[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.