TSB Address space exhaustion(3/3) In 1995, classless system was introduced RiRs became more conservative with respect to address allocation Some believe ipya addresses will be exhausted in 2-3 years, others in 10 years others sooner others much later Rate of exhaustion influenced b technology(e.g NATing) and rir policies as well as growth Under-use of certain class a.b allocations6 TSB Address space exhaustion (3/3) • In 1995, classless system was introduced • RIRs became more conservative with respect to address allocation • Some believe IPv4 addresses will be exhausted in 2-3 years, others in 10 years, others sooner, others much later. • Rate of exhaustion influenced by technology (e.g. NATing) and RIR policies as well as growth • Under-use of certain class A, B allocations