AT&T Fiber is available in Costa Mesa. Call 833‑607‑2973 • Sponsored AT&T Fiber is available in Costa Mesa. Get speeds up to 5 Gig. Check availability ↗ or call 833‑607‑2973 • Sponsored
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Costa Mesa has 16 internet options – View all▼
Costa Mesa has two fiber providers, AT&T and Cox. Symmetric speeds of 5,000 Mbps are available in parts of the city.
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| AT&T | 5,000 | 5,000 | 96% |
| Cox | 1,000 | 100 | 6% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Spectrum | 1,000 | 35 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Verizon | 1,000 | 75 | 99% |
| Cosmo Network Solutions | 350 | 150 | 68% |
| MINTernet | 100 | 20 | 100% |
| T-Mobile | 100 | 20 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Starlink | 280 | 30 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Viasat | 100 | 3 | 100% |
| HughesNet | 50 | 5 | 100% |
| Provider | TechnologyTech | Download (Mbps) | Upload (Mbps) | AvailabilityCoverage |
|---|---|---|---|---|
| Frontier | Fiber | 7,000 | 7,000 | 3% |
| Google Fiber | Fiber | 2,000 | 1,000 | 2% |
| Consolidated Smart Broadband Systems | Cable | 500 | 30 | 4% |
| AT&T | DSL/CopperDSL | 100 | 20 | 2% |
| AT&T | Fixed WirelessFixed Wireless | 100 | 20 | 2% |
| Frontier | DSL/CopperDSL | 10-25 | 1-3 | 2% |
Broadband Map's availability estimates are based on the census boundaries of Costa Mesa. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.
Broadband Map's listings of internet providers in Costa Mesa rely primarily on the November 2025 release from the FCC's Broadband Data Collection program (representing Costa Mesa ISPs' availability as of June 2025).