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.

OCN: 311D RINGSQUARED TELECOM LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
413-285 A Springfield MA SPFDMAWOXWY  126      
413-285 1 Springfield MA SPFDMAWOXWY  126   2009-06-28   
413-344 1 Pittsfield MA SPFDMAWOXWY  126   2010-12-08   
413-526 3 East Longmeadow MA SPFDMAWOXWY  126   2011-01-18   
413-588 3 Northampton MA SPFDMAWOXWY  126   2010-10-28   
413-749 8 Adams MA SPFDMAWOXWY  126   2011-08-18   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.