Local Calling Guide
Area code/prefix search
NPA: 313 [Rate centres in NPA 313] [Dial plan for NPA 313]
NXX: 531
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
313-531 | A | Detroit Zone 5 | MI | DTRTMIRFDS0 | 9323 MICHIGAN BELL TEL CO | 340 |
Last updated: Wed, 20 Nov 2024 21:20:06 UTC
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