Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 623 [Rate centres in NPA 623] [Dial plan for NPA 623]

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-257 A Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666      
623-257 0 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-08-17   
623-257 1 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-08-17   
623-257 2 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-08-17   
623-257 3 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-08-17   
623-257 4 Phoenix AZ PHNXAZMAXQX  587F BANDWIDTH.COM CLEC, LLC - AZ 666   2020-08-17   
623-257 5 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2020-08-19   
623-257 6 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2020-08-19   
623-257 7 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2020-08-19   
623-257 8 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2020-08-19   
623-257 9 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2020-08-24   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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