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What Is My DNS

Look up public DNS A and AAAA records using Cloudflare DNS over HTTPS, with honest labeling about resolvers.

DNS (Domain Name System) translates human-readable hostnames like example.com into IP addresses your software can connect to. This page runs a lookup through Cloudflare’s public DNS over HTTPS and lists A and AAAA answers it returns. It does not expose your router’s or OS’s configured “DNS servers” list—browsers are not allowed to read that.

🔷What Is My DNS

What is DNS?

When you visit a website, your device needs an IP address for the server. A recursive or stub resolver asks upstream servers for records. Common types include A (IPv4), AAAA (IPv6), CNAME (alias), MX (mail), and TXT (text proofs). This tool focuses on A and AAAA because they are what most users mean when they ask how a name resolves for web traffic.

Authoritative name servers hold the source-of-truth zone data; public resolvers like Cloudflare or your ISP cache answers to speed up repeat queries and reduce load.

How does this page perform the lookup?

Your browser sends an HTTPS request to Cloudflare’s DNS API (cloudflare-dns.com) with the application/dns-json format. Cloudflare answers with JSON containing any A and AAAA records for the name you typed. We label the resolver explicitly so you know which service answered, not “whatever your PC uses for everything.”

Why might you need this?

  • Verification: Check that a hostname publishes the IPv4/IPv6 you expect after a DNS change.
  • Debugging: Compare DoH results with what you see from your OS resolver or dig when something looks cached or split-horizon.
  • Learning: See TTLs and multiple addresses when a name is load-balanced or uses anycast.
  • IPv6 readiness: Confirm AAAA records exist before turning up dual-stack traffic.

TTL: Seconds a resolver may cache an answer. Caching: Old values can linger until TTL expires. DNSSEC: Adds cryptographic authenticity; this page does not by itself validate chains—it only displays what the DoH API returns. For your public egress and coarse network context, pair this with our IP tool.

Privacy note

The hostname you query is sent to Cloudflare’s resolver by your browser. Use names you are comfortable sharing with that provider. Read our Privacy Policy for how this site handles analytics and advertising separately.

Common questions

What does this tool show?
It runs a DNS lookup for the hostname you enter and displays A (IPv4) and AAAA (IPv6) answers returned by Cloudflare’s public DNS service over HTTPS (DoH). That tells you which addresses that resolver returns for the name—not necessarily which DNS servers your operating system uses for all apps.
Why doesn’t it show “my” ISP DNS servers?
Web pages cannot read your computer’s or router’s configured DNS resolver list for security and privacy reasons. To see those addresses you typically check OS or router settings, or run tools on your device outside the browser (for example `ipconfig /all` on Windows or `resolvectl` on many Linux setups).
What is DNS over HTTPS (DoH)?
DoH sends DNS queries inside an encrypted HTTPS connection to a resolver you choose (here, Cloudflare’s 1.1.1.1 service). It protects the query content from many on-path observers on the network, though the resolver you use still sees the questions you ask.
What is the difference between A and AAAA records?
An A record maps a name to an IPv4 address. An AAAA record maps a name to an IPv6 address. A site may publish one, both, or neither depending on how it is hosted.
Can DNS results be wrong or cached?
Yes. Resolvers cache answers for the TTL (time to live) returned with each record. Different resolvers or locations may see different cached values during a migration. If a name is new, propagation can take time across the internet.
Does this tool bypass my Pi-hole or ad blocker?
The lookup is initiated by your browser to Cloudflare’s DoH endpoint. Local DNS filters that only intercept classic UDP/TLS port-53 traffic may not apply to that HTTPS request, depending on your network setup. That is one reason the result can differ from what a system resolver shows.
Do you log my DNS queries?
Your browser talks directly to Cloudflare’s public resolver under their terms and privacy policy. Our site does not receive the full query payload on our servers for this feature. See our Privacy Policy for how our own pages handle analytics and ads separately.