DNS lookup is working but the website (possibly the server) seems to be down. The TLS handshake is never acked:
$ curl -v https://public-inbox.org * Rebuilt URL to: https://public-inbox.org/ * Trying 64.71.152.64... * TCP_NODELAY set * Connected to public-inbox.org (64.71.152.64) port 443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: CAfile: /etc/ssl/certs/ca-certificates.crt CApath: none * TLSv1.2 (OUT), TLS handshake, Client hello (1):
