[Help] Fetching website via webmaster tools results in unreachable page

So the problem is that I 301d a domain to another website. After about a month I took off the 301 and tried to fetch the website via google webmaster. Now I have 100% dns error. Is this something that I just need to wait out?

In sitemap errors, I get this message: URL timeout: DNS lookup timeout.

It happens sometimes and is temporary. Wait for some time and reply back if the issue still persists after 24 hrs from now.