# Administration of the North American Numbering Plan, Carrier Identification Codes (CICs)
> **Federal Communications Commission** · Final rule. · Published 1997-10-28 · Effective 1997-11-28 · 62 FR 55762
## Document
- **Document number:** 97-28555
- **Category:** other
- **Federal Register citation:** 62 FR 55762
- **CFR reference:** 47 CFR 52
- **Publication date:** 1997-10-28
- **Effective date:** 1997-11-28
- **FCC docket:** CC Docket No. 92-237
## Abstract

On October 22, 1997, the Commission released an Order on Reconsideration addressing carrier identification codes (CICs). The Order on Reconsideration determines that by January 1, 1998 all local exchange carriers (LECs) that provide equal access must have completed switch changes to recognize four-digit CICs. The transition during which three and four-digit CICs co-exist will end on June 30, 1998. The Order on Reconsideration is intended to modify in part the decision in the CICs Second Report and Order (62 FR 19056, published April 18, 1997) regarding the length of the transition. The Commission concurrently released an Order on Application for Review and a second further notice of Proposed Rulemaking in the same docket.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1997/10/28/97-28555/administration-of-the-north-american-numbering-plan-carrier-identification-codes-cics)
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