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: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
973-637 A Whippany NJ FRHDNJ023MD  7421 AT&T - LOCAL 224      
973-637 0 Whippany NJ NWRKNJ0248Z  118F BANDWIDTH.COM CLEC, LLC - NJ 224   2008-12-04   
973-637 1 Whippany NJ NBWKNJNBXKX  3079 US LEC OF PENNSYLVANIA, INC. - NJ 224   2005-06-12   
973-637 2 Whippany NJ JRCYNJBRGMD  2771 LEVEL 3 TELECOM OF NEW JERSEY, LP - NJ 224   2016-06-05   
973-637 3 Whippany NJ WHWKNJAN5MD  4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224   2004-08-19   
973-637 4 Whippany NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2022-11-26   
973-637 5 Whippany NJ FRHDNJ023MD  7421 AT&T - LOCAL 224      
973-637 6 Whippany NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224   2021-12-04   
973-637 7 Whippany NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224   2021-12-04   
973-637 8 Whippany NJ NWRKNJ0209Z  2680 PAETEC COMMUNICATIONS, INC. - NJ 224   2011-12-22   
973-637 9 Whippany NJ FRHDNJ023MD  7421 AT&T - LOCAL 224      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.