Why can't ping a wireless broadband modem?

That’s also true. Normally 192.168… range. Unless the guy/gal that did the coding for the chip decided it was a good idea to be different and have a DNS range starting with 10 (or the device was previously used in a commercial environment and the system administrator changed it). Mustn’t side-track ‘orange’. None of this is really revelant to his problem, your advice to check www.whatismyip.com still stands.

Peter