Public facing DNS server - not working, port 53 blocked?

[#1]

Hello,

I am currently trying to get my Public facing DNS server working as part of a project I am working on. I've opened port 53 and I am still unable to resolve anything and the port is closed, I wanted to know if port 53 is blocked?

Thank you.

[#2]

Hi @Aldabbagha  Have you checked your Firewall setting here? https://www.plus.net/member-centre/broadband/firewall (Login required)