function isLocalNetwork(host) {
        return isLocalhost(host)
        || network192Regex.test(host)
        || network10Regex.test(host)
        || network100Regex.test(host)
        || network172Regex.test(host)
        || network168Regex.test(host)
    }
Tests if the host is part of a local or internal network

@param {string} host 
@returns {boolean}