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created: 2025-10-27T09:17:57.483Z
---# Decoding the Telephone Number | Central Office Code COC

**URL:** [https://www.npac.com/canadian-number-portability/how-lnp-works](https://www.npac.com/canadian-number-portability/how-lnp-works)

Decoding the Telephone Number | Central Office Code COC Number Plan Area (Area Code) NPA NXX Prefix (central Office Code) N can be any number from 2 to 9; P, A, can be any number from 0 to 9;X can be any number from 0 to 9 XXXX Line Number


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