Local Calling Guide
Area code/prefix search
NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]
NXX: 256
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
650-256 | A | South San Francisco | CA | SNFCCA21XUY | 9748 AMERICAN MESSAGING SERVICES, LLC | 722 |
Last updated: Fri, 25 Jul 2025 03:21:23 UTC
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