Hi, we have updated the mirror at UChicago, it now has a new IP address. Please see below:

HTTP: http://mirror.grid.uchicago.edu/pub/linux/centos/

Sync schedule: Every 6 hours
Bandwidth: 10 Gbps
Location: Chicago, IL
Sponsor: University of Chicago
Sponsor URL: https://www.uchicago.edu/
IPv4 address to authorize: 128.135.235.254
Email contact: lincolnb@uchicago.edu
Mirroring AltArch  : no

Thanks,

Lincoln