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Carrier:Cornerstone Telephone Company
This is the Carrier Name:Cornerstone Telephone Company page list. Its detail is as below.
| Prefix | State | Primary city | Usage |
|---|---|---|---|
| (413) 285- | Massachusetts | Springfield | Landline |
| (315) 200- | New York | Syracuse | Landline |
| (518) 860- | New York | Albany | Landline |
| (607) 201- | New York | Binghamton | Landline |
| (845) 214- | New York | Poughkeepsie | Landline |
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