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.

Philadelphia Suburban Zone 21, PA

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
484-675 6   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-10-26   
484-675 7   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-10-26   
484-675 8   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-10-26   
484-675 9   3806 CORE COMMUNICATIONS, INC. - PA 228   2018-10-26   
484-906 A PHLAPAMKXSX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 228      
484-906 0   547E ONVOY, LLC - PA 228   2004-07-08   
484-906 1   547E ONVOY, LLC - PA 228   2004-07-08   
484-906 2   547E ONVOY, LLC - PA 228   2004-07-08   
484-906 3   547E ONVOY, LLC - PA 228   2004-07-08   
484-906 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 228   2004-07-08   
484-906 5   547E ONVOY, LLC - PA 228   2022-09-26   
484-906 6   547E ONVOY, LLC - PA 228   2022-09-26   
484-906 7   547E ONVOY, LLC - PA 228   2004-07-08   
484-906 8   547E ONVOY, LLC - PA 228   2004-07-08   
484-906 9   547E ONVOY, LLC - PA 228   2004-07-08   
610-446 A KRLNPAKLRP1  9208 VERIZON PENNSYLVANIA, INC. 228      
610-449 A KRLNPAKLRP1  9208 VERIZON PENNSYLVANIA, INC. 228      
610-536 A PHLAPAAZDS2  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-536 2   7315 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2004-02-26   
610-536 3   3806 CORE COMMUNICATIONS, INC. - PA 228   2019-02-18   
610-536 4   624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-536 5   551G NUSO, LLC 228   2016-09-23   
610-536 6   7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228   2008-09-05   
610-536 7   551G NUSO, LLC 228   2016-09-23   
610-536 9   7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-572 A KGPRPADODS0  7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228      
610-572 0   624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-572 1   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2004-12-01   
610-572 2   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2005-10-23   
610-572 3   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2005-10-23   
610-572 4   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2002-05-08   
610-572 5   547E ONVOY, LLC - PA 228   2021-02-22   
610-572 6   547E ONVOY, LLC - PA 228   2021-02-22   
610-572 7   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2012-11-11   
610-572 8   624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-572 9   7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 228      
610-609 A WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228      
610-609 0   6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2010-10-18   
610-609 1   6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228      
610-609 2   547E ONVOY, LLC - PA 228   2015-05-11   
610-609 3   829J PAETEC ITEL, LLC 228   2006-09-19   
610-609 4   6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2016-11-26   
610-609 5   752H BARR TELL USA, INC. - PA 228   2016-02-11   
610-609 6   6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228      
610-609 7   547E ONVOY, LLC - PA 228   2016-04-08   
610-609 8   547E ONVOY, LLC - PA 228   2016-04-08   
610-609 9   5562 METROPCS, INC. 228      
610-789 A KRLNPAKLRP1  9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 A KRLNPAKLRP1  9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 0   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 1   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 2   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 3   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 4   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 5   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 6   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 7   624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-853 8   9208 VERIZON PENNSYLVANIA, INC. 228      
610-853 9   9208 VERIZON PENNSYLVANIA, INC. 228      
610-860 A PHLAPAFGD0S  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-860 0   8320 SERVICE ELECTRIC TELEPHONE COMPANY, LLC 228   2003-02-07   
610-860 2   547E ONVOY, LLC - PA 228   2021-05-29   
610-860 3   547E ONVOY, LLC - PA 228   2021-05-29   
610-860 4   547E ONVOY, LLC - PA 228   2021-05-29   
610-860 5   547E ONVOY, LLC - PA 228   2021-05-29   
610-860 6   002F BANDWIDTH.COM CLEC, LLC - PA 228   2019-10-24   
610-860 7   624H ONVOY SPECTRUM, LLC 228   2021-11-05   
610-860 9   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228      
610-924 A KRLNPAKLRP1  9208 VERIZON PENNSYLVANIA, INC. 228      
610-924 0   9208 VERIZON PENNSYLVANIA, INC. 228      
610-924 1   624H ONVOY SPECTRUM, LLC 228   2022-01-08   
610-924 2   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2012-02-27   
610-924 3   829J PAETEC ITEL, LLC 228   2006-11-12   
610-924 4   283E YMAX COMMUNICATIONS CORP. - PA 228   2008-04-28   
610-924 5   283E YMAX COMMUNICATIONS CORP. - PA 228   2008-04-28   
610-924 7   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 228   2008-11-14   
610-924 8   624H ONVOY SPECTRUM, LLC 228   2022-01-08   
610-924 9   9208 VERIZON PENNSYLVANIA, INC. 228      

<< 1 2

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.