Local Calling Guide
Area code/prefix search
NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]
NXX: 545
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
520-545 | A | Tucson | AZ | TCSMAZSJAMD | 7552 LEVEL 3 TELECOM OF ARIZONA, LLC - AZ | 668 |
Last updated: Wed, 20 Nov 2024 21:20:06 UTC
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