Can I have multiple fixed IP addresses for Business DSL?
Yes. Covad also offers an option of 5 fixed IP addresses for Business DSL customers for an additional $10 per month. If you currently have 1 IP address with NAT, you can easily upgrade to 5 IP addresses in the “IP Configuration” section of My Covad Account. However, if you have a ZyXEL Prestige 643 router, you may need to upgrade your firmware to support multiple IP addresses.