Yep- just did. Took two tries to find a temp mail that wasn't blocked. No phone required.

For those concerned about using a temp mail site, it's only used to verify the account; it can never be used to recover it.

But the account is made and I can log into it just fine, perfectly accessible.

Protonmail required me to enter a phone number to create an account.

I just did it yesterday. The text from them says "Your Proton verification code is: ######"