https://www.atfonline.gov/fflezcheck/
Why make a phone call when you can check it on line ?

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If you click on that link this is taken directly from it:
FFL eZ Check does not validate Type 03 (Collectors of Curios and Relics) and Type 06 (Manufacturer of Ammunition) licenses. All attempts to check the validity of Type 03 and Type 06 licenses will result in an error message, even though the licenses may be valid. An FFL should not use this error message as reason to deny dealing with a Type 03 licensee.


Great-Great Grandson of D.M. Lefever
www.lefevercollectors.com