Hello Fabian,
We have a new public mirror for announcement:

HTTP: http://mirror.hostduplex.com/centos/
FTP: ftp://mirror.hostduplex.com/centos/
RSYNC: rsync://mirror.hostduplex.com/centos/

Sync schedule: Every 6 hrs
Bandwidth: 10 Gbps
Location: Los Angeles, California, USA
Sponsor:  Host Duplex, LLC
Sponsor URL: http://www.hostduplex.com
IP to authorize: 104.219.172.11 and 2605:b780::2 and 104.219.172.10
Email contact: sam.jadali@hostduplex.com

Thank you and please let me know if you have any questions.

Regards,
Sam