Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 285

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-285 A London OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324   2025-11-01   
220-285 8 London OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324   2026-01-14   
220-285 9 London OH   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324   2025-11-01   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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