---
kind: "section"
citation: "28 C.F.R. § 202.234"
title: "28"
number: "202.234"
heading: "Listed identifier."
url: "https://uscodex.org/cfr/28/202.234"
---

# §202.234. Listed identifier.


The term listed identifier means any piece of data in any of the following data fields:

- (a) Full or truncated government identification or account number (such as a Social Security number, driver's license or State identification number, passport number, or Alien Registration Number);
- (b) Full financial account numbers or personal identification numbers associated with a financial institution or financial-services company;
- (c) Device-based or hardware-based identifier (such as International Mobile Equipment Identity (“IMEI”), Media Access Control (“MAC”) address, or Subscriber Identity Module (“SIM”) card number);
- (d) Demographic or contact data (such as first and last name, birth date, birthplace, ZIP code, residential street or postal address, phone number, email address, or similar public account identifiers);
- (e) Advertising identifier (such as Google Advertising ID, Apple ID for Advertisers, or other mobile advertising ID (“MAID”));
- (f) Account-authentication data (such as account username, account password, or an answer to security questions);
- (g) Network-based identifier (such as Internet Protocol (“IP”) address or cookie data); or
- (h) **Call-detail data (such as Customer Proprietary Network Information (“CPNI”)).**

## Notes

### Authority

Authority: 50 U.S.C. 1701 et seq.; 50 U.S.C. 1601 et seq.; E.O. 14117, 89 FR 15421.

### Source

Source: 90 FR 1706, Jan. 8, 2025, unless otherwise noted.