for enom I need what 'IP address that will connect to the enom API" would that be my domain's dedicated IP (like radonhost.com) or my servers shared IP? thanks.

It is the main IP of your server, whatever that is.

It is the main IP of your server, whatever that is.

Not necessarily. It depends on the IP of the script that is being used to communicate with eNom. With WHMAP that was my site's dedicated IP address, however, with MB that was my servers main IP address.

i am using ModernBill, so I should give them my server's main IP right?

i am using ModernBill, so I should give them my server's main IP right?
Run one 'transaction'. MB will return a error that includes the IP used - give this IP to enom. (My guess is server main IP).

i am using ModernBill, so I should give them my server's main IP right?

I think that it depends on whether or not you are using curl compiled into PHP or CLI. I think that if its compiled into PHP you use the IP address of the account and if you are using curl via the CLI then you will want to use the server's main IP.

I am using curl compiled in PHP.

I am using curl compiled in PHP.

Try what Andren said.