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CVV2 / CVC2 Result Codes

What M, N, P, S and U mean in a card security code check result.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Returned by the issuer during authorization when a CVV2/CVC2 was sent.

How to use it (step by step)

  1. 1No typing needed: the information is shown below.
  2. 2The result updates instantly as you type (on a phone it is below the boxes).
  3. 3The bold line is the main answer. Tap Copy next to any value to copy it.

Words to know

CVV / CVC
The 3-digit code on the back of a card (4 digits on the front for Amex). It proves the person paying has the card in hand.
Average (mean) / median
Average = add everything and divide by how many. Median = the middle value when sorted; it is not pulled by extreme values.

More in Cards & Payments

Bulk Card Number ValidatorValidate a list of card numbers at once: network, length and Luhn, one per line.Card Brand DetectorIdentify the card network from the first digits: Visa, Mastercard, Amex, JCB, UnionPay and more.BIN / IIN Checker (Offline)Break down the first 6–8 digits of a card: network, industry (MII), lengths and IIN size.MII Lookup (First Card Digit)What the first digit of a card number means: banking, travel, airlines, petroleum…Card Expiry Date ValidatorCheck an MM/YY expiry: valid format, expired or not, and months left.CVV / CVC Format CheckerCheck a security code has the right length for the card brand (3 or 4 digits).