Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 440 [Rate centres in NPA 440] [Dial plan for NPA 440]

NXX: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-677 A Ashtabula OH   6529 T-MOBILE USA, INC. 320   2026-02-19   
440-677 0 Ashtabula OH   6529 T-MOBILE USA, INC. 320   2026-02-20   
440-677 1 Ashtabula OH   6529 T-MOBILE USA, INC. 320   2026-02-20   
440-677 2 Ashtabula OH   6529 T-MOBILE USA, INC. 320   2026-02-20   
440-677 8 Ashtabula OH   6529 T-MOBILE USA, INC. 320   2026-02-20   
440-677 9 Ashtabula OH   6529 T-MOBILE USA, INC. 320   2026-02-19   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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