Announcement - DNS Flag Day 2019

Dear Valued Customers,


Date: Start from 1st Feb 2019


Announcement detail:

DNS software and service providers listed on following link have agreed to coordinate removing accommodations for non-compliant DNS implementations from their software or services.


Announcement effects:

All clients that using Hostpro2u default DNS will not affected by this implementation.

For client that host under Windows hosting which is using Microsoft DNS server will have problems detected but still operating and will not affected after dns flag day


If you are using a third party DNS, You can check whether your domain will be affected by this change at


If the tested domain fails the above test, please contact your current DNS operators.



  1. DNS Flag Day - will it affect you?
  2. 2019 | DNS flag day
  3. Details from National Cyber Coordination and Command Centre (NC4)



If you need further information and clarifications regarding this announcement, please do not hesitate to contact us via helpdesk.

Thank you very much for your attention. 


Best regards,  

Technical team  
Technical Support Department