This is all the CIDRs I could find for Tampa FiOS customers -> »
pastebin.com/YEBeLuDb(It's possible 1 person might find this useful. one day)I use this info to limit to access to hosted mail, data, etc - to users on certain ISPs.
It's safer than opening ports to an entire country (or all countries).
Next I need to find CIDRs for wireless customers.
I wish I could arrow those down to a region but I'm not hopeful.