Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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 NWRKNJ02Y8X  7421 AT&T - LOCAL 224      
973-637 0 Whippany NJ   118F BANDWIDTH.COM CLEC, LLC - NJ 224   2008-12-04   
973-637 1 Whippany NJ   829J PAETEC ITEL, LLC 224   2005-06-12   
973-637 2 Whippany NJ   2771 LEVEL 3 TELECOM OF NEW JERSEY, LP - NJ 224   2016-06-05   
973-637 3 Whippany NJ   4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224   2004-08-19   
973-637 4 Whippany NJ   637C ONVOY, LLC - NJ 224   2022-11-26   
973-637 5 Whippany NJ   7421 AT&T - LOCAL 224      
973-637 6 Whippany NJ   624H ONVOY SPECTRUM, LLC 224   2021-12-04   
973-637 7 Whippany NJ   624H ONVOY SPECTRUM, LLC 224   2021-12-04   
973-637 8 Whippany NJ   829J PAETEC ITEL, LLC 224   2011-12-22   
973-637 9 Whippany NJ   7421 AT&T - LOCAL 224      

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

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