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: 973 [Rate centres in NPA 973] [Dial plan for NPA 973]

NXX: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
973-840 A Caldwell NJ WHWKNJAN5MD  4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224      
973-840 0 Caldwell NJ NWRKNJ0202Z  507J THE VOICE APPLICATION NETWORK, LLC 224   2016-09-04   
973-840 1 Caldwell NJ WHWKNJAN5MD  4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224      
973-840 2 Caldwell NJ WHWKNJAN5MD  4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224   2015-10-17   
973-840 3 Caldwell NJ NWRKNJ0298Z  321J HD CARRIER LLC 224   2016-05-19   
973-840 4 Caldwell NJ NWRKNJ0202Z  507J THE VOICE APPLICATION NETWORK, LLC 224   2016-09-04   
973-840 5 Caldwell NJ NWRKNJ0202Z  507J THE VOICE APPLICATION NETWORK, LLC 224   2016-09-04   
973-840 6 Caldwell NJ PSWYNJBXDS0  999H BLUEBIRD COMMUNICATIONS, LLC - NJ 224   2018-10-07   
973-840 7 Caldwell NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2016-03-23   
973-840 8 Caldwell NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2016-03-23   
973-840 9 Caldwell NJ NBWKNJ17QMD  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 224   2018-08-27   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.