<P> Some large / 8 blocks of IPv4 addresses, the former Class A network blocks, are assigned in whole to single organizations or related groups of organizations, either by the Internet Corporation for Assigned Names and Numbers (ICANN), through the Internet Assigned Numbers Authority (IANA), or a regional Internet registry . </P> <P> Each / 8 block contains 2 = 16,777,216 addresses . </P> <P> As IPv4 address exhaustion has advanced to its final stages, some organizations, such as Stanford University, formerly using 36.0. 0.0 / 8 (now to APNIC) have returned their allocated blocks to assist in the delay of the exhaustion date . </P>

How many ip addresses in a 8 block