See more

How large can a subnet be in Amazon Web Services?

The allowed subnet sizes in CIDR notation are between a /28 netmask and a /16 netmask.

CIDR Notation Cheat Sheet

/28 - 16 hosts - x.x.x.15
/27 - 32 hosts - x.x.x.31
/26 - 64 hosts - x.x.x.63
/25 - 128 hosts - x.x.x.127
/24 - 256 hosts - x.x.x.255
/23 - 512 hosts - x.x.x.255
/22 - 1,024 hosts - x.x.1.255
/21 - 2,048 hosts - x.x.3.255
/20 - 4,096 hosts - x.x.15.255
/19 - 8,192 hosts - x.x.32.255
/18 - 16,348 hosts - x.x.63.255
/17 - 32,768 hosts - x.x.127.255
/16 - 65,536 hosts - x.x.255.255

Source: AWS VPCs and Subnets Documentation

Comments

0 comments

Please sign in to leave a comment.