What does that mean?
It means that your site is unreachable on the Internet from where I am, and probably from where our backend servers are. It does not appear to be a public domain on the internet that is universally reachable from a browser. You’ll need to ask your host to ensure that the domain is resolvable.
I also have same trouble validating the URL: https:fledge.jp
Is this a newly-registered domain, or has it existed for a while? our cards crawler is unable to resolve the address to an IP address. I did manually check your site in the validator via IP address, but I couldn’t get it to work with the fledge.jp domain.
Thank you for your reply.
This has got to four months ago.
The new domain is wrong?
I too have been having problems with my personal blog. With twitter cards to validate I receive the following errors:
ERROR: Fetching the page failed because the fetcher cannot resolve the address.
Also tried http://www.s-config.com
Attempting to validate twitter card without the “www” produces the same error.
I’ve had the domain for almost 3 years but it stopped working in early September when I got a dedicated IP with my new SSL subscription. All plugins are installed properly to give out card information. Meta information appears to be in order when I view page source. And to verify DNS has replicated with new IP I checked my site using Tor proxy off of a server from another country. All passed.
I set my robots.txt to allow twitterbot full access to my site.
If there is something I am missing please let me know. Thank you for your time!
edit 10/13/2016: For reasons unknown my twitter metadata is now working correctly. So to whoever resolved the DNS issues on twitterbot. Thank you very much!