We checked your domain, wisko.org, and it appears that one of your name servers is misconfigured. The name server, sdns1.ovh.net, is not responding to any web requests for wisko.org. You will need to add wisko.org to sdns1.ovh.net's domain list so it will begin to accept web requests for your domain.
You can see this for yourself by performing an IP lookup. Steps on how to perform an IP lookup can be found here:
If there are caching issues, you may want to consider using our Snapshot tool to see an un-cached version of your domain. Steps on how to access the Snapshot tool can be found here:
How do I access the website snapshot tool?
Our website snapshot tool allows you to see what your website homepage looks like. The reason you may want to use this tool is to see if you're seeing a different - cached - version of your website.
To see your website's snapshot, please follow these steps: