Granite
granitenet.com · Other · Other
Granite Telecommunications is a competitive telecommunications carrier based in Quincy, Massachusetts. Founded in 2002, the company specializes in voice, data, and cloud solutions for multi-location businesses and governmental agencies across the United States and Canada.
Company facts
| Founded | 2002 (24 years) |
| Latest funding | Other |
| Employees | 2,300 |
| Headquarters | Quincy, United States |
| Trusted networks on Proven | 3 investor, bank and government networks offer Granite to their members |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.