Simple lambda function to get Current IP

lambda-get-ip.js

let response;

exports.lambdaHandler = async (event, context) => {
    try {
        const ret = await axios(url);
        response = {
            'statusCode': 200,
            'body': JSON.stringify({
                location: ret.data.trim()
            })
        }
    } catch (err) {
        console.log(err);
        return err;
    }

    return response
};

Also you can use the AWS endpoint

http://checkip.amazonaws.com/