Serial Number Generator
Bulk serial numbers with custom format.
This free serial number generator creates serial numbers in bulk with a custom prefix, suffix and length. Choose sequential mode to count up from a starting value with any step size, or random mode with a character set of your choice — digits, uppercase, lowercase, alphanumeric, or a no-ambiguous set that drops easily-confused characters like O and 0. Generate up to 10,000 at once, copy them, or export as a .txt list or .csv sheet. Random codes are de-duplicated within each batch. Codes are generated with a secure random source.
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