Look for AdGuard Pro or AdBlock need 127.0.0.1 lb.usemaxserver.de
Refer: https://appleiphonemod.blogspot.com/2018/05/system-wide-blocking-in-adblock-for-ios.html?m=1
https://goo.gl/rs8xDQ
https://raw.githubusercontent.com/Twanthegreat/Adblockios/master/updatedAdBlockRulesv4.1.txt
Refer: https://www.reddit.com/r/ios/comments/7faeqz/dns_list_for_adblock_futuremind/
Refer: https://github.com/AdAway/AdAway/wiki/hostssources
https://adaway.org/hosts.txt
Refer: https://github.com/BlackJack8/iOSAdblockList
https://github.com/BlackJack8/iOSAdblockList/blob/master/iPv4Hosts.txt