Like the earlier versions, CentOS 6 allows network installation thru’ Internet. Quite useful, if you don’t have time for downloading the full ISOs or if your media becomes corrupt or if you have very fast internet connection.
Most of the CentOS mirrors provide the necessary images. I have quoted the original centos mirror and my preferred mirror.
For 32 bit:
http://mirror.centos.org/centos/6/os/i386/
http://centos.arcticnetwork.ca/6/os/i386/
For 64 bit:
http://mirror.centos.org/centos/6/os/x86_64/
http://centos.arcticnetwork.ca/6/os/x86_64/
Thats it folks! The installer will download whatever is needed.