Google Business Profile · en español
The short version: a CID is a long number Google assigns to one specific Business Profile listing — not to your business, to that one listing. It's not in your dashboard; you have to go find it. And the reason it's worth finding: Google sometimes creates a second listing for your business on its own, splitting your reviews across two profiles you never asked for. Our free scan checks the rest of your AI visibility — 60 seconds, no card.
CID stands for Customer ID. It's a unique number, usually 18 to 20 digits long, that Google's systems use internally to identify one exact place on Google Maps. Your business name can be shared by ten other places in the country. Your CID can't — it points to exactly one listing, at exactly one address, with exactly one review history.
That matters more than it sounds like it should, because of what it's used for: proving, beyond argument, which listing is the real one.
Google doesn't show it in the Business Profile dashboard you log into to manage your listing. You have to pull it from Google Maps directly.
| Step | What to do |
|---|---|
| 1 | Find your business on Google Maps and open the listing |
| 2 | In the address bar, replace https:// with view-source: and press enter (or right-click the page and choose "View Page Source") |
| 3 | Press Ctrl+F (or Cmd+F) and search the page for ludocid= |
| 4 | The string of digits right after ludocid=, up to the next & or #, is your CID |
If your business is service-area only, with no public storefront pin, there's a second method: your Maps URL contains two strings starting with 0x. The second one, converted from hexadecimal to decimal, is your CID. It's fiddlier — the page-source method above is the one to try first.
Here's the part most explanations skip. A CID is only interesting because of a genuine problem it solves: Google's systems occasionally generate a new, separate listing for a business that already has one — after a move, a name change, or for any business whose service area gets mapped inconsistently across different searches. Nobody at the business asked for the second listing. It just appears.
When that happens, your reviews split. A customer who reviewed you two years ago is attached to one listing; a customer who reviewed you last month might be attached to the other. Neither profile shows your full history, and neither looks as trustworthy as the real, combined total would.
The CID is the tool for fixing it: it's how you tell Google, in a support request or a "Suggest an edit," exactly which listing to keep and which to merge or remove. Without it, you're describing your business by name and hoping a human on the other end picks correctly.
Worth doing right now, free: search your own business name on Google Maps. If you see more than one pin for the same business, that's a duplicate — and every review sitting on the wrong one is a review Google isn't crediting to the listing that matters.
Being honest about the limits: finding your CID and confirming you don't have a duplicate listing is one real, specific check. It says nothing about whether your website has the structured data AI engines read, whether AI crawlers can actually reach your site, or whether ChatGPT and Google's AI Mode would recommend you by name if someone asked. That's a different, bigger question — the one our free scan actually answers.
A CID is a unique number, usually 18 to 20 digits long, that Google assigns to one specific Business Profile listing. It's how Google's own systems tell your listing apart from every other place on Maps, including a business with the exact same name down the street, or a second copy of your own listing.
It isn't shown anywhere in the Google Business Profile dashboard. Open your listing on Google Maps, view the page source (replace https:// with view-source: in the address bar, or right-click and choose View Page Source), then search the page for "ludocid=". The number right after that, up to the next & or #, is your CID.
Mostly because of a problem Google causes, not one you cause: Google sometimes generates a second listing for a business on its own, especially after a move, a name change, or a service-area business getting mapped inconsistently. That splits your reviews and your data across two profiles. The CID is how you prove, in a support request or a Suggest an Edit, exactly which listing is the real one.
Yes, and it happens more than most owners realize. It's especially common for businesses that moved locations, changed their name, or serve a wide area rather than a single storefront. If you've never checked, search your own business name on Google Maps and look for more than one pin.
No — it finds one specific, real problem: whether your reviews and data are split across duplicate listings. It says nothing about your website's schema, your AI-crawler access, or whether ChatGPT and Google's AI actually recommend you. Our free scan checks the rest.