public List<String> domLookup(String domain, String tld) {
		if (Utility.isEmpty( queryStr )) {
			queryStr = "{domain}";
		}
		queryStr = queryStr.replace( "{domain}", domain );
		queryStr = queryStr.replace( "{tld}", tld );
		if (!Utility.isEmpty( url )) {
			url = url.replace( "{domain}", domain );
			url = url.replace( "{tld}", tld );
		}
		if (Utility.isEmpty( hostname )) {
			hostname = DEFAULT_HOST;
		}
		return doQuery();
	}