reply to lhollow
Re: [IA] Dedicated IP from Mediacom? lhollows is probably on to something that they just don't want people getting a residential connection but setting up mail servers and such on that type of connection.
I use DNSExit.com with the IP Updater. It can updated DNS records with your dynamic IP.
On a side note, I've had the same dynamic IP for at least a year. As long as your CPE device is on all the time, you can usually keep your IP.