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How SSN and BSN Numbers Are Generated
Dutch BSN (Burgerservicenummer)
The BSN is a 9-digit citizen identification number used in the Netherlands. It must pass the "elfproef" (eleven-test): multiply each digit by a descending weight from 9 to 2 (for the first 8 digits) and the 9th digit by -1. The result must be divisible by 11. All generated BSNs pass this validation.
US SSN (Social Security Number)
The SSN is a 9-digit number in the format XXX-XX-XXXX. The area number (first 3 digits) is between 001 and 899, excluding 666. The group number (middle 2) and serial number (last 4) are random. Generated SSNs follow the standard format but are not real assigned numbers.
Frequently Asked Questions
Yes. All generated BSNs are validated using the eleven-test before output. They will pass any standard BSN validation check.
No. The SSNs are formatted correctly but are not real assigned numbers. They will not be found in any official US government database.
The Social Security Administration has never assigned area code 666. The generator excludes it to avoid generating technically invalid numbers.
Yes. Generated BSNs are designed specifically for use in test systems. They pass the elfproef used by Dutch government systems and software.
Yes. Generate up to 1,000 BSN or SSN numbers and export to CSV or JSON.
Related Tools
All generated data is entirely fictional and not suitable for use as real personal information.