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National Security Letters — Part 1

1188 pages · May 11, 2026 · Document date: Dec 4, 1981 · Broad topic: General · Topic: National Security Letters · 1018 pages OCR'd
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To: All Divisions From: Office of the General Counsel Re: 31L9X-HQ-Al487720-0Gc, 04/07/2006 The chart below summarizes the information available through the new adjustments to the FISA tool. Customer/subscriber using the | Information available through PR/TT: service covered: ~ * Name of the customer or subscriber. « Address of the customer or subscriber. * Telephone or instrument number, or other subscriber number or identifier, of the customer or subscriber, including . | any temporarily assigned network address or associated . { routing or transmission information, -) * Length of service. * Types of service. ¢ Any local or long distance telephone records of the customer/subscriber. * Records reflecting period of usage. * Mechanisms/sources of payment, including the number of any credit card or bank account used. Customer/subscriber of Information available through PR/TT: incoming or outgoing — - communications to/from the — | + Name of customer/subscriber. service covered: -. , + Address of customer/subscriber. aa wet * Telephone or instrument number, or other subscriber number or identifier, ... including any temporarily assigned network address or associated routing or transmission information. * Length of service. | * Types of service. The chart below summarizes the Congressional! reporting requirements for the use of the FISA pen register and trap and trace authority. Attorney General shall report on a semiannual basis. Congressional. =»: | * House Permanent Select Committee on Intelligence Committees!’ «. ~°- ; ‘| » House Judiciary Committee vo | Senate Select Committee on Intelligence » Senate Judiciary Committee Reporting categories: | Use of pen registers and trap and trace, Procedural Changes Related to Pen Registers/Trap and Trace: OI[PR will retain the reporting responsibilities for the FISA pen register/trap and trace authority. Reporting cycle: The FBI will now be able to obtain subscriber information (including billing information) with a FISA pen register/trap and trace, without having to couple the request with a FISA Business Record request. This provision should make this investigative tool more useful to 14
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