Xfinity is available in Castle Pines. Call 833-848-2575 • Sponsored Xfinity is available in Castle Pines. Check plans and availability or call 833-848-2575 • Sponsored
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Castle Pines has 15 internet options – View all▼
Castle Pines has two fiber providers, Quantum Fiber and CenturyLink. Download speeds as fast as 2,000 Mbps are available in parts of the city.
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Quantum Fiber | 2,000 | 1,000 | 20% |
| CenturyLink | 1,000 | 1,000 | 20% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Xfinity | 2,000 | 250 | 99% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| CenturyLink | 140 | 100 | 80% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Kellin Communications | 1,000 | 220 | 100% |
| BAM | 1,000 | 100 | 85% |
| Verizon | 300 | 20 | 99% |
| Aerux | 100 | 100 | 61% |
| Xtream Internet | 100 | 40 | 100% |
| MINTernet | 100 | 20 | 100% |
| T-Mobile | 100 | 20 | 100% |
| AT&T | 100 | 20 | 99% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Starlink | 280 | 30 | 100% |
| Provider | DownDownload (Mbps) | UpUpload (Mbps) | AvailabilityCoverage |
|---|---|---|---|
| Viasat | 150 | 3 | 100% |
| HughesNet | 50 | 5 | 100% |
Broadband Map's availability estimates are based on the census boundaries of Castle Pines. Speed metrics capture internet providers' maximum advertised speeds. Both may be overoptimistic.
Broadband Map's listings of internet providers in Castle Pines rely primarily on the November 2025 release from the FCC's Broadband Data Collection program (representing Castle Pines ISPs' availability as of June 2025).