Adding my sitemap to google.
 

I can add any of my other sites to googles webmaster area except one. They are all setup the same way, which makes me wonder why?

Does anyone have any suggestion on how to proceed?

Thanks

We encountered a DNS timeout looking up your site's domain name.
We tried to access your verification file, but were unable to access your domain due to a DNS error. This could be because your server is down, or there is an issue with the DNS routing to your domain. Make sure that your domain is resolving correctly and try again.

level 3 is experiencing packet loss and routing issues

NVM, DNS Issue Resolved through the registrar.