Do you remember the details?
Yes, I did a blog post when it happened: https://captnemo.in/blog/2018/06/02/google-tld-no-more-a-rec....
Google was pointing its TLDs to 127.0.0.53, and once they started using the TLDs actively, they removed the records.
I maintain a list at captnemo.in/tld-a-record