BBC News | Europe hits old internet address limits BBC News Every device that goes online is allocated a unique Internet Protocol (IP) address. The internet grew up using an addressing scheme called IP Version 4 (IPv4). In the 1970s when the web was being built the 4.3 billion IP addresses allowed by IPv4 were ... Internet IPv4 address system hits its limit Providers Pushed To IPv6, As Europe's Last IPv4 Addresses Are Issued Internet IPv4 Addresses Running Out Fast |