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

http://la.mirrors.clouvider.net/CentOS/8-stream/isos/aarch64/
http://mirror.linux.duke.edu/pub/centos/8-stream/isos/aarch64/
http://mirror.sfo12.us.leaseweb.net/centos/8-stream/isos/aarch64/
http://repo1.sea.innoscale.net/centos/8-stream/isos/aarch64/
http://nyc.mirrors.clouvider.net/CentOS/8-stream/isos/aarch64/
http://mirror.sesp.northwestern.edu/centos/8-stream/isos/aarch64/
http://ewr.edge.kernel.org/centos/8-stream/isos/aarch64/
http://mirror.genesishosting.com/centos/8-stream/isos/aarch64/
http://reflector.westga.edu/repos/CentOS/8-stream/isos/aarch64/
http://mirror.umd.edu/centos/8-stream/isos/aarch64/
http://mirrors.cat.pdx.edu/centos/8-stream/isos/aarch64/
http://mirrors.tummy.com/mirrors/CentOS/8-stream/isos/aarch64/
http://mirrors.unifiedlayer.com/centos/8-stream/isos/aarch64/
http://mirrors.rcs.alaska.edu/centos/8-stream/isos/aarch64/
http://mirrors.umflint.edu/CentOS/8-stream/isos/aarch64/
http://mirror.jaleco.com/centos/8-stream/isos/aarch64/
http://centos5.zswap.net/8-stream/isos/aarch64/
http://mirror.arizona.edu/centos/8-stream/isos/aarch64/
http://repos.dfw.quadranet.com/centos/8-stream/isos/aarch64/
http://repos.lax.quadranet.com/centos/8-stream/isos/aarch64/
http://mirrors.maine.edu/CentOS/8-stream/isos/aarch64/
http://mirror.team-cymru.com/CentOS/8-stream/isos/aarch64/
http://mirrors.oit.uci.edu/centos/8-stream/isos/aarch64/
http://mirrors.tripadvisor.com/centos/8-stream/isos/aarch64/
http://centos.mirrors.hoobly.com/8-stream/isos/aarch64/
http://mirrors.mit.edu/centos/8-stream/isos/aarch64/
http://repos.mia.quadranet.com/centos/8-stream/isos/aarch64/
http://mirror.sjc02.svwh.net/centos/8-stream/isos/aarch64/
http://mirror.atlanticmetro.net/centos/8-stream/isos/aarch64/
http://mirror.web-ster.com/centos/8-stream/isos/aarch64/
+ others, see the full list of mirrors: https://www.centos.org/download/mirrors/

Mirrors verified Wed Nov 11 16:15:44 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