No data received for all WP sites

I was trying to load my site (ishg.wordpress.com), but all I get is a ‘No data received’ error from my Chrome browser. I thought it might be just my blog, but I tried other blogs too (like https://whatwouldshengdu.wordpress.com/ or https://blog.longreads.com/) but I get the same error. I tried to open them in Safari too, but still no luck. Is there a downtime I just don’t know about?