I had a further look on
http://faq.sipbroker.com/tiki-index....r%20DIY%20VoIP
Apparently it was NuPhone. They now seem to do it at 3c/min with a $3 monthly charge.... though this is not that clear.
Sorry this is off topic... but I thought I would mention it just in case as there appears to be not that much difference in price between a DID having a real area code to a 800/888 (and also if you're only expecting low call volumes). Just note that some North American Tollfrees work across 50 states, some only 48. Some Canada, some not. Some charge extra for payphone access.
http://www.supernettel.com/TollFree.htm seem to include all the options (Payphone, Canada, Hawaii and Alaska) for 4c/min incoming!