NetSol

Generally in Thailand, Cloudflare DNS (1.1.1.1) is faster and more privacy oriented. It's worth trying to set it as your Primary DNS and Google (8.8.8.8) as your secondary DNS, then see how things go. For the OPs issue, if AIS blocks the site at the IP level (e.g. firewall, DPI, TCP reset), then DNS won’t matter — the traffic is stopped after resolution. To prevent that you can use Cloudflare’s DNS over HTTPS: - On desktop: Use 1.1.1.1 resolver in DoH mode via your browser or OS - On mobile: Install the 1.1.1.1 app (Cloudflare’s free DNS-over-HTTPS app) Alternative, buy a Mikrotik Router and put it "behind" the AIS modem as the Microtik router does allow you to setup a permanent VPN. It's a but of work though to set it all up, so an easy solution can be to subscribe to a VPN Provider. NordVPN is one I would personally recommend. Hope this helps.