Thanks for the explanations chaps! I hadn't read anywhere that the 2.0.xx and 5.0.xx were being released and/or used. On the subject of geographic IP addresses, I was under the impression that they were so configured as to indicate where the user was, rather like telephone numbers, unless the ISP were temporarily routing via another country for some technical reason ? In simple terms what is the difference between IPv4 and 6 ? What would the advantages be of having non-geographical IP addresses for the masses ?
SHJ