Check a name before you buy the domain
A registrar only answers for the exact domain. Close spellings and the same word with extra terms are often already registered, and some can already send mail.
Choosing a domain is a naming decision, and the registrar only prices one string. Type nimbus.com and you learn whether that exact name can be bought. Close spellings, an extra letter, and the same word with pay, shop, or ai on the end stay off that screen. Plenty of those names are already registered. Some can already send mail.
The list of neighbours belongs in the decision, next to price and the ending. A busy word means other projects already answer to something a customer can mix up with yours. A quieter word leaves fewer of them. Either result is worth having while the registrar tab is still open.
The free check on LookalikeDomain.com reads that neighbourhood. Enter a domain with an ending. The label before the dot is what gets searched, so pebble.com and pebble.io both search pebble. You can run it on a name you are only considering.
What to read before you pay
Start with close spellings. A digit in place of a letter, or a missing letter, is the name a tired reader accepts. Then read the names that keep your word and add another term. Then see which of those can send mail, and which already have a website.
Mail matters once the name is public. A message can show your project in the display name while the address is the neighbour. A website means someone is already publishing under that spelling. A parked name is registered and has no site of its own yet. It can stay empty, or a site can appear on it later.
A long list means the word is already in use across major domain extensions. A match is a neighbour. Calling it a copy of a brand you have not launched takes a person. Most of these pages are other projects that liked the same word.
What a busy word looks like
On 19 October 2026 our LookalikeDomain.com scan ran this check on three ordinary English words: marigold.com, pebble.com, and nimbus.com. They are the kind of word a founder might still type into a registrar, picked so the example would be a fresh name rather than a famous brand. Marigold is the less common of the three. Pebble and nimbus turn up in everyday speech.
The scan found 349 lookalikes of marigold.com, 850 of pebble.com, and 880 of nimbus.com. Mail was already configured on 140, 358, and 403 of those names. A website showed up on 52, 171, and 129. Both together: 26, 73, and 64. Parked pages came to 25, 109, and 50. A few were for sale: 2, 6, and 6.
Marigold's shorter list is what a slightly less common word looks like. It is still hundreds of registered neighbours, and 140 of them can send mail.
A few of the neighbours
On the marigold list, marigold-mu.net can send mail and the page is a Sendai indie label, Marigold Music. marigoldmm.org is Marigold Mind & Movement. marigoldbehavioral.org can send mail and is Marigold Behavioral Health. marigoldai.net can send mail and offers AI services.
On the pebble list, pebblejar.app can send mail and is a habit app. pebblepay.online can send mail and is a point of sale product, PebblePay. pebbles.app can send mail. pebbl3.net swaps the e for a 3 and is registered.
On the nimbus list, nimbusai.dev can send mail and the page is NimbusAI, impact analysis for distributed systems. nimbus8.app is an on-device AI studio. nimbus-ai.app can send mail, and the page is TypeSeer, an autocomplete product. The domain contains nimbus, and the product name on the page is different. n1mbus.org swaps the i for a 1 and can send mail.
Shared words and close spellings are reasons to look before you buy. For a name you have not launched, these pages are other projects.
How to run this on a name you are considering
Open the free lookalike check and enter the name plus an ending, such as nimbus.com. The signed-out check shows the top matches and the total count.
Read the close spellings first, then the names that add pay, shop, login, or support, then the ones that can send mail. A long list is the evidence that the word is already busy. Take that back to the registrar before you pay.
How we counted
On 19 October 2026 our LookalikeDomain.com scan searched live domain registrations in major domain extensions. Every match for these three names was checked for DNS, for mail, and for a website. An SSL certificate only means the name answered on a secure connection.
The count is the lookalike list for that label: close spellings and names built on the word. The same view of a name you might buy starts with the free check.