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: 207 [Rate centres in NPA 207] [Dial plan for NPA 207]

NXX: 471

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
207-471 A Portland ME PTLDMECCXTX  732J NUSO, LLC 120      
207-471 0 Portland ME   732J NUSO, LLC 120      
207-471 1 Portland ME   6291 UNITED STATES CELLULAR - ME 120   2025-01-23   
207-471 2 Portland ME   145J TERRA NOVA TELECOM INC. 120   2025-03-01   
207-471 3 Portland ME   145J TERRA NOVA TELECOM INC. 120   2025-03-01   
207-471 4 Portland ME   145J TERRA NOVA TELECOM INC. 120   2025-03-01   
207-471 5 Portland ME   382D LEVEL 3 COMMUNICATIONS, LLC - ME 120   2025-07-14   
207-471 6 Portland ME   732J NUSO, LLC 120      
207-471 7 Portland ME   145J TERRA NOVA TELECOM INC. 120   2025-03-01   
207-471 8 Portland ME   382D LEVEL 3 COMMUNICATIONS, LLC - ME 120   2025-09-19   
207-471 9 Portland ME   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 120   2025-09-16   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.