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: 610 [Rate centres in NPA 610] [Dial plan for NPA 610]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-400 A Coatesville PA PHLAPAFGGT8  3806 CORE COMMUNICATIONS, INC. - PA 228      
610-400 0 Coatesville PA PHLAPAFGGT8  3806 CORE COMMUNICATIONS, INC. - PA 228      
610-400 1 Coatesville PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2005-02-21   
610-400 3 Coatesville PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2007-11-06   
610-400 4 Coatesville PA WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2008-07-14   
610-400 5 Coatesville PA WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2007-03-10   
610-400 6 Coatesville PA ALTWPAALPMD  7513 CTSI, INC. - PA 228   2006-12-04   
610-400 7 Coatesville PA WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2006-10-27   
610-400 8 Coatesville PA PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2006-05-12   
610-400 9 Coatesville PA WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2007-06-04   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.