This is a project that includes both a repository and bash script to maintain blocklists for DNS web filtering.
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/current/porn.list
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/current/dating.list
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/current/drugs.list
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/current/proxy.list
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/current/violence.list
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/current/sexual_education.list
https://media.githubusercontent.com/media/wiggels/filtering-blocklists/master/lists/static/games.list
filtering-blocklists is released under the terms of MIT License. For more details take a look at the LICENSE.