Merchant numbers cannot be found as public data because they are private information. Therefore, you cannot use the merchant ID number lookup system if you are not associated with the company you are looking for.
These are private numbers that are utilized for money routing—much like a bank account. You don’t want the public to learn about these figures.
MIDs can be located in a few different places and are normally 15 numbers long unless your processor operates otherwise.
On your merchant statement
On your terminal
On your bank statement
By calling your merchant services provider
Through Google Pay