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Find the look-alike domains that could pretend to be you.
We make around 100 twins of your domain, look each one up and show which are taken, which can send email and which you could register first. Free, no sign-up.
- 100% free
- No sign-up
- No daily limit
- Runs in your browser
Twins of
What to do now
Taken twins aren't always a threat. Look closest at those that can send email. We never link to the twins, so you can't open a harmful site by mistake.
Want help protecting your domain?
We'll set up SPF, DKIM and DMARC so email faking your exact domain gets blocked, and talk you through the twins.
How it works
Simple, in 3 steps.
- 01
Type your domain
The one you send email from, like yourcompany.com.
- 02
We make the twins
Around 100 look-alikes: typos, swapped letters, other endings and letters from other alphabets.
- 03
See which are taken
We look each one up in public DNS and show which can send email as you, so you know what to act on.
The twins we look for
Ten ways a name can be copied.
Here is one of each for a made-up company, northwind.com. The changed part is marked.
Other ending
northwind.net
Same name with a different ending, like .co instead of .com.
Look-alike letters
northvvind.com
Letters that look the same at a glance, like rn for m or 0 for o.
Foreign letter
nоrthwind.com
A letter from another alphabet that looks exactly like yours, like a Cyrillic а.
Missing letter
orthwind.com
One letter left out.
Double letter
nnorthwind.com
One letter typed twice.
Swapped letters
onrthwind.com
Two letters next to each other swapped.
Next-key typo
borthwind.com
One letter replaced by a key next to it on the keyboard.
Added hyphen
n-orthwind.com
A hyphen added inside the name.
Added word
northwind-mail.com
A common word added, like -mail, -login or get-.
Missing dot
wwwnorthwind.com
The dot after www left out, so www.yourname.com becomes wwwyourname.com.
Why it matters
One changed letter is all a scam needs.
Fake invoices
An email from accounts@yourc0mpany.com asks a client to pay a "new" bank account.
Fake login pages
A link to a look-alike site asks your team for their email password.
Hijacked replies
A scammer joins a real email thread from a twin address and nobody spots the one changed letter.
Block fakes of your exact domain
A DMARC record set to reject stops anyone sending as your real domain. Make one here.
Register the closest twins
A few free twins with other endings or look-alike letters cost little and can't be used against you once they're yours.
Tell people where you email from
Let clients know you only email from @yourdomain and never change bank details by email.
Questions
Straight answers.
What is a domain twin?
A domain that looks almost like yours, like venov1q.com for venoviq.com. Scammers buy them to send fake invoices or login pages that look like they come from you.
Does a taken twin mean someone is attacking me?
Not always. Many twins are parked, kept by domain sellers or owned by a real business with a similar name. The ones to watch are those set up to send email.
Why is "can send email" the biggest risk?
A twin with mail servers or an SPF record is ready to send and receive email. That is what a scammer needs to trick your clients or staff.
What is a "foreign letter" twin?
Some letters from the Cyrillic and Greek alphabets look exactly like English ones. A domain made with them can look identical to yours in an email or browser.
Do you buy domains or contact anyone?
No. We only read public DNS records. Nothing is bought, registered or sent, and the owners of the twins are not told.
Do you see or save my domain?
No. The check runs in your browser. It asks Cloudflare's public DNS about each twin. Nothing comes to us.
Keep going
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- Free · LiveDMARC / SPF record generatorTick the services that send your email and get the exact SPF and DMARC records to paste.Open tool
Every slow reply is a chance for someone else to win the client.
Let's make sure the next one is yours.
Tell us what you need and we'll send you a clear quote.