i think thats a great idea, heres a list of hosting companies i can monitor:

Netbenefit
itex-ci.net
WorldCom/UUNet
link-connect.net.uk
Keme
Fasthosts
Internetters Ltd
mailbox.co.uk

Could you post an example of the server.txt file? (what date format should it have?) ...i'll provide links to all the server.txt's when im done.