I have tried accessing the following websites from your list which are down and it looks like the hoster is no longer around.

Digital Fortress  http://dfcolo.com/bitcoin_terraminer_hosting/
MichColo  http://www.michigan-colocation.com/index.php/server-colocation/bitcoin-miner-hosting
NinjaColo http://ninjacolo.com/colocation.html
ContractMine http://contractmine.com/asic-hosting/
CryptoBoreas http://www.cryptoboreas.com/