Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX: 581

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-581 A Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-581 0 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-10-12   
312-581 1 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-10-12   
312-581 2 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-10-12   
312-581 3 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-10-12   
312-581 4 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-10-12   
312-581 5 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2017-09-21   
312-581 6 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2017-09-21   
312-581 7 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2017-09-21   
312-581 8 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2017-09-21   
312-581 9 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2017-09-21   

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

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