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
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.
