An Amazon VPC address range may be as large as /16 (65,536 available addresses) or as small as /28 (16 available addresses) and should not overlap any other network with which they are to be connected.
- Chapter 4 Amazon Virtual Private Cloud (Amazon VPC)
- from AWS Certified Solutions Architect Official Study Guide
- Publisher: John Wiley & Sons
- Released: October 2016
Unique IP addresses in CIDR notation in ipv4 = 2 power (32-mask)
E.g: The CIDR address of 0.0.0.0/28 will give 2 power ( 32-28) = 2 power 4 = 16 addresses
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