.200', '5.254.65.132', '93.80.234.243', '190.39.198.140', '95.221.183.242', '185.222.209.32', '154.160.16.167', '80.71.249.236', '185.182.81.39', '41.79.197.12', '91.76.89.93', '45.247.206.86', '185.182.81.88', '192.81.222.95', '207.244.86.236', '197.210.29.171', '213.61.95.74', '41.254.7.18', '31.9.55.66', '154.112.8.183', '5.254.65.180', '37.187.158.97', '195.149.108.45', '94.179.147.128', '94.130.206.211', '31.173.85.237', '103.10.197.221', '46.39.83.173', '5.254.65.170', '5.254.65.18', '95.167.31.202', '207.244.83.212', '138.197.174.132', '185.182.81.35', '192.96.205.135', '130.88.240.92', '185.182.81.94', '90.147.2.94', '209.126.90.97', '128.75.107.209', '2.94.139.161', '103.106.174.102', '186.4.212.26', '37.145.142.85', '207.244.86.194', '72.211.60.177', '95.30.45.134', '80.71.253.200', '5.254.65.109', '185.182.81.38', '5.254.65.214', '178.62.221.111', '81.92.200.204', '89.104.104.226', '95.73.236.188', '207.244.83.113', '185.182.81.24', '103.247.48.111', '176.59.43.149', '109.233.172.188', '207.244.70.35', '84.17.230.179', '83.123.148.16', '122.171.168.163', '213.87.121.217', '110.54.232.113', '206.189.56.10', '154.160.30.129', '207.244.93.227', '178.46.96.130', '87.116.196.230', '181.208.250.104', '43.252.233.33', '207.244.82.249', '154.68.5.60', '37.27.72.154', '178.68.165.3', '194.186.9.228', '207.244.79.134', '41.34.209.13', '192.119.160.242', '37.187.129.166', '41.254.7.152', '46.38.23.226', '185.182.81.52', '27.34.104.88', '31.29.253.114', '200.17.141.3', '86.62.75.82', '93.183.219.225', '94.143.40.157', '103.10.197.194', '188.166.212.116', '185.182.81.2', '212.98.135.186', '103.10.197.92', '207.244.83.195', '217.64.17.124', '46.242.10.244', '209.58.136.236', '156.203.226.215', '103.10.197.218', '199.115.114.218', '185.182.81.8', '207.244.82.231', '95.8.0.20', '207.244.82.133', '128.74.124.28', '111.95.14.210', '213.87.126.35', '5.254.65.134', '91.240.210.185', '185.182.81.132', '95.32.139.134', '213.55.110.157', '185.182.81.26', '176.47.67.182', '91.65.54.25', '217.10.34.243', '185.182.81.133', '182.1.191.230', '103.10.197.90', '213.87.225.153', '207.244.77.184', '185.182.81.81', '5.254.65.88', '123.176.6.58', '213.55.110.206', '93.157.169.12', '103.10.197.219', '109.252.81.16', '78.111.187.63', '82.196.1.179', '185.182.81.59', '148.0.193.199', '14.202.100.66', '5.250.37.110', '156.219.245.39', '31.9.112.197', '185.112.37.25', '128.70.176.120', '185.182.81.27', '188.226.226.40', '109.174.113.45', '5.246.33.162', '5.254.65.189', '46.151.246.57', '77.71.24.206', '178.62.36.218', '185.182.81.36', '196.188.112.153', '199.249.223.49', '80.252.153.74', '87.109.169.79', '207.244.83.200', '197.210.54.144', '95.57.231.156', '207.244.94.33', '103.16.25.2', '217.174.233.46', '178.184.98.116', '185.182.81.55', '107.77.207.197', '86.21.86.205', '5.254.65.192', '38.95.108.230', '94.13.131.173', '107.77.209.181', '176.59.54.71', '128.179.252.54', '31.215.58.51', '207.244.83.123', '85.106.69.110', '192.160.102.170', '37.146.34.208', '46.39.228.226', '87.225.75.186', '159.89.123.60', '176.59.68.249', '37.143.20.94', '105.112.29.37', '89.146.74.31', '90.147.2.86', '217.144.175.138', '212.252.57.203', '131.117.162.145', '109.63.245.141', '92.97.199.104', '176.123.121.221', '213.142.154.3', '180.160.55.195', '176.195.133.16', '172.241.112.3', '207.244.83.217', '125.167.120.44', '109.252.85.9', '46.39.53.115', '206.189.201.4', '31.173.83.78', '199.115.115.215', '178.62.153.200']

How do I convert a list of ips like above into a list of subnets?

For example;

185.182.0.0/y, 207.244.0.0/x

Edit

I'm getting a lot of malicious traffic from several ips that look like they're in the same subnet, however there are a few thousand ips, how do I convert a list like this into subnets so that I can block the subnet?

Answer 1

This answer by Wang is the correct way to do this: https://stackoverflow.com/a/45503187/3176550

list_of_ips = ['10.0.0.0', '10.0.0.1', '10.0.0.2', '10.0.0.3', '10.0.0.5']
import ipaddress
nets = [ipaddress.ip_network(_ip) for _ip in list_of_ips]
cidrs = ipaddress.collapse_addresses(nets)
list(cidrs)
Out[6]: [IPv4Network('10.0.0.0/30'), IPv4Network('10.0.0.5/32')]

Answer 2

If IP addresses are stored as a list and are in a string type, here is one very simple solution to reseting all subnets and then at the same time leave duplicates in another condition. Maybe slow code, but functional code.

data = ['162.210.197.58', '36.72.121.146', '36.72.121.4', '162.210.108.4', '190.5.140.90']

tmp = []
for ip in data:
    ip1, ip2, ip3, ip4 = ip.split('.')
    if (ip1 + '.' + ip2 + '.0.0') not in tmp:
        tmp.append(ip1 + '.' + ip2 + '.0.0')
data = tmp

print(data)

Another example:

data = ['162.210.197.58', '36.72.121.146', '36.72.121.4', '162.210.108.4', '190.5.140.90']

msk = 1   # range 1-3, how much bytes do you want set to zero, from right side (in IP address)
tmp = []
for ip in data:
    s = '.'.join(ip.split('.')[:-msk]) + ('.0'*msk)   # split the string by '.' delimiter, then combine all to back but without msk entries from the right side, then add string '.0' repeated msk times
    if s not in tmp:
        tmp.append(s)
data = tmp

print(data)

A note:

It is better to keep IP addresses as an integer data type (as Python does not know the Byte data type). Then any IP address operations will be really simple and fast. Logical operations NOR, XOR, OR, AND, etc. (as needed), you could do everything you need in a professional area of computer networks using a mask. Of course, it depends on the length of the addressable IP address field - as the colleagues mentioned above. If the length of the standard most frequently used is 16 bits (2 bytes) or 24 bits (3 bytes), then my code is sufficient. However, if the length in the bits is non-standard (26 bits, 12 bits, 10 bits, etc.), then it is better to set the integer type from the string IP address and further process the IP addresses already as IPv4 length estimates, which are 4 bytes operations XOR, AND, OR, ...).

Answer 3

Note that an IPv4 subnet may be many different sizes, from /32 for a single IP address to /0 for the whole internet. You don't have enough information to work out how a network administrator has subnetted their network if the only thing you have is an IP address. Assuming a /24 or a /16 will often be wrong.

That said, you could use whois to lookup the net ranges associated with the ASNs which contain particular IP addresses. You could use whois from python via a tool like ipwhois to build up a list of net ranges that you consider "bad" based on the fact that you've had a contact from a bad IP in that ASN.

from ipwhois import IPWhois

bad_ips = ["185.182.81.12",]
bad_asn_ranges = set()

for ip in bad_ips:
    obj = IPWhois(ip)
    ret = obj.lookup_whois()
    print(ret)
    bad_asn_ranges.add(ret['asn_cidr'])

print(bad_asn_ranges)

This would have unintended consequences if good people and bad people both coexist on the same ASN as one another.

Answer 4

Im guessing subnets are 000.000.XXX.XXX where the X's can be a single 0?

Lets assume you have:

ban = ['162.210.197.58/32', '36.72.31.198/34', ..., '134.35.42.49/20', '176.65.117.81/32']

Use a set comprehension to ensure you get only unique elements:

subnets = {'.'.join(addr.split('.')[:2]) + '.0.0/' + addr.split('/')[-1] for addr in ban}

And you get:

>>> subnets
{'162.210.0.0/32', '36.72.0.0/34', ..., '134.35.0.0/20'}

Answer 5

This will give you the 24 bit prefixes and number of occurrences. defaultdict is used to automatically insert a 0 in the dictionary when the key is missing, making the code more simple.

data = ['162.210.197.58', '36.72.31.198'] #etc....

import collections
subnets = collections.defaultdict(int)

for ip in data:
   subnets[".".join(ip.split('.')[0:3])] += 1

print(subnets)