Domain to company name: find who is behind a list of domains or email addresses
A domain to company name lookup finds the organisation behind a domain. Paste up to 50 domains or email addresses, or 250 after a Google sign-in, and each gets a name from Wikidata (the organisation that lists the domain as its official website) or from the site's own og:site_name tag or page title, with a confidence level, the source and the mail server.
Sample result
acme.example belongs to Acme Corporation: its home page names the site that way. old-acme.example looks parked.
- Domain
- acme.example
- Company
- Acme Corporation
- Source
- Site name tag
What this means for you
Add a company column to a list of work emails, with the source of every name beside it.
- Names from Wikidata's official website listings
- Else the site's own name tag or title
- 50 domains a run, 250 when signed in
- Email provider and a CSV for every row
- Domain
- Company
- Bulk
By SimpleVerifier Team · Last updated
How do I find the company names for a list of domains?
- Paste up to 50 domains, one per line (250 when signed in with Google), or work email addresses or website URLs; the domain is taken from each. You can also upload a CSV.
- Press Find company names. Each domain is looked up on Wikidata, its home page is requested once, and its MX records are read.
- Read each row: the name, its confidence, where it came from and the domain's mail server (MX). Names seen elsewhere are listed under Also seen.
- Tick Hide low-confidence guesses, then download the CSV with every name, source and title.
Example
- You enter
- Two entries pasted one per line:
acme.exampleandsales@old-acme.example. - You get
acme.examplecomes back Acme Corporation with medium confidence, from the home page'sog:site_nametag, with Google Workspace as its mail server (MX).old-acme.examplecomes back Not found because its page looks parked. Download names, sources and titles as CSV.- Limits
- Up to 50 domains a run without an account and 250 when signed in with Google. Each home page is requested once; only the domain of an address is sent.
How do I find the company name from an email domain?
Take the part after the @ and look it up. This tool asks Wikidata which items list the domain as their official website (property P856) and takes the best known one, measured by how many Wikipedia and sister-project pages it has. That covers most companies with a Wikipedia article.
For everyone else it reads the home page: the og:site_name tag from the Open Graph protocol first, then application-name, then the part of the <title> that matches the domain, so Stripe | Financial Infrastructure gives Stripe.
What do high, medium and low confidence mean?
High: Wikidata lists the domain as the official website of one clearly best-known organisation, or of one whose home page uses the same name; or the site's own name tag matches the domain. Medium: the name comes from Wikidata but another item lists the same site, or from a name tag or title segment that matches the domain.
Low: a guess from the first part of a page title that doesn't contain the domain's name. Not found: no Wikidata item, no name on the page, or the domain looks parked.
Is the result the legal company name?
Not always. Wikidata usually gives the organisation's common name, such as Apple Inc. or British Broadcasting Corporation. A site's own tags give its brand, which may be a product or a trading name. For the registered legal entity, check a company registry; WHOIS records usually hide the registrant since GDPR.
Why clean a list with company names?
B2B lists often have an email column and nothing else. Adding the company name lets you group contacts by account, spot free-mail and personal addresses, and personalise outreach. Then verify the addresses before you send: a valid company name says nothing about whether a mailbox still exists.
How is this different from a WHOIS lookup?
| This lookup | WHOIS / RDAP | |
|---|---|---|
| Company name | From Wikidata or the site itself | Usually redacted since GDPR |
| Domains per run | 50, or 250 signed in | One, or 500 in the bulk WHOIS lookup |
| Also shows | Email provider, page title, Wikidata item | Registrar, dates, nameservers |
Who uses this tool, and for what?
- Sales teams
- Add a company column to a list that only has work email addresses, then group contacts by account.
- Marketing ops
- Enrich signup domains with the organisation behind them before routing leads.
- Data teams
- Label a domain list with names and their sources, so every value can be traced.
- Security teams
- See which organisation claims a domain that sent mail you don't recognise.
What can’t this tool tell you?
- Wikidata covers well-known organisations; small companies get a name from their own page or none.
- A site's own tags give a brand or product name, which may not be the legal company name.
- Sites that block automated requests or don't answer within a few seconds get no page-based name.
- Up to 50 domains a run without an account, 250 signed in.
Common questions
- How do I find a company name from a domain?
- Paste the domain into a domain to company name lookup like this one. It returns the organisation Wikidata lists for that website, or the name the site gives itself in its tags or title, with the source.
- Can I paste email addresses instead of domains?
- Yes. The domain is taken from each address, so jane@acme.com is looked up as acme.com. Only the domain is sent.
- Is this domain to company tool free?
- Yes. It's a free tool: 50 domains a run without an account and 250 when signed in with Google, with no card.
- Why is a company name missing?
- The domain isn't on Wikidata and its home page didn't answer, has no title, or looks parked. Small businesses and dead domains often show no name.
- Does it use WHOIS?
- No. Most WHOIS records hide the registrant's name since GDPR, so this tool uses Wikidata and the site's own home page instead.
- What does the mail server column show?
- Who receives mail for the domain, read from its MX records: a mailbox provider such as Google Workspace or Microsoft 365, or a security gateway such as Proofpoint in front of one. It's blank when the host isn't one we recognise or the domain has no MX.
Sources
A tidy list can still be full of dead addresses.
Extracting, deduplicating and syntax checks all work on the text of an address. None of them can tell whether the mailbox exists. Only the server that hosts it can answer that, through an SMTP check, and that is what the paid product does.
- Upload the cleaned file as it is: CSVs up to 100,000 rows
- A real SMTP mailbox check on every row, with catch-all detection
- Small list? $9 one-time covers 2,500 emails, no subscription
One plan, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.