Local Calling Guide
Area code/prefix search
NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]
NXX: 449
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
312-449 | A | Chicago Zone 01-Calumet | IL | 700J WAVENATION, LLC | 358 | 2025-09-14 | |||
312-449 | 0 | Chicago Zone 01-Calumet | IL | 700J WAVENATION, LLC | 358 | 2025-09-14 |
Last updated: Fri, 25 Jul 2025 03:21:23 UTC
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