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: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-378 A Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
928-378 0 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-07-05   
928-378 1 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-08-08   
928-378 3 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2020-08-13   
928-378 4 Roosevelt Lake AZ PHNXAZ19CMD  516J TON80 COMMUNICATIONS, LLC 666   2021-07-31   
928-378 5 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2022-01-27   
928-378 6 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-01-15   
928-378 7 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-01-15   
928-378 8 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-01-15   
928-378 9 Roosevelt Lake AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-01-15   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.