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

http://mirror.ash.fastserv.com/centos/7.9.2009/isos/x86_64/
http://mirrors.advancedhosters.com/centos/7.9.2009/isos/x86_64/
http://mirror.vcu.edu/pub/gnu_linux/centos/7.9.2009/isos/x86_64/
http://mirror.cogentco.com/pub/linux/centos/7.9.2009/isos/x86_64/
http://forksystems.mm.fcix.net/centos/7.9.2009/isos/x86_64/
http://mirror.vtti.vt.edu/centos/7.9.2009/isos/x86_64/
http://mirror.cs.vt.edu/pub/CentOS/7.9.2009/isos/x86_64/

http://mirror.genesishosting.com/centos/7.9.2009/isos/x86_64/
http://tx-mirror.tier.net/centos/7.9.2009/isos/x86_64/
http://atl.mirrors.clouvider.net/CentOS/7.9.2009/isos/x86_64/
http://mirror.facebook.net/centos/7.9.2009/isos/x86_64/
http://mirrors.cmich.edu/centos/7.9.2009/isos/x86_64/
http://mirror.math.princeton.edu/pub/centos/7.9.2009/isos/x86_64/
http://repo1.sea.innoscale.net/centos/7.9.2009/isos/x86_64/
http://mirror.rackspace.com/CentOS/7.9.2009/isos/x86_64/
http://centos-distro.1gservers.com/7.9.2009/isos/x86_64/
http://volico.mm.fcix.net/centos/7.9.2009/isos/x86_64/
http://mirror.cs.pitt.edu/centos/7.9.2009/isos/x86_64/
http://repos.lax.layerhost.com/centos/7.9.2009/isos/x86_64/
http://mirror.clarkson.edu/centos/7.9.2009/isos/x86_64/
http://nyc.mirrors.clouvider.net/CentOS/7.9.2009/isos/x86_64/
http://centos-distro.cavecreek.net/centos/7.9.2009/isos/x86_64/
http://ftpmirror.your.org/pub/centos/7.9.2009/isos/x86_64/
http://coresite.mm.fcix.net/centos/7.9.2009/isos/x86_64/
http://or-mirror.iwebfusion.net/centos/7.9.2009/isos/x86_64/
http://mirror.atl.genesisadaptive.com/centos/7.9.2009/isos/x86_64/
http://ridgewireless.mm.fcix.net/centos/7.9.2009/isos/x86_64/
http://mirrors.rit.edu/centos/7.9.2009/isos/x86_64/
http://mirror.us-midwest-1.nexcess.net/CentOS/7.9.2009/isos/x86_64/
http://ix-denver.mm.fcix.net/centos/7.9.2009/isos/x86_64/
+ others, see the full list of mirrors: https://www.centos.org/download/mirrors/

Mirrors verified Wed Sep 27 15:18:02 2023 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