find all ip blocks for a given region in aws

aws_ips.sh

#!/bin/bash
function get_aws_ips() {
  region=$1
  curl -s https://ip-ranges.amazonaws.com/ip-ranges.json | jq ".prefixes[] | select(.region==\"$region\") | .ip_prefix" | tr -d '"'
}

if [ $# -eq 0 ]
then
    echo "Usage: ./aws_ips.sh us-east-1"
    exit 1
else
    get_aws_ips $1
fi