[ChristianBundy]

Interesting. Is it possible to tell which Diffie-Hellman primes are used on an HTTPS connection?

Back in 2016 I noticed that OpenSSL was using the wrong primes (https://github.com/openssl/openssl/commit/fb015ca6f05e09b11a...) and since then I've been very curious to know how prevalent the previous DH primes are.