Nano ID CC is a collision calculator for Nano ID, a library for generating random IDs. It helps estimate how much an ID length can be reduced, given a chosen alphabet, ID length and generation speed, to keep the probability of at least one duplicate low.
A page from the Fake Name Generator that checks whether a US Social Security number follows Social Security Administration numbering rules. It explains how SSNs are built and how numbering changed in 2011, and provides sample SSNs for testing forms. The page notes that numbers following the rules may still never have been issued.
A page from the Fake Name Generator that checks a credit card number's network, length and Luhn check digit. It explains the Luhn check step by step and offers sample made-up numbers for testing forms. The page notes the sample numbers are not accounts and are declined by payment gateways.
A page from the Fake Name Generator that validates US bank ABA routing numbers, checking the prefix and check digit. It explains the 3-7-1 check step by step and provides sample routing numbers for testing forms. The samples pass the tests but are otherwise random.
A page that checks the format and prefix rules of UK National Insurance numbers and provides sample NI numbers for testing forms. It explains how a NINO is built and states that NINOs have no check digit, so a correctly formatted number may never have been issued.
A page for checking a vehicle identification number's characters and check digit, explaining the step-by-step check, reading the model year, and offering sample VINs for testing forms. It describes how a VIN is built, letter values, model year codes, and includes PHP check code.
A one-step page for decoding Social Security Numbers issued prior to June 25, 2011. It points to an article on the structure of Social Security Numbers and to the Social Security Administration website for later number assignments. It also points to the Internal Revenue Service website for the structure of Individual Taxpayer Identification Numbers. The page was automatically updated monthly through June 2011 and has been static since.
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A page from the Fake Name Generator that checks whether a US Social Security number follows Social Security Administration numbering rules. It explains how SSNs are built and how numbering changed in 2011, and provides sample SSNs for testing forms. The page notes that numbers following the rules may still never have been issued.
A page from the Fake Name Generator that checks a credit card number's network, length and Luhn check digit. It explains the Luhn check step by step and offers sample made-up numbers for testing forms. The page notes the sample numbers are not accounts and are declined by payment gateways.
A page from the Fake Name Generator that validates US bank ABA routing numbers, checking the prefix and check digit. It explains the 3-7-1 check step by step and provides sample routing numbers for testing forms. The samples pass the tests but are otherwise random.
A page that checks the format and prefix rules of UK National Insurance numbers and provides sample NI numbers for testing forms. It explains how a NINO is built and states that NINOs have no check digit, so a correctly formatted number may never have been issued.
A page for checking a vehicle identification number's characters and check digit, explaining the step-by-step check, reading the model year, and offering sample VINs for testing forms. It describes how a VIN is built, letter values, model year codes, and includes PHP check code.
A one-step page for decoding Social Security Numbers issued prior to June 25, 2011. It points to an article on the structure of Social Security Numbers and to the Social Security Administration website for later number assignments. It also points to the Internal Revenue Service website for the structure of Individual Taxpayer Identification Numbers. The page was automatically updated monthly through June 2011 and has been static since.
