I'm not sure if this is the right place, but I used the contact form twice back in august and september and haven't received any reply The mirror list on the github page is not updated either
Anyway, as a raspberry pi lover, I've set up a mirror to support the development of armbian:
sync frequency: every 4 hrs
upstream: rsync://rsync.armbian.com/{apt,dl}
armbian-archive coming soon(TM)
Bandwidth: 10Gbit/s, not metered. Currently serving about 10TB per day.
Admin contact: Jing Luo <szmun.luoj a.t. gmail.com> or <jing a.t. jing.rocks>
Geolocation: Tokyo, Japan
IPv6: yes