Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 313 [Rate centres in NPA 313] [Dial plan for NPA 313]

NXX: 253

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-253 A Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 0 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 1 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 2 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 3 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 4 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 5 Detroit Zone 6 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2013-08-30   
313-253 6 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 7 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 8 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      
313-253 9 Detroit Zone 6 MI DRBRMIFBDS0  9323 MICHIGAN BELL TEL CO 340      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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