My subdomain stopped working

Hi all.
My subdomain stopped working, it was work very will before tow days.

now I get this message:
The DNS server might be having problems.
Error Code: INET_E_RESOURCE_NOT_FOUND.

my subdomain: http://www.web-development-basics.com/

please help.

Thank you :grin:

The site loads fine for me. Try clearing your browser cache and flushing your DNS. Use the tutorials below to help.

I did it but it still give me the same result.
Thank you very much.

Did you change your DNS like the tutorial suggests? And can you try restarting your computer and/or router/modem?

It is work now.
Thanks for help.