Recently we were plagued by Bots from China creating posts in a phpbb3 board and several wordpress websites.

After spending time researching how to block them we discovered this little gem.

If your website uses a .htaccess file in the root then add the following code to it to ban several countries from even seeing the site.

Here is the code

<Files *>
order deny,allow

# Cambodia (KH)
deny from 114.134.184.0/21

# Chinese (CN) IP addresses follow:
deny from 1.80.0.0/13 1.192.0.0/13 1.202.0.0/15 14.144.0.0/12 14.208.0.0/12 27.8.0.0/13 27.16.0.0/12 27.36.0.0/14 27.40.0.0/13 27.54.192.0/18 27.106.128.0/18 27.115.0.0/17 27.152.0.0/13 27.184.0.0/13 36.248.0.0/14 42.96.128.0/17 58.16.0.0/15 58.20.0.0/16 58.21.0.0/16 58.22.0.0/15 58.34.0.0/16 58.37.0.0/16 58.38.0.0/16 58.40.0.0/16 58.42.0.0/16 58.44.0.0/14 58.48.0.0/13 58.56.0.0/15 58.58.0.0/16 58.59.0.0/17 58.60.0.0/14 58.68.128.0/17 58.82.0.0/15 58.100.0.0/15 58.208.0.0/12 58.242.0.0/15 58.246.0.0/15 58.248.0.0/13 59.32.0.0/13 59.40.0.0/15 59.42.0.0/16 59.44.0.0/14 59.51.0.0/16 59.52.0.0/14 59.56.0.0/13 59.72.0.0/16 59.108.0.0/15 59.174.0.0/15 60.0.0.0/13 60.11.0.0/16 60.12.0.0/16 60.24.0.0/13 60.160.0.0/11 60.194.0.0/15 60.208.0.0/13 60.216.0.0/15 60.220.0.0/14 61.4.64.0/20 61.4.80.0/22 61.4.176.0/20 61.48.0.0/13 61.128.0.0/10 61.135.0.0/16 61.136.0.0/18 61.139.0.0/16 61.145.73.208/28 61.147.0.0/16 61.152.0.0/16 61.154.0.0/16 61.160.0.0/16 61.162.0.0/15 61.164.0.0/16 61.175.0.0/16 61.177.0.0/16 61.179.0.0/16 61.183.0.0/16 61.184.0.0/16 61.185.219.232/29 61.187.0.0/16 61.188.0.0/16 61.191.0.0/16 61.232.0.0/14 61.236.0.0/15 61.240.0.0/14 110.6.0.0/15 110.51.0.0/16 110.52.0.0/15 110.80.0.0/13 110.88.0.0/14 110.96.0.0/11 110.173.0.0/19 110.173.32.0/20 110.173.64.0/18 110.192.0.0/11 110.240.0.0/12 111.0.0.0/10 111.72.0.0/13 111.128.0.0/11 111.160.0.0/13 111.172.0.0/14 111.176.0.0/13 111.228.0.0/14 112.0.0.0/10 112.64.0.0/14 112.80.0.0/12 112.100.0.0/14 112.111.0.0/16 112.224.0.0/11 113.0.0.0/13 113.8.0.0/15 113.12.0.0/14 113.16.0.0/15 113.18.0.0/16 113.62.0.0/15 113.64.0.0/10 113.128.0.0/15 113.136.0.0/13 113.204.0.0/14 114.28.0.0/16 114.80.0.0/12 114.104.0.0/14 114.112.0.0/14 114.216.0.0/13 114.224.0.0/11 115.24.0.0/15 115.32.0.0/14 115.48.0.0/12 115.84.0.0/18 115.100.0.0/15 115.148.0.0/14 115.168.0.0/14 115.212.0.0/16 115.239.228.0/22 116.1.0.0/16 116.2.0.0/15 116.4.0.0/14 116.8.0.0/14 116.16.0.0/12 116.52.0.0/14 116.76.0.0/15 116.90.80.0/20 116.112.0.0/14 116.128.0.0/10 116.204.0.0/15 116.208.0.0/14 116.254.128.0/18 117.21.0.0/16 117.22.0.0/15 117.24.0.0/13 117.32.0.0/13 117.40.0.0/14 117.44.0.0/15 117.79.224.0/20 117.80.0.0/12 118.72.0.0/13 118.112.0.0/13 118.120.0.0/14 118.132.0.0/14 118.144.0.0/14 118.180.0.0/14 118.186.0.0/15 118.192.0.0/16 118.248.0.0/13 119.0.0.0/13 119.8.0.0/15 119.10.0.0/17 119.18.192.0/20 119.57.0.0/16 119.60.0.0/16 119.88.0.0/14 119.96.0.0/13 119.112.0.0/13 119.120.0.0/13 119.128.0.0/12 119.144.0.0/14 119.164.0.0/14 119.176.0.0/12 120.0.0.0/12 120.24.0.0/14 120.32.0.0/13 120.40.0.0/14 120.68.0.0/14 120.192.0.0/10 121.0.16.0/20 121.8.0.0/13 121.16.0.0/12 121.32.0.0/14 121.60.0.0/14 121.76.0.0/15 121.204.0.0/14 121.224.0.0/12 122.51.128.0/17 122.64.0.0/11 122.119.0.0/16 122.136.0.0/13 122.156.0.0/14 122.188.0.0/14 122.192.0.0/14 122.198.0.0/16 122.200.64.0/18 122.224.0.0/12 123.4.0.0/14 123.8.0.0/13 123.52.0.0/14 123.64.0.0/11 123.97.128.0/17 123.100.0.0/19 123.112.0.0/12 123.128.0.0/13 123.150.0.0/15 123.152.0.0/13 123.164.0.0/14 123.184.0.0/14 123.196.0.0/15 123.232.0.0/14 124.42.64.0/18 124.64.0.0/15 124.67.0.0/16 124.114.0.0/15 124.126.0.0/15 124.128.0.0/13 124.160.0.0/16 124.163.0.0/16 124.192.0.0/15 124.200.0.0/13 124.226.0.0/15 124.228.0.0/14 124.236.0.0/14 124.240.0.0/17 124.240.128.0/18 124.248.0.0/17 125.40.0.0/13 125.64.0.0/12 125.79.0.0/16 125.80.0.0/13 125.88.0.0/13 125.104.0.0/13 125.112.0.0/12 159.226.0.0/16 175.0.0.0/12 175.16.0.0/13 175.24.0.0/14 175.30.0.0/15 175.42.0.0/15 175.44.0.0/16 175.46.0.0/15 175.48.0.0/12 175.64.0.0/11 175.102.0.0/16 175.106.128.0/17 175.146.0.0/15 175.148.0.0/14 175.152.0.0/14 175.160.0.0/12 175.178.0.0/16 175.184.128.0/18 175.185.0.0/16 175.186.0.0/15 175.188.0.0/14 180.76.0.0/16 180.96.0.0/11 180.136.0.0/13 180.152.0.0/13 180.208.0.0/15 182.18.0.0/17 182.112.0.0/12 183.0.0.0/10 192.74.224.0/19 221.204.0.0/15 202.43.144.0/22 202.46.32.0/19 202.66.0.0/16 202.96.0.0/12 202.111.160.0/19 202.112.0.0/14 202.117.0.0/16 202.165.176.0/20 202.196.80.0/20 203.69.0.0/16 203.86.0.0/18 203.86.64.0/19 203.93.0.0/16 203.169.160.0/19 210.5.0.0/19 210.14.128.0/19 210.21.0.0/16 210.32.0.0/14 210.51.0.0/16 210.52.0.0/15 210.192.96.0/19 211.76.96.0/20 211.78.208.0/20 211.86.144.0/20 211.90.0.0/15 211.92.0.0/14 211.96.0.0/13 211.136.0.0/13 211.144.12.0/22 211.144.96.0/19 211.144.160.0/20 211.147.208.0/20 211.147.224.0/23 211.152.14.0/24 211.154.64.0/19 211.154.128.0/19 211.155.24.0/22 211.157.32.0/19 211.160.0.0/13 211.233.70.0/24 218.0.0.0/11 218.56.0.0/13 218.64.0.0/11 218.88.0.0/13 218.96.0.0/14 218.102.0.0/16 218.104.0.0/14 218.108.0.0/15 218.194.80.0/20 218.200.0.0/13 218.240.0.0/13 219.128.0.0/11 219.223.192.0/18 219.232.0.0/16 219.234.80.0/20 219.154.0.0/15 220.112.0.0/16 220.154.0.0/15 220.160.0.0/11 220.181.0.0/16 220.192.0.0/12 220.228.70.0/24 220.248.0.0/14 220.250.0.0/19 220.252.0.0/16 221.0.0.0/12 221.122.0.0/15 221.176.0.0/13 221.192.0.0/14 221.200.0.0/14 221.204.0.0/15 221.206.0.0/16 221.207.0.0/16 221.208.0.0/12 221.212.0.0/16 221.214.0.0/15 221.216.0.0/13 221.224.0.0/13 221.228.0.0/14 221.232.0.0/13 222.32.0.0/11 222.64.0.0/12 222.80.0.0/12 222.132.0.0/14 222.136.0.0/13 222.168.0.0/13 222.172.222.0/24 222.176.0.0/13 222.184.0.0/13 222.208.0.0/13 222.241.0.0/19 222.245.0.0/16 223.4.0.0/14 223.64.0.0/11

# Hong Kong (HK)
deny from 58.65.232.0/21 59.148.0.0/15 110.173.48.0/20 112.121.160.0/19 113.252.0.0/14 118.140.0.0/14 121.127.224.0/19 123.242.229.0/24 147.8.0.0/16 180.235.134.0/24 202.69.64.0/19 202.85.128.0/19 202.133.8.0/21 203.198.0.0/16 203.218.0.0/16 210.176.0.0/19 210.176.48.0/20 210.176.64.0/18 210.176.128.0/17 210.177.0.0/16 218.103.0.0/16 218.252.0.0/14 219.76.0.0/14 222.166.0.0/16 223.16.0.0/14

# India (IN), Bangladesh (BD) and Pakistan (PK)
deny from 14.96.0.0/14 14.194.0.0/15 27.255.0.0/18 27.255.128.0/24 39.32.0.0/11 49.15.0.0/18 49.200.0.0/14 49.248.0.0/17 59.88.0.0/13 59.96.0.0/14 59.160.0.0/14 59.164.0.0/15 9.176.0.0/13 59.184.0.0/15 61.247.238.0/24 101.56.0.0/13 112.110.0.0/16 113.19.0.0/16 113.212.64.0/19 114.31.224.0/20 115.108.0.0/14 115.167.24.0/24 115.240.0.0/12 116.72.0.0/14 116.202.12.0/22 116.203.32.0/19 116.203.64.0/19 117.192.0.0/10 119.152.0.0/13 119.160.0.0/17 120.56.0.0/13 120.138.98.0/24 121.240.0.0/13 122.160.0.0/12 122.176.0.0/13 122.184.0.0/14 123.49.0.0/18 123.236.0.0/14 124.124.0.0/15 124.247.235.0/24 124.253.8.0/21 125.209.64.0/18 139.190.0.0/16 182.64.0.0/12 182.176.0.0/12 183.82.0.0/15 193.53.87.0/24 202.54.0.0/16 202.63.160.0/19 202.87.240.0/20 202.137.232.0/21 202.154.224.0/24 203.76.176.0/20 203.92.47.0/24 203.115.80.0/20 203.135.62.0/24 203.188.247.0/24 203.192.231.0/24 203.197.0.0/16 206.214.208.0/20 210.211.128.0/17 210.212.64.0/20 218.248.0.0/20

# Indonesia (ID)
deny from 49.50.4.0/22 49.50.8.0/22 110.136.176.0/20 110.139.0.0/16 114.79.18.0/24 116.12.40.0/21 116.66.200.0/21 116.254.96.0/21 118.96.0.0/15 119.110.68.0/24 119.235.16.0/20 119.252.162.0/24 120.160.0.0/11 124.6.36.0/22 124.195.124.0/24 125.164.64.0/19 125.165.128.0/18 139.192.0.0/14 180.241.128.0/17 180.242.0.0/16 180.248.128.0/18 180.249.0.0/16 180.251.0.0/20 202.57.0.0/19 203.130.192.0/18

# Japan (JP) (hacking, scraping, or spamming)
deny from 27.50.96.0/19 36.52.0.0/14 42.83.0.0/18 58.188.0.0/14 59.146.0.0/15 61.112.0.0/12 118.0.0.0/12 118.86.0.0/15 118.106.0.0/16 122.200.192.0/18 122.208.0.0/12 123.216.0.0/13 124.84.0.0/14 126.0.0.0/8 150.70.84.41 210.248.0.0/13 211.19.0.0/16 218.216.0.0/13 218.224.0.0/13 219.94.128.0/17 219.96.0.0/11 220.104.0.0/13 220.208.0.0/12 221.121.160.0/20 222.231.64.0/18 222.231.128.0/17 222.144.0.0/13 223.216.0.0/14

# Korea (KR) IP addresses follow:
deny from 14.32.0.0/11 14.64.0.0/11 27.115.128.0/17 27.255.64.0/18 58.72.0.0/13 58.120.0.0/13 58.140.0.0/14 58.148.0.0/14 58.180.40.0/21 58.224.0.0/12 59.0.0.0/11 59.86.192.0/18 59.186.0.0/15 61.32.0.0/13 61.40.0.0/14 61.72.0.0/13 61.80.0.0/15 61.96.0.0/12 61.110.16.0/20 61.248.0.0/13 110.8.0.0/13 110.45.0.0/16 112.144.0.0/12 112.160.0.0/11 112.216.0.0/13 113.30.64.0/18 114.29.0.0/17 114.108.128.0/18 114.200.0.0/13 115.0.0.0/12 115.16.0.0/13 115.40.0.0/15 115.68.0.0/16 115.88.0.0/13 116.40.0.0/16 116.45.176.0/20 116.93.192.0/19 116.120.0.0/13 117.110.0.0/15 118.32.0.0/11 118.128.0.0/14 118.216.0.0/13 119.64.0.0/13 119.192.0.0/11 120.50.64.0/18 121.88.0.0/16 121.101.224.0/19 121.127.64.0/18 121.127.128.0/18 121.128.0.0/10 121.254.0.0/16 122.44.112.0/20 122.99.128.0/17 123.111.0.0/16 123.140.0.0/14 123.212.0.0/14 123.248.0.0/16 124.0.0.0/15 124.50.87.161 124.136.0.0/14 124.217.192.0/19 125.128.0.0/11 125.176.0.0/12 125.240.0.0/13 125.248.0.0/14 143.248.0.0/16 166.104.0.0/16 168.188.0.0/16 175.112.0.0/12 180.64.0.0/13 180.224.0.0/13 202.30.0.0/15 202.133.16.0/20 202.179.176.0/21 203.226.0.0/15 203.228.0.0/14 203.244.0.0/14 203.248.0.0/13 210.93.0.0/16 210.94.0.0/15 210.108.0.0/14 210.112.0.0/14 210.117.128.0/18 210.118.216.192/26 210.124.0.0/14 210.178.0.0/15 210.180.0.0/15 210.204.0.0/15 210.210.192.0/18 210.219.0.0/16 210.220.0.0/14 211.32.0.0/12 211.48.0.0/15 211.50.0.0/15 211.52.0.0/16 211.62.35.0/24 211.104.0.0/13 211.112.0.0/13 211.168.0.0/13 211.176.0.0/12 211.192.0.0/12 211.208.0.0/14 211.216.0.0/13 211.224.0.0/13 211.232.0.0/13 211.240.0.0/12 218.36.0.0/14 218.48.0.0/13 218.144.0.0/12 218.209.0.0/16 218.232.0.0/14 218.236.0.0/14 219.240.0.0/15 219.248.0.0/13 219.250.88.0/21 220.72.0.0/13 220.80.0.0/13 220.95.88.0/24 220.118.0.0/16 220.119.0.0/16 221.128.0.0/12 221.144.0.0/12 221.160.0.0/13 221.168.0.0/16 221.163.46.0/24 222.96.0.0/12 222.112.0.0/13 222.120.0.0/15 222.122.0.0/16 222.231.0.0/18 222.232.0.0/13

# Yahoo-Korea (provides free email services used by some spammers)
deny from 123.0.0.0/20

# Neighboring Asian countries:

# Malaysia (MY)
deny from 27.131.32.0/24 60.48.0.0/14 60.52.0.0/15 60.54.0.0/16 110.159.0.0/16 112.137.160.0/20 113.23.128.0/17 115.132.0.0/14 116.197.0.0/17 116.206.0.0/16 118.100.0.0/15 119.110.96.0/20 120.50.48.0/20 120.140.0.0/15 124.82.0.0/16 124.217.224.0/19 161.139.0.0/16 175.136.0.0/13 180.72.0.0/14 202.58.80.0/20 202.71.96.0/20 202.75.32.0/19 202.190.0.0/16 203.106.0.0/16 203.217.176.0/22 203.223.128.0/19 210.187.49.0/25 218.111.0.0/16 218.208.12.64/27

# Philippines (PH)
deny from 27.110.144.0/20 85.92.152.0/21 110.5.64.0/21 111.235.80.0/20 112.201.128.0/17 112.202.0.0/16 120.28.64.0/18 122.54.125.73 125.60.128.0/17 125.212.56.0/22 180.193.64.0/19 202.52.54.0/23 202.133.192.0/24 202.146.184.0/23 222.127.32.0/19 222.127.64.0/19

# Singapore (SG)
deny from 58.185.18.0/28 59.189.0.0/16 116.12.48.0/21 116.14.0.0/15 116.251.223.0/24 121.6.0.0/15 165.21.0.0/16 180.210.200.0/21 182.23.147.0/24 192.169.40.0/23 203.92.64.0/18 203.117.0.0/24 218.186.0.0/16 218.212.0.0/16 219.74.0.0/15 219.75.0.0/17

# Taiwan (TW)
deny from 1.160.0.0/12 1.200.0.0/16 36.224.0.0/12 59.124.0.0/14 60.198.0.0/15 60.249.0.0/16 60.250.0.0/15 61.31.0.0/16 61.59.0.0/16 61.63.0.0/16 61.67.128.0/17 61.216.0.0/14 61.220.0.0/14 61.224.0.0/14 61.228.0.0/14 110.24.0.0/13 110.50.128.0/18 111.240.0.0/12 114.24.0.0/14 114.32.0.0/12 115.80.0.0/14 115.85.144.0/20 117.19.0.0/16 118.160.0.0/13 122.116.0.0/15 122.118.0.0/16 122.120.0.0/13 122.254.0.0/18 123.51.128.0/17 123.240.0.0/15 124.8.0.0/14 125.224.0.0/13 140.109.0.0/16 140.110.0.0/15 140.112.0.0/12 140.128.0.0/13 140.136.0.0/15 140.138.0.0/16 163.13.0.0/16 163.14.0.0/15 163.16.0.0/12 163.24.0.0/16 163.32.0.0/16 175.96.0.0/14 203.64.0.0/14 203.71.0.0/16 203.72.0.0/16 210.59.0.0/17 210.200.0.0/15 210.240.0.0/16 211.20.0.0/15 211.23.0.0/16 211.75.0.0/16 211.76.160.0/20 211.79.32.0/20 218.160.0.0/12 219.84.0.0/15 219.90.3.0/24 220.128.0.0/12

# Thailand (TH)
deny from 1.46.0.0/15 58.8.0.0/16 58.9.0.0/16 58.10.0.0/16 58.137.0.0/16 61.19.0.0/16 61.47.0.0/17 113.53.0.0/17 115.87.128.0/17 117.47.0.0/16 118.172.0.0/14 122.154.0.0/15 123.242.128.0/18 124.120.0.0/16 124.121.0.0/16 124.122.0.0/16 125.25.0.0/19 171.97.128.0/17 202.28.0.0/15 202.44.135.0/24 202.133.128.0/18 202.142.192.0/19 202.143.128.0/18 203.107.142.0/24 203.113.0.0/17 203.130.149.0/24 203.144.128.0/17 203.146.0.0/16 203.148.128.0/17 203.149.0.0/18 203.150.128.0/17 203.151.38.0/24 203.155.0.0/16 203.158.96.0/19 203.158.128.0/17 203.170.193.0/24 203.172.128.0/17 203.185.128.0/19 210.213.0.0/18 222.123.0.0/16 223.205.0.0/16 223.207.0.0/16

# Vietnam (VN)
deny from 1.52.112.0/20 42.112.0.0/13 58.186.0.0/16 58.187.96.0/20 58.187.112.0/20 112.78.0.0/20 112.197.0.0/16 112.213.80.0/20 113.22.0.0/16 113.23.0.0/17 113.160.0.0/11 115.72.0.0/13 115.84.176.0/22 116.96.0.0/12 117.0.0.0/13 118.68.0.0/14 123.16.0.0/12 125.234.0.0/15 171.224.0.0/11 175.100.64.0/20 183.80.0.0/16 183.81.0.0/17 183.91.0.0/19 202.78.227.0/24 203.113.128.0/18 203.162.0.0/16 203.210.192.0/18 210.211.96.0/19 210.245.80.0/21 220.231.124.0/22 222.252.0.0/14

# End Chinese-Korean blocklist

# Add other blocked domain names or IP addresses here, starting with “deny from ” without quotes

# If you find that you need to poke a hole in the blocklist, for legitimate visitors, follow this example: allow from 123.456.789.0

# Add “allow from” IP addresses, or CIDR Ranges, after all of the “deny from” items, just before the closing Files tag.

# Everything not included within these deny from ranges is PERMITTED by the allow portion of the directive.

</Files>