1. How serious (for user) is the red marked error in this DND lookup test. One nameserver doesn't respond. 2. DNS Timing shows diferent results on repeating testing. I often get an "A" result - bad. Is this test reliable? 3. Can a hosting server be "guessed" from a domain? Like, I see a fast loading site and I want to check where it is hosted? 4. Any reliable online connection speed test? 5. What is "no glue" issue - is it important for user and if yes, how can be fixed?
It was that red warning there yesterday, it seems this changes hourly... Anyone can answer questions 2.-5. ?
I think --this tool is better to check a website's IP. Please try--- http://www.selfseo.com/find_ip_address_of_a_website.php