Trying to get in touch: ntp.org sites broken

Hello, I'm trying to get in touch with webmaster@ntp.org. But so far without luck. Maybe this route will help. I noticed that quit a number of pages you mention on https://www.ntp.org/ are no longer functioning. Like http://lists.ntp.org/ and http://support.ntp.org/. If anyone knows a way to get this fixed, please help. Thank you. -- Marco