The protocol, which resides on a router at the edge of an IPv6 network, assigns a prefix to each IPv6 address to identify it as a 6to4 address.

CNN: New protocol sneaks IPv6 traffic over the 'Net

The Wiltshire town is to receive a "Royal" prefix in recognition of the role it played in 345 service personnel repatriations in four years.

BBC: Wootton Bassett

Nano is a prefix (from the Greek word for dwarf) meaning a billionth of something.

FORBES: Tiny Miracles