Who could pass
for your domain?
Finds the typo and look-alike versions of your domain, checks which are registered, and shows which can host a website or send email.
No account required to use this tool.
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OpenFrequently asked questions
What is a lookalike domain?
A domain that's easy to mistake for another: paypa1.com for paypal.com, rnicrosoft.com for microsoft.com, or your name with -login added. People register them to catch mistyped visits, to send phishing email that looks like it came from you, or to sell the name back. Typosquatting is the same idea, built on typing mistakes.
Which lookalikes does this check?
It makes every common kind: missing, doubled and swapped letters; letters next to each other on a keyboard; letters that look alike (rn for m, 0 for o, 1 for l); accented letters and whole-name Cyrillic lookalikes, shown with their punycode; your name on 29 other popular extensions; hyphens, plurals; and added words such as login, secure and support. It then checks the 100 likeliest, a few of every kind, with the registries.
A lookalike is registered. Is it dangerous?
Not always. Many are registered by the brand itself to protect its name, by parking companies, or for an unrelated business. Look at the registrar and the creation date: one registered recently, at a different registrar from yours, with a mail server set up, is the kind worth watching. A mail server means the name can send email that looks like yours.
What do the website and mail columns mean?
Website means the name points at a web server (it has an A or AAAA record). Mail means it has mail servers (MX records), so it can send and receive email. Both come from public DNS at the moment you check.
What can I do about a lookalike someone else owns?
Keep watching it: Monitoring emails you when it changes hands, starts pointing at a website or sets up email. If it's used for phishing, report it to the registrar's abuse contact, which the full domain report shows. For trademark abuse, a UDRP complaint can ask for the name to be transferred to you. Set up DMARC on your own domain so mail pretending to be you gets rejected.
Should I register my own lookalikes?
The ones closest to your name and the most popular other extensions are worth owning if you send a lot of email or take payments. The available ones are listed so you can pick them up before someone else does.
How many searches can I run?
10 a day without an account. A free account gets 100 a day through the API, CLI and MCP server.
Can my AI agent check lookalikes?
Yes. The Lemon Domains MCP server has a find_lookalikes tool, the REST API serves the same search at GET /api/v1/lookalikes, and the lemon CLI runs it with lemon lookalikes example.com.
Watch your domains and their lookalikes in one place.
Lemon Domains keeps every domain you own in one list across registrars, and Monitoring emails you when a domain you watch changes.