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

http://mirrors.usinternet.com/centos/8-stream/isos/x86_64/
http://mirror.vtti.vt.edu/centos/8-stream/isos/x86_64/
http://mirror.phx1.us.spryservers.net/centos/8-stream/isos/x86_64/
http://mirror.hostduplex.com/centos/8-stream/isos/x86_64/
http://mirror.arizona.edu/centos/8-stream/isos/x86_64/
http://mirror.us-midwest-1.nexcess.net/CentOS/8-stream/isos/x86_64/
http://bay.uchicago.edu/centos/8-stream/isos/x86_64/
http://centos.host-engine.com/8-stream/isos/x86_64/
http://mirror.mi.incx.net/centos/8-stream/isos/x86_64/
http://mirror.us.oneandone.net/linux/distributions/centos/8-stream/isos/x86_64/
http://mirror.atlanticmetro.net/centos/8-stream/isos/x86_64/
http://centos.mirror.constant.com/8-stream/isos/x86_64/
http://mirror.ash.fastserv.com/centos/8-stream/isos/x86_64/
http://mirror.sjc02.svwh.net/centos/8-stream/isos/x86_64/
http://repos.mia.quadranet.com/centos/8-stream/isos/x86_64/
http://mirror.keystealth.org/centos/8-stream/isos/x86_64/
http://mirror.sesp.northwestern.edu/centos/8-stream/isos/x86_64/
http://mirror.genesishosting.com/centos/8-stream/isos/x86_64/
http://mirrors.tripadvisor.com/centos/8-stream/isos/x86_64/
http://mirror.vcu.edu/pub/gnu_linux/centos/8-stream/isos/x86_64/
http://yum.tamu.edu/centos/8-stream/isos/x86_64/
http://mirror.chpc.utah.edu/pub/centos/8-stream/isos/x86_64/
http://repo1.sea.innoscale.net/centos/8-stream/isos/x86_64/
http://mirrors.xtom.com/centos/8-stream/isos/x86_64/
http://mirrors.gigenet.com/centos/8-stream/isos/x86_64/
http://mirror.twinlakes.net/centos/8-stream/isos/x86_64/
http://centos-distro.cavecreek.net/centos/8-stream/isos/x86_64/
http://mirror.ette.biz/centos/8-stream/isos/x86_64/
http://mirror.linux.duke.edu/pub/centos/8-stream/isos/x86_64/
http://mirror.ilumno.com/centos/8-stream/isos/x86_64/
+ others, see the full list of mirrors: https://www.centos.org/download/mirrors/

Mirrors verified Tue Jan 19 22:23:51 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