Guide
This free DNS lookup tool shows where a domain resolves: the IP addresses behind it, who hosts them (Cloudflare, AWS, a rental server…), which provider runs its DNS, and where its mail goes. Queries run over DNS-over-HTTPS straight from your browser — nothing is uploaded or stored on a server.
How to look up a domain
- Paste a domain or URL (e.g.
example.comorhttps://example.com/page— the domain is extracted automatically). - Click "Look up". A, AAAA, NS, MX, and TXT records are queried in parallel, and the network owner (ASN) of each resolved IP is identified.
- Read the summary first: resolves-to, hosting, DNS provider, and mail provider in plain language. Open "All records" for the raw data.
What each record tells you
| Record | Question it answers | Example |
|---|---|---|
| A / AAAA | Which IPv4/IPv6 address does the site load from? | 104.16.132.229 |
| CNAME | Is this name an alias for another host? | www → example.pages.dev |
| NS | Which DNS provider manages the zone? | gail.ns.cloudflare.com |
| MX | Which servers receive this domain's mail? | aspmx.l.google.com (Google Workspace) |
| TXT | Verification and policy records (SPF, site ownership…) | v=spf1 include:_spf.google.com ~all |
Example
Looking up yourcompany.com might show it resolves to two Cloudflare IPs (AS13335), DNS is managed by Cloudflare, and MX points at Google Workspace — in one glance you know the site sits behind Cloudflare and the company's mail runs on Google. To go deeper on mail, run the email deliverability checker.
When the hosting shows a CDN
If a site uses Cloudflare or another CDN, its public DNS points at the CDN's IPs, so the CDN is what you will see — the origin server is intentionally hidden. That is still the correct answer to "where does this domain resolve".
Related lookups
- Who owns the domain, and when does it expire? → WHOIS lookup
- Is the SSL certificate valid? → SSL certificate checker
Limitations
- DNS answers are cached by resolvers, so a recent change may take up to its TTL to appear.
- The hosting label is derived from the IP's ASN; small or regional providers may show the raw network name instead of a friendly one.
