IP Address Range?

[Angelus897]

I'm using an 8703e on Sprint's network. Is there a way to find out the IP range that the Blackberry uses? I need it to limit the amount of devices which have access to our IMAP server. I spoke with a Sprint Blackberry tech and they don't even know what an IP address is. If I can't get the list, is there a way to get a static IP?

Thanks!

[sam2500]

Are your devices on a Blackberry Server? If so the devices that are activated on it are the only ones that would access your Mail Server.

[ninn]

Here are all of the allocations that RIM has

67.223.64.0/19
206.53.144.0/20
216.9.240.0/20

AT&T seems to come from the 216.9.240.0 block. Not sure which block Sprint uses.

Edit to note I'm using BIS, not BES.