Local Calling Guide
Area code/prefix search
NPA: 857 [Rate centres in NPA 857] [Dial plan for NPA 857]
NXX: 857
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
857-857 | A | Newton | MA | 624H ONVOY SPECTRUM, LLC | 128 | 2025-01-03 | |||
857-857 | 7 | Newton | MA | 624H ONVOY SPECTRUM, LLC | 128 | ||||
857-857 | 8 | Newton | MA | 624H ONVOY SPECTRUM, LLC | 128 | ||||
857-857 | 9 | Newton | MA | 624H ONVOY SPECTRUM, LLC | 128 |
Last updated: Wed, 20 Nov 2024 21:20:06 UTC
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