Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-578 A Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630      
712-578 0 Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630      
712-578 1 Hull IA SXCYIADTCMD  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2013-04-22   
712-578 2 Hull IA SXCYIADTCMD  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2016-08-28   
712-578 3 Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630   2018-04-12   
712-578 4 Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630   2018-04-12   
712-578 5 Hull IA SXCYIA78X9X  5562 METROPCS, INC. 630   2018-07-18   
712-578 6 Hull IA SXCYIADTCMD  6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2020-04-07   
712-578 7 Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630      
712-578 8 Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630      
712-578 9 Hull IA SXCYIA78X9X  6529 T-MOBILE USA, INC. 630      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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