http://repo.boun.edu.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://repo.boun.edu.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.alastyr.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.alastyr.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://ftp.linux.org.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.linux.org.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://centos.vargonen.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://centos.vargonen.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://centos.turhost.com/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://centos.turhost.com/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://ftp.itu.edu.tr/Mirror/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.itu.edu.tr/Mirror/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.ni.net.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.ni.net.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.hosting.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.hosting.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://denizli.centos-mirror.guzel.net.tr/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://denizli.centos-mirror.guzel.net.tr/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.saglayici.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.saglayici.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.fibersunucu.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.fibersunucu.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.rackdc.com/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.rackdc.com/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.bursabil.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.bursabil.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://istanbul.centos-mirror.guzel.net.tr/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://istanbul.centos-mirror.guzel.net.tr/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.idealhosting.net.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.idealhosting.net.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.muvhost.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.muvhost.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.netdirekt.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.netdirekt.com.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://kozyatagi.mirror.guzel.net.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://kozyatagi.mirror.guzel.net.tr/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.radoreservers.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.radoreservers.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.veganet.com.tr/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.veganet.com.tr/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
Other mirrors further away:
http://ftp.otenet.gr/linux/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.otenet.gr/linux/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://ftp.cc.uoc.gr/mirrors/linux/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.cc.uoc.gr/mirrors/linux/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://ftp.ntua.gr/pub/linux/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.ntua.gr/pub/linux/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://it.centos.contactlab.it/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://it.centos.contactlab.it/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://centos.mirror.garr.it/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://centos.mirror.garr.it/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirrors.prometeus.net/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirrors.prometeus.net/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.crazynetwork.it/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.crazynetwork.it/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://mirror.23media.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://mirror.23media.com/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://ftp.wrz.de/pub/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.wrz.de/pub/CentOS/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
http://ftp.rrzn.uni-hannover.de/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso (http://ftp.rrzn.uni-hannover.de/centos/8-stream/isos/x86_64/CentOS-Stream-x86_64-dvd1.iso)
+ others, see the full list of mirrors: https://www.centos.org/download/mirrors/ (https://www.centos.org/download/mirrors/)