Public DNS (Domain Name Service) based on IPv4, IPv6 widely used

In most cases, the Dynamic Host Configuration Protocol (DHCP) automatically configures your system to use the IP addresses of your ISP's domain name servers.

To use Public DNS, you need to explicitly change the DNS settings in your operating system or device to use the Public DNS IP addresses.

The procedure for changing your DNS settings varies according to operating system and version (Windows, Mac, Linux, or ChromeOS) or the device (computer, phone, or router). We give general procedures here that might not apply for your OS or device; consult your vendor documentation for authoritative information.

Among above DNS which can blocks malware looks awesome for clean web browsing.

Regarding Alternate DNS, not sure if it works perfectly, but pretty much helps clean web browsing as well with no Ads.

Key Takeaways:

• Public DNS servers are widely used for resolving domain names to IP addresses.
• You can choose from various public DNS providers like Google, Cloudflare, and Alternate DNS.
• These providers offer different features like malware blocking, ad-blocking, and family-friendly content filtering.
• You can manually configure your DNS settings to use a public DNS provider, overriding your ISP's default settings.
• Different operating systems and devices have varying procedures for changing DNS settings.