Area Code 857 — Carriers, Line Types & Portability
Carrier breakdown and line-type data for area code 857 (MA), across 35 analyzed numbers. Useful for bulk-validating 857 calling lists and spotting VoIP/ported numbers before you dial or text.
Carriers in area code 857
| Carrier | Numbers analyzed |
|---|---|
| T-Mobile | 15 |
| AT&T | 10 |
| Verizon Wireless | 8 |
| Bandwidth.com | 1 |
| Dish Wireless | 1 |
Line types in 857
| Line type | Numbers analyzed |
|---|---|
| WIRELESS | 19 |
| PCS | 15 |
| CLEC | 1 |
Top rate centers
| Rate center | Numbers analyzed |
|---|---|
| BOSTON | 19 |
| BRIGHTON | 5 |
| BROOKLINE | 4 |
| ROXBURY | 3 |
| WINTHROP | 2 |
| CHARLESTN | 1 |
| DORCHESTER | 1 |
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