**To create a prefix list** The following ``create-managed-prefix-list`` example creates an IPv4 prefix list with a maximum of 10 entries, and creates 2 entries in the prefix list. :: aws ec2 create-managed-prefix-list \ --address-family IPv4 \ --max-entries 10 \ --entries Cidr=10.0.0.0/16,Description=vpc-a Cidr=10.2.0.0/16,Description=vpc-b \ --prefix-list-name vpc-cidrs Output:: { "PrefixList": { "PrefixListId": "pl-0123456abcabcabc1", "AddressFamily": "IPv4", "State": "create-in-progress", "PrefixListArn": "arn:aws:ec2:us-west-2:123456789012:prefix-list/pl-0123456abcabcabc1", "PrefixListName": "vpc-cidrs", "MaxEntries": 10, "Version": 1, "Tags": [], "OwnerId": "123456789012" } } For more information, see `Managed prefix lists <https://docs.aws.amazon.com/vpc/latest/userguide/managed-prefix-lists.html>`__ in the *Amazon VPC User Guide*.