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: 779 [Rate centres in NPA 779] [Dial plan for NPA 779]

NXX: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-255 A De Kalb IL DIXNILXA4MD  224C ONVOY, LLC 364      
779-255 0 De Kalb IL DKLBILXAXBX  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 364   2018-12-09   
779-255 1 De Kalb IL DIXNILXA4MD  224C ONVOY, LLC 364   2018-08-01   
779-255 2 De Kalb IL DKLBILRSPMD  5562 METROPCS, INC. 364   2018-10-21   
779-255 3 De Kalb IL DKLBILXAXEX  624H ONVOY SPECTRUM, LLC 364   2021-07-09   
779-255 4 De Kalb IL DKLBILXAXEX  624H ONVOY SPECTRUM, LLC 364   2021-07-09   
779-255 5 De Kalb IL DIXNILXA4MD  224C ONVOY, LLC 364   2018-10-01   
779-255 6 De Kalb IL DKLBILXAXEX  624H ONVOY SPECTRUM, LLC 364   2021-07-09   
779-255 7 De Kalb IL DKLBILXAXEX  624H ONVOY SPECTRUM, LLC 364   2021-10-21   
779-255 8 De Kalb IL DIXNILXA4MD  224C ONVOY, LLC 364   2023-06-05   
779-255 9 De Kalb IL DIXNILXA3MD  073H TELNYX LLC 364   2020-07-06   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.