The ATF has stringent rules about what the numbers and letter in an FFL number represent. This guide will help you verify that you have a valid FFL.

An FFL Number MUST be 15 digits long, not counting the dashes.
--
Example FFL Number: 4-65-934-01-3M-01768

  • 1st set must be a 1 digit number (Part of the RDS Key). This number represents one of the 7 regions of the country where the FFL is located.
    1. Southeast
    3. Midwest
    4. Central
    5. Southwest
    6. North Atlantic
    8.Mid Atlantic
    9. Western
  • 2nd set must be a 2 digit number (Part of the RDS Key). This number represents the IRS district where the FFL is located.
  • 3rd set must be a 3 digit number (Geographical Location). This number represents the Federal Information Processing Standards (FIPS) code where the FFL is located.
  • 4th set must be a 2 digit number. This number represents the FFL Type.
  • 5th set must be a single number 0 through 9 and a single letter A through M except I (FFL Expiration Date)
    The number refers to the last number of the year of expiration. (For example, 1 could mean 2011 or 2021)
    The letter refers to the month of expiration.  The letters go A through M, skipping “I.”
    A – January
    B – February
    C – March
    D – April
    E – May
    F – June
    G – July
    H – August
    J – September
    K – October
    L – November
    M – December
    (Example: An FFL with an expiration of 3M means the license expires on 12/1/23.)
  • 6th set must be a 5 digit number (Part of the RDS Key). This number is the unique code for each FFL.

Did this answer your question?