The Department of Computer Science and Engineering, IIT Kanpur is now hosting an official public mirror (http://mirror.cse.iitk.ac.in) for 4 popular GNU/Linux distributions:
We also host an RPMFusion package repository.
Apart from these 4 distros we also mirror an Open Access Journal, Theory of Computing which is available here.
For IITK users, additional documentation on how to use mirror from within IIT Kanpur is available here [Internal Link].