The Limited Access DMF (DMF) from the Social Security Administration (SSA) contains over 86 million records created from SSA payment records. This file includes the following information on each decedent, if the data are available to the SSA: social security number, name, date of birth, date of death. The SSA does not have a death record for all persons; therefore, SSA does not guarantee the veracity of the file. Thus, the absence of a particular person is not proof this person is alive. SSDMF database is updated once a week.