jodd-core/src/main/java/jodd/io/NetUtil.java
public static String resolveHostName(final byte[] ip) {
		try {
			InetAddress address = InetAddress.getByAddress(ip);
			return address.getHostName();
		} catch (UnknownHostException ignore) {
			return null;
		}
	}
public static String resolveHostName(final byte[] ip) {
		try {
			InetAddress address = InetAddress.getByAddress(ip);
			return address.getHostName();
		} catch (UnknownHostException ignore) {
			return null;
		}
	}
Resolves host name from IP address bytes.