[CentOS] could not resolve mirrorlist.centos.org

Tue May 15 16:01:59 UTC 2018
m.roth at 5-cent.us <m.roth at 5-cent.us>

Hi, folks,

   I've got managers on me, I'm rebuilding this system as C 7... and I'm
getting the above. No idea. It pings, but pointing a browser to  there
gives me "invalid release".

   Anyone else having trouble?