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: 413 [Rate centres in NPA 413] [Dial plan for NPA 413]

NXX: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
413-821 A Springfield MA AGWMMARODS0  9102 VERIZON NEW ENGLAND INC. 126      
413-821 0 Springfield MA   9102 VERIZON NEW ENGLAND INC. 126      
413-821 1 Springfield MA   9102 VERIZON NEW ENGLAND INC. 126      
413-821 2 Springfield MA   9102 VERIZON NEW ENGLAND INC. 126      
413-821 3 Springfield MA   829J PAETEC ITEL, LLC 126   2013-05-08   
413-821 4 Springfield MA   5562 METROPCS, INC. 126   2014-12-15   
413-821 5 Springfield MA   5562 METROPCS, INC. 126   2014-03-19   
413-821 6 Springfield MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 126   2024-12-12   
413-821 7 Springfield MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 126   2024-12-12   
413-821 8 Springfield MA   145J TERRA NOVA TELECOM INC. 126   2022-05-07   
413-821 9 Springfield MA   9102 VERIZON NEW ENGLAND INC. 126      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.