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.

Upton, ME

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
207-533 A UPTNMEXARS1  3314 OXFORD WEST TELEPHONE COMPANY 120      
207-533 2 UPTNMEXARS1  3314 OXFORD WEST TELEPHONE COMPANY 120      
207-533 3   145J TERRA NOVA TELECOM INC. 120   2025-06-06   
207-533 6 UPTNMEXARS1  3314 OXFORD WEST TELEPHONE COMPANY 120      
207-533 9 UPTNMEXARS1  3314 OXFORD WEST TELEPHONE COMPANY 120      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.