Free & public DNS servers
DNS turns a domain name into an IP address. A public DNS resolver is a freely available alternative to the one your ISP assigns - often faster, more private, and more reliable. This is a practical, vendor-neutral reference.
Major free public DNS resolvers
These are the widely used, free-to-use public resolvers and their primary and secondary IPv4 addresses:
| Provider | Primary | Secondary | Notable feature |
|---|---|---|---|
| Cloudflare | 1.1.1.1 | 1.0.0.1 | Privacy-first, very low latency |
| Google Public DNS | 8.8.8.8 | 8.8.4.4 | Global, highly reliable |
| Quad9 | 9.9.9.9 | 149.112.112.112 | Blocks known malicious domains |
| OpenDNS | 208.67.222.222 | 208.67.220.220 | Optional content filtering |
Why use a public DNS resolver
- Speed: large providers run anycast networks close to you, cutting lookup latency.
- Reliability: independent of a single ISP's resolver outages.
- Privacy: resolvers like Cloudflare pledge not to sell query data and support encrypted DNS (DoH/DoT).
- Security: Quad9 and OpenDNS can block domains known to serve malware or phishing.
How to change your DNS
- Windows: Settings → Network & Internet → your adapter → Edit DNS → Manual → enter the addresses above.
- macOS: System Settings → Network → Details → DNS → add servers.
- Router (applies to all devices): your router's admin page → WAN/Internet → DNS settings.
Public DNS answers "what is the IP for this domain?" MarkosWeb answers a different question: is this domain a good, trustworthy destination for people and AI agents? Look up any domain in our directory.
Frequently asked
- What is a public DNS server?
- A public DNS resolver is a freely available server that translates domain names into IP addresses for anyone on the internet, as an alternative to the resolver your ISP assigns.
- Is changing to a public DNS server safe?
- Yes. You only change which resolver looks up domain names; it does not expose your data to the site owner and is reversible at any time in your network settings.
- Which free public DNS is fastest?
- It depends on your location and network. Cloudflare (1.1.1.1) and Google (8.8.8.8) are consistently among the fastest globally; the best way to know is to test from your own connection.
- Does public DNS make browsing faster?
- It can reduce lookup latency and, with a well-provisioned resolver, improve reliability, but it does not change your connection speed itself.
This page continues the free public-DNS reference that has lived at this address for years, now maintained as part of the MarkosWeb directory.