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: 908 [Rate centres in NPA 908] [Dial plan for NPA 908]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
908-521 A Phillipsburg NJ WHWKNJAN5MD  4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224      
908-521 0 Phillipsburg NJ WHWKNJAN5MD  4804 LEVEL 3 COMMUNICATIONS, LLC - NJ 224      
908-521 1 Phillipsburg NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224   2021-12-04   
908-521 2 Phillipsburg NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224   2021-12-04   
908-521 4 Phillipsburg NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2012-02-23   
908-521 5 Phillipsburg NJ PSWYNJBXDS0  999H BLUEBIRD COMMUNICATIONS, LLC - NJ 224   2018-09-21   
908-521 6 Phillipsburg NJ RCPKNJ02XJY  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 224   2020-02-09   
908-521 7 Phillipsburg NJ   145J TERRA NOVA TELECOM INC. 224   2023-08-10   
908-521 8 Phillipsburg NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2023-05-20   
908-521 9 Phillipsburg NJ NBWKNJ17QMD  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 224   2023-10-09   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.