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: 640 [Rate centres in NPA 640] [Dial plan for NPA 640]

NXX: 235

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
640-235 A Lawrenceville NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222      
640-235 0 Lawrenceville NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222   2023-01-18   
640-235 1 Lawrenceville NJ CMDNNJCEX1Z  939H COMMIO, LLC 222   2023-10-02   
640-235 2 Lawrenceville NJ CMDNNJCEX1Z  939H COMMIO, LLC 222   2023-10-02   
640-235 3 Lawrenceville NJ CMDNNJCEX1Z  939H COMMIO, LLC 222   2023-10-02   
640-235 4 Lawrenceville NJ CMDNNJCEX1Z  939H COMMIO, LLC 222   2023-10-02   
640-235 5 Lawrenceville NJ CMDNNJCEX1Z  939H COMMIO, LLC 222   2023-10-02   
640-235 6 Lawrenceville NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2023-06-18   
640-235 7 Lawrenceville NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222   2022-12-09   
640-235 8 Lawrenceville NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222   2022-12-09   
640-235 9 Lawrenceville NJ CMDNNJCECM2  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 222   2022-12-09   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.