http://glua.ua.pt/pub/ubuntu/ https://mirrors.ptisp.pt/ubuntu/ http://cesium.di.uminho.pt/pub/ubuntu-archive/ http://mirrors.up.pt/ubuntu/ http://ftp.rnl.tecnico.ulisboa.pt/pub/ubuntu/archive/ http://archive.ubuntumirror.dei.uc.pt/ubuntu/ https://mirror.leitecastro.com/ubuntu/ http://archive.ubuntu.com/ubuntu/