https://docs.aws.amazon.com/vpc/latest/userguide/create-subnets.html#:~:text=1 Open the Amazon VPC console at https%3A%2F%2Fconsole.aws.amazon.com%2Fvpc%2F.,let AWS choose one for you. More items
- Open the Amazon VPC console.
- In the navigation pane, select Subnets.
- Choose Create subnet.
- For VPC ID, select the VPC for the subnet.
- (Optional) For Subnet name, enter a name for your subnet. This creates a tag with a key of
Name and the value that you specify.
- For Availability Zone, you can select a zone for your subnet or leave the default as No Preference to let AWS choose one for you.
- If the subnet should be an IPv6-only subnet, select IPv6-only. This option is only available if the VPC has an associated IPv6 CIDR block. If you select this option, you can't associate an IPv4 CIDR block with the subnet.
- For IPv4 CIDR block, enter an IPv4 CIDR block for your subnet. For example,
10.0.1.0/24. If you selected IPv6-only, this option is unavailable.
- For IPv6 CIDR block, select Custom IPv6 CIDR and specify the hexadecimal pair value (for example,
00). This option is only available if the VPC has an associated IPv6 CIDR block.
- Choose Create subnet.