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

http://us.mirror.nsec.pt/centos/8-stream/isos/x86_64/
http://mirror.ash.fastserv.com/centos/8-stream/isos/x86_64/
http://mirror.vcu.edu/pub/gnu_linux/centos/8-stream/isos/x86_64/
http://repo1.ash.innoscale.net/centos/8-stream/isos/x86_64/
http://mirror.cs.vt.edu/pub/CentOS/8-stream/isos/x86_64/
http://centos4.zswap.net/8-stream/isos/x86_64/
http://repos-va.psychz.net/centos/8-stream/isos/x86_64/
http://mirror.vtti.vt.edu/centos/8-stream/isos/x86_64/
http://mirror.cogentco.com/pub/linux/centos/8-stream/isos/x86_64/
http://mirrors.advancedhosters.com/centos/8-stream/isos/x86_64/

http://centos.mirrors.hoobly.com/8-stream/isos/x86_64/
http://distro.ibiblio.org/centos/8-stream/isos/x86_64/
http://mirror.lug.udel.edu/pub/centos/8-stream/isos/x86_64/
http://centos-distro.1gservers.com/8-stream/isos/x86_64/
http://mirror.netdepot.com/centos/8-stream/isos/x86_64/
http://mirror.grid.uchicago.edu/pub/linux/centos/8-stream/isos/x86_64/
http://mirror.us.oneandone.net/linux/distributions/centos/8-stream/isos/x86_64/
http://mirrors.codec-cluster.org/centos/8-stream/isos/x86_64/
http://mirrors.xtom.com/centos/8-stream/isos/x86_64/
http://mirror.trouble-free.net/centos/8-stream/isos/x86_64/
http://mirror.genesishosting.com/centos/8-stream/isos/x86_64/
http://mirrors.raystedman.org/centos/8-stream/isos/x86_64/
http://centos.mirror.lstn.net/8-stream/isos/x86_64/
http://mirror.pit.teraswitch.com/centos/8-stream/isos/x86_64/
http://ftpmirror.your.org/pub/centos/8-stream/isos/x86_64/
http://mirrors.unifiedlayer.com/centos/8-stream/isos/x86_64/
http://mirrors.cat.pdx.edu/centos/8-stream/isos/x86_64/
http://repo.miserver.it.umich.edu/centos/8-stream/isos/x86_64/
http://mirror.sesp.northwestern.edu/centos/8-stream/isos/x86_64/
http://mirrors.mit.edu/centos/8-stream/isos/x86_64/
+ others, see the full list of mirrors: https://www.centos.org/download/mirrors/

Mirrors verified Wed Jan 22 14:57:33 2020 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