[bogomipz]

>"Our support team first became aware of connectivity problems for Turkish ProtonMail users starting on Tuesday. After further investigation, we determined that protonmail.com was unreachable for both Vodafone Turkey mobile and fixed line users. Since then, we have also received some sporadic reports from users of other Turkish ISPs. At one point, the issue was prevalent in every single major city in Turkey. After investigating the issue along with members of the ProtonMail community in Turkey, we have confirmed this is a government-ordered block rather than a technical glitch. Internet censorship in Turkey tends to be fluid so the situation is constantly evolving"

Vodaphone like every major ISP has a NOC. Did Prontomail reach out to the ISP to see if it was a routing issue?

I don't see that mentioned above anywhere in the investigation methodology. How did you confirm that it was a "government-ordered block" if you only worked with "members of the ProtonMail community'?

[protonmail]

ProtonMail is quite prevalent in Turkey and there are actually ProtonMail users who work within Vodafone Turkey, and that is how we got the confirmation.

[bogomipz]

So did you also contact their NOC via the handle listed for them in their RIPE routing registry entry? That's the normal protocol.

Just because there's "ProtonMail users who work within Vodafone Turkey" doesn't mean they have enable level access on Vodaphone's routers.