DNS translates the domain you entered as IP address that is blocked by ISP so you can't access that web page using their servers system. But You can solve it by using VPN software but these are not free if you expected high-speed uploading and downloading data transferring rate.
How to access restricted websites on iPhone with Dialog 4G router?
- Tap settings in your iPhone, mostly you can get it from home screen wait for a moment until it opens.
- Tap Wifi toggle once, it will show you list of connected wifi routers.
- Tap your own Wifi name after that you will be able to see Wifi related settings.
- Tap DNS and change it to 188.8.131.52 or 184.108.40.206 or 220.127.116.11 or 18.104.22.168
How to access restricted websites on windows laptops?
I'm sure that it will work at high speed compare to free VPN software without any annoying ads.