ZIP 91739 Internet
San Bernardino County, California · 1000 Mbps max · 10 providers · Competitive
Score Breakdown, 99/100
Maximum Available Speeds
FCC benchmark: 100 Mbps
FCC benchmark: 20 Mbps
10 Internet Providers in 91739
| Provider | Technology | Download | Upload |
|---|---|---|---|
| At&T California | ADSL2 | 25 Mbps | 3 Mbps |
| Charter Communications INC | Cable (DOCSIS 3.1+) | 1000 Mbps | 35 Mbps |
| At&T California | VDSL | 100 Mbps | 20 Mbps |
| T-Mobile | Fixed Wireless | 25 Mbps | 3 Mbps |
| Comcast | Cable (DOCSIS 3.1+) | 1200 Mbps | 35 Mbps |
| unWired Broadband INC | Fixed Wireless | 30 Mbps | 7 Mbps |
| Verizon California INC Ca Gte | ADSL2 | 18 Mbps | 1 Mbps |
| Verizon California INC Ca Gte | ADSL | 6 Mbps | 1 Mbps |
| Etheric Networks, INC. | Fixed Wireless | 300 Mbps | 300 Mbps |
| Cal.net INC. | Fixed Wireless | 100 Mbps | 20 Mbps |
Fiber Availability
Fiber is available in 91739
Fiber providers:
Nearby ZIP Codes
See how your connection compares to the 1000 Mbps available in 91739.
Frequently Asked Questions
What internet providers are available in ZIP code 91739?
ZIP code 91739 has 10 internet providers. At&T California, Charter Communications INC, At&T California and 7 more serve this area. The fastest available download speed is 1000 Mbps.
What is the Broadband Grade for 91739?
ZIP code 91739 has a Broadband Grade of A (score: 99/100). This grade factors in download speed (100/100), provider competition (100/100), fiber access (94/100), and upload speed (100/100).
Is fiber internet available in 91739?
Yes, fiber-to-the-home (FTTH) internet is available in ZIP code 91739. Fiber providers in this area include .
The this entity record above pulls directly from the FCC Broadband Data Collection (BDC). What follows is the per-entity context — how this entity sits in the broader U.S. internet availability and broadband speed distribution and which underlying factors drive the headline numbers.
Every number on this page links back to the FCC Broadband Data Collection (BDC); the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. ZIPs, counties, and states. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: FCC Broadband Data Collection, 2026.