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: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX: 262

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-262 A Chicago Zone 01-Calumet IL DWGVILMCPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-262 0 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-262 1 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-262 2 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-08-26   
312-262 3 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2009-03-04   
312-262 4 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2009-03-04   
312-262 5 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2009-03-04   
312-262 6 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2009-03-04   
312-262 7 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-08-26   
312-262 8 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2009-05-22   
312-262 9 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.