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.

Williamstown, MA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
413-217 A   829J PAETEC ITEL, LLC 126      
413-217 0   990E BANDWIDTH.COM CLEC, LLC - MA 126   2012-02-11   
413-217 1   892D ONVOY, LLC - MA 126   2013-01-12   
413-217 2   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 126   2016-10-15   
413-217 3   7103 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MA 126   2019-06-02   
413-217 4   990E BANDWIDTH.COM CLEC, LLC - MA 126   2002-06-16   
413-217 5   624H ONVOY SPECTRUM, LLC 126   2020-11-30   
413-217 6   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2022-10-07   
413-217 7   508J CENTURYLINK COMMUNICATIONS, LLC 126   2015-04-21   
413-217 8   829J PAETEC ITEL, LLC 126   2002-04-08   
413-217 9   829J PAETEC ITEL, LLC 126      
413-458 A WLTWMAWADS0  9102 VERIZON NEW ENGLAND INC. 126      
413-458 0   9102 VERIZON NEW ENGLAND INC. 126      
413-458 1   9102 VERIZON NEW ENGLAND INC. 126      
413-458 2   9102 VERIZON NEW ENGLAND INC. 126      
413-458 3   9102 VERIZON NEW ENGLAND INC. 126      
413-458 4   9102 VERIZON NEW ENGLAND INC. 126      
413-458 5   9102 VERIZON NEW ENGLAND INC. 126      
413-458 6   793K TWC IP ENABLED SERVICES, LLC 126   2010-11-01   
413-458 7   9102 VERIZON NEW ENGLAND INC. 126      
413-458 8   9102 VERIZON NEW ENGLAND INC. 126      
413-458 9   9102 VERIZON NEW ENGLAND INC. 126      
413-597 A WLTWMAWADS0  9102 VERIZON NEW ENGLAND INC. 126      
413-597 0   624H ONVOY SPECTRUM, LLC 126   2021-03-01   
413-597 1   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2020-09-18   
413-597 2   9102 VERIZON NEW ENGLAND INC. 126      
413-597 3   9102 VERIZON NEW ENGLAND INC. 126      
413-597 4   9102 VERIZON NEW ENGLAND INC. 126      
413-597 5   9102 VERIZON NEW ENGLAND INC. 126      
413-597 6   9102 VERIZON NEW ENGLAND INC. 126      
413-597 7   892D ONVOY, LLC - MA 126   2012-03-11   
413-597 8   990E BANDWIDTH.COM CLEC, LLC - MA 126   2009-12-11   
413-597 9   624H ONVOY SPECTRUM, LLC 126   2021-03-01   
413-741 A SPFDMAWOXLY  892D ONVOY, LLC - MA 126      
413-741 0   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2023-12-27   
413-741 1   892D ONVOY, LLC - MA 126   2021-05-24   
413-741 2   892D ONVOY, LLC - MA 126   2021-05-24   
413-741 3   073H TELNYX LLC 126   2023-09-24   
413-741 4   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2025-11-13   
413-741 6   892D ONVOY, LLC - MA 126   2021-06-13   
413-741 7   892D ONVOY, LLC - MA 126   2021-06-13   
413-741 8   8468 FREEDOM RING COMMUNICATIONS, LLC 126   2022-08-30   
413-741 9   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2023-09-01   
413-803 A   829J PAETEC ITEL, LLC 126      
413-884 A   829J PAETEC ITEL, LLC 126      
413-884 0   829J PAETEC ITEL, LLC 126      
413-884 1   829J PAETEC ITEL, LLC 126      
413-884 2   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2005-05-09   
413-884 3   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2008-06-01   
413-884 4   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2003-05-13   
413-884 5   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2004-02-27   
413-884 6   793K TWC IP ENABLED SERVICES, LLC 126   2006-11-20   
413-884 7   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 126   2024-11-26   
413-884 8   3849 RINGSQUARED TELECOM LLC 126   2009-04-02   
413-884 9   829J PAETEC ITEL, LLC 126      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.