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: 256 [Rate centres in NPA 256] [Dial plan for NPA 256]

NXX: 620

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-620 A Cullman AL HNVIAL964MD  7421 AT&T - LOCAL 477      
256-620 0 Cullman AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477      
256-620 1 Cullman AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477      
256-620 2 Cullman AL HNVIAL18X4X  6804 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 477      
256-620 3 Cullman AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477      
256-620 4 Cullman AL HNVIAL03X9Y  5562 METROPCS, INC. 477      
256-620 5 Cullman AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477      
256-620 6 Cullman AL HNVIALODAMD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 477      
256-620 7 Cullman AL HNVIAL965MD  348E YMAX COMMUNICATIONS CORP. - AL 477      
256-620 8 Cullman AL HNVIAL965MD  348E YMAX COMMUNICATIONS CORP. - AL 477      
256-620 9 Cullman AL HNVIAL964MD  7421 AT&T - LOCAL 477      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.