AT&T Fiber is available in Martinez. Call 833‑607‑2973 • Sponsored AT&T Fiber is available in Martinez. Get speeds up to 5 Gig. Check availability ↗ or call 833‑607‑2973 • Sponsored
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Martinez has 12 internet options – View all▼
Martinez has two fiber providers, AT&T and Astound. Symmetric speeds of 5,000 Mbps are available in parts of Martinez.
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 5,000 | 5,000 | 54% |
| Astound | 5,000 | 5,000 | 4% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Xfinity | 2,000 | 2,000 | 99% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 100 | 20 | 99% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Unwired Ltd | 300 | 25 | 100% |
| Verizon | 300 | 20 | 99% |
| AT&T | 100 | 20 | 99% |
| T-Mobile | 100 | 20 | 99% |
| MINTernet | 100 | 20 | 99% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Starlink | 280 | 30 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Viasat | 150 | 3 | 100% |
| HughesNet | 100 | 5 | 100% |
Broadband Map's availability estimates are based on the census boundaries of Martinez. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.
Broadband Map's listings of internet providers in Martinez rely primarily on the May 2026 release from the FCC's Broadband Data Collection program (representing Martinez ISPs' availability as of December 2025).