Is there a limit on how large or small a subnet can be?
The minimum size of a subnet is a /28 (or 14 IP addresses.) for IPv4. Subnets cannot be larger than the VPC in which they are created.

https://www.interviewquestionspdf.com/2017/01/is-there-limit-on-how-large-or-small.html
The minimum size of a subnet is a /28 (or 14 IP addresses.) for IPv4. Subnets cannot be larger than the VPC in which they are created.