Encrypted Email Service ProtonMail is Being Blocked in Turkey (protonmail.com)

ProtonMail: We have confirmed that Internet service providers in Turkey have been blocking ProtonMail this week. 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. Sometimes ProtonMail is accessible, and sometimes it is unreachable. For the first time ever though, we have confirmed that ProtonMail was subject to a block, and could face further issues in the future. In the post, ProtonMail has also outlined ways to bypass the block.

Comments

protonmail.com is actually protonmail.ch

[Jerry]

$ ping protonmail.com
PING protonmail.com (185.70.40.182) 56(84) bytes of data.
64 bytes from 185-70-40-182.protonmail.ch (185.70.40.182): icmp_seq=1 ttl=48 time=138 ms
served on a GoDaddy server

~$ whois protonmail.com
      Domain Name: PROTONMAIL.COM
      Registry Domain ID: 1612103273_DOMAIN_COM-VRSN
      Registrar WHOIS Server: whois.godaddy.com
      Registrar URL: http://www.godaddy.com/
      Updated Date: 2016-08-10T23:37:51Z
      Creation Date: 2010-08-21T09:10:58Z
      Registry Expiry Date: 2019-08-21T09:10:58Z
      Registrar: GoDaddy.com, LLC
      Registrar IANA ID: 146
      Registrar Abuse Contact Email: abuse@godaddy.com ...
      Name Server: NS1.PROTONMAIL.CH
      Name Server: NS2.PROTONMAIL.CH

~$ ping protonmail.ch
PING protonmail.ch (185.70.40.181) 56(84) bytes of data.
64 bytes from 185-70-40-181.protonmail.ch (185.70.40.181): icmp_seq=1 ttl=44 time=125 ms

So, protonmail.com is at 185.70.40.182 and protonmail.ch is at 185.70.40.181

Interestingly, when I attempt to "whois" protonmail.ch I get:
~$ whois protonmail.ch
"The number of requests per client per time interval is restricted. You have exceeded this limit. Please wait a moment and try again."
I can whois any other site repeatedly without problems of a "per client per time" limit. Whois is being less than open about its results.

In /etc/hosts place
185.70.40.182 protonmail.com
185.70.40.181 protonmail.ch

and bypass DNS blocking.