---
kind: "section"
citation: "47 C.F.R. § 64.6303"
title: "47"
number: "64.6303"
heading: "Caller ID authentication in non-IP networks."
url: "https://uscodex.org/cfr/47/64.6303"
---

# §64.6303. Caller ID authentication in non-IP networks.

- (a) Except as provided in §§ [64.6304](/cfr/47/64.6304.md) and [64.6306](/cfr/47/64.6306.md), not later than June 30, 2021, a voice service provider shall either:
  - (1) Upgrade its entire network to allow for the initiation, maintenance, and termination of SIP calls and fully implement the STIR/SHAKEN framework as required in [§ 64.6301](/cfr/47/64.6301.md) throughout its network; or
  - (2) Maintain and be ready to provide the Commission on request with documented proof that it is participating, either on its own or through a representative, including third party representatives, as a member of a working group, industry standards group, or consortium that is working to develop a non-internet Protocol caller identification authentication solution, or actively testing such a solution.
- (b) Except as provided in [§ 64.6304](/cfr/47/64.6304.md), not later than June 30, 2023, a gateway provider shall either:
  - (1) Upgrade its entire network to allow for the processing and carrying of SIP calls and fully implement the STIR/SHAKEN framework as required in [§ 64.6302(d)](/cfr/47/64.6302.md?p=d) throughout its network; or
  - (2) Maintain and be ready to provide the Commission on request with documented proof that it is participating, either on its own or through a representative, including third party representatives, as a member of a working group, industry standards group, or consortium that is working to develop a non-internet Protocol caller identification authentication solution, or actively testing such a solution.
- (c) Except as provided in [§ 64.6304](/cfr/47/64.6304.md), not later than December 31, 2023, a non-gateway intermediate provider receiving a call directly from an originating provider shall either:
  - (1) Upgrade its entire network to allow for the processing and carrying of SIP calls and fully implement the STIR/SHAKEN framework as required in [§ 64.6302(e)](/cfr/47/64.6302.md?p=e) throughout its network; or
  - (2) Maintain and be ready to provide the Commission on request with documented proof that it is participating, either on its own or through a representative, including third party representatives, as a member of a working group, industry standards group, or consortium that is working to develop a non-internet Protocol caller identification authentication solution, or actively testing such a solution.

## Notes

### Amendments

[87 FR 42946, July 18, 2022, as amended at 87 FR 75944, Dec. 12, 2022; 88 FR 40118, June 21, 2023; 90 FR 40256, Sept. 18, 2025]

### Source

Source: 85 FR 22043, Apr. 21, 2020, unless otherwise noted.

### Authority

Authority: 47 U.S.C. 151, 152, 154, 201, 202, 217, 218, 220, 222, 225, 226, 227, 227b, 228, 251(a), 251(e), 254(k), 255, 262, 276, 403(b)(2)(B), (c), 616, 620, 716, 1401-1473, unless otherwise noted; Pub. L. 115-141, Div. P, sec. 503, 132 Stat. 348, 1091; Pub. L. 117-338, 136 Stat. 6156.

### Source

Source: 28 FR 13239, Dec. 5, 1963, unless otherwise noted.

### Amendments

[87 FR 42946, July 18, 2022, as amended at 87 FR 75944, Dec. 12, 2022; 88 FR 40118, June 21, 2023; 90 FR 40256, Sept. 18, 2025]