In order to conserve the limited bandwidth available, ISO images are not downloadable from mirror.centos.org

http://mirror.cogentco.com/pub/linux/centos/8-stream/isos/ppc64le/
http://mirror.ash.fastserv.com/centos/8-stream/isos/ppc64le/
http://mirror.vtti.vt.edu/centos/8-stream/isos/ppc64le/
http://us.mirror.nsec.pt/centos/8-stream/isos/ppc64le/
http://mirror.vcu.edu/pub/gnu_linux/centos/8-stream/isos/ppc64le/
http://mirrors.advancedhosters.com/centos/8-stream/isos/ppc64le/
http://mirror.cs.vt.edu/pub/CentOS/8-stream/isos/ppc64le/
http://mirror.centos.iad1.serverforge.org/8-stream/isos/ppc64le/

http://mirror.nodesdirect.com/centos/8-stream/isos/ppc64le/
http://mirrors.unifiedlayer.com/centos/8-stream/isos/ppc64le/
http://mirror.genesisadaptive.com/centos/8-stream/isos/ppc64le/
http://linux.cc.lehigh.edu/centos/8-stream/isos/ppc64le/
http://mirror.hostduplex.com/centos/8-stream/isos/ppc64le/
http://mirror.ilumno.com/centos/8-stream/isos/ppc64le/
http://centos.mirror.lstn.net/8-stream/isos/ppc64le/
http://atl.mirrors.clouvider.net/CentOS/8-stream/isos/ppc64le/
http://centos.s.uw.edu/centos/8-stream/isos/ppc64le/
http://centos.mirror.ndchost.com/8-stream/isos/ppc64le/
http://mirror.ette.biz/centos/8-stream/isos/ppc64le/
http://mirror.dal10.us.leaseweb.net/centos/8-stream/isos/ppc64le/
http://mirrors.gigenet.com/centos/8-stream/isos/ppc64le/
http://distro.ibiblio.org/centos/8-stream/isos/ppc64le/
http://mirror.keystealth.org/centos/8-stream/isos/ppc64le/
http://mirror.netdepot.com/centos/8-stream/isos/ppc64le/
http://mirrors.seas.harvard.edu/centos/8-stream/isos/ppc64le/
http://mirror.pit.teraswitch.com/centos/8-stream/isos/ppc64le/
http://mirrors.liquidweb.com/CentOS/8-stream/isos/ppc64le/
http://mirror.vacares.com/centos/8-stream/isos/ppc64le/
http://yum.tamu.edu/centos/8-stream/isos/ppc64le/
http://centos.mirror.shastacoe.net/centos/8-stream/isos/ppc64le/
+ others, see the full list of mirrors: https://www.centos.org/download/mirrors/

Mirrors verified Fri Sep 17 06:07:04 2021 UTC

You can also download the ISO images using bittorrent, a peer-to-peer file sharing protocol. The .torrent files can be found from CentOS mirrors. Various bittorrent clients are available, including (in no particular order of preference): utorrent, vuze (Azureus), BitTorrent, Deluge, ctorrent, ktorrent, rtorrent and transmission. Packaged copies of various torrent clients for CentOS can be found in the repositories listed in the following wiki article: https://wiki.centos.org/AdditionalResources/Repositories