15 USC § 6155 - Prohibition of expiration date

---
identifier: "/us/usc/t15/s6155"
source: "usc"
legal_status: "official_prima_facie"
title: "15 USC § 6155 - Prohibition of expiration date"
title_number: 15
title_name: "COMMERCE AND TRADE"
section_number: "6155"
section_name: "Prohibition of expiration date"
chapter_number: 87
chapter_name: "NATIONAL DO-NOT-CALL REGISTRY"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(Pub. L. 108–10, § 5, as added Pub. L. 110–187, § 2, Feb. 15, 2008, 122 Stat. 633.)"
---


# § 6155. Prohibition of expiration date

**(a)** **No automatic removal of numbers** March 11, 2003

Telephone numbers registered on the national “do-not-call” registry of the Telemarketing Sales Rule (16 CFR 310.4(b)(1)(iii)) since the establishment of the registry and telephone numbers registered on such registry after , shall not be removed from such registry except as provided for in subsection (b) or upon the request of the individual to whom the telephone number is assigned.

**(b)** **Removal of invalid, disconnected, and reassigned telephone numbers** The Federal Trade Commission shall periodically check telephone numbers registered on the national “do-not-call” registry against national or other appropriate databases and shall remove from such registry those telephone numbers that have been disconnected and reassigned. Nothing in this section prohibits the Federal Trade Commission from removing invalid telephone numbers from the registry at any time.

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**Source Credit**: (Pub. L. 108–10, § 5, as added Pub. L. 110–187, § 2, Feb. 15, 2008, 122 Stat. 633.)