In most states, it is illegal to obtain someone else's driver's license number, and this information is not made public. Some companies offer the service, but it is not wise to employ one.
If a legal matter arises in which a person needs access to someone else's driver's license number, it is best to contact the authorities of that state to find out what is necessary to obtain that information and if it is even possible to do so. If a person loses their driver's license, other forms of identification must be presented before the DMV will issue a replacement.
