Cheyenne River Sioux Tribe Telephone Authority (CRST) is a small internet service provider in the United States, serving 1 state or territory: South Dakota. Learn more about CRST's coverage and availability on this page.
Can I get Cheyenne River Sioux Tribe Telephone Authority (CRST) internet in my area?
The easiest way to find out is to click the link below.
You may enter your zip code to check local availability or view the map below before contacting CRST.
Cheyenne River Sioux Tribe Telephone Authority (CRST) Availability Map
Any Internet Availability
On the map you can see CRST's coverage area in the United States. Areas in green are most likely to have coverage, where some homes in yellow to red areas may not have coverage.
The table below shows coverage and average maximum speeds by state.
| State | Availaiblity | Average Best Speed |
|---|---|---|
| South Dakota | 0.83% | 250 Mbps |
How fast is CRST's internet?
Internet Download Speed
The map above shows average maximum speeds by area. Overall, CRST internet speeds are adequate for most homes.
Download speeds (the speed at which you receive files and streaming video) range from 250 to 250 Mbps. The average customer has access to plans with download speeds up to 250 Mbps. This puts CRST in the 35th percentile versus other ISPs for download speeds, meaning speeds are somewhat slower than the average provider in the US.
Upload speeds (the speed you can send files and video to others) range from a low of 100 Mbps to a high of 100 Mbps. The average is 100 Mbps, placing CRST in the 33rd percentile for internet provider upload speeds, which is a little lacking for a modern household.
What broadband services does Cheyenne River Sioux Tribe Telephone Authority (CRST) offer?
Across the country CRST offers fiber internet service. The table below shows which types of service CRST offers and the average maximum speed for each service type. “Coverage” is the percent of CRST customers who can get that type of service.
Technology |
Coverage |
Average Best Speed |
|---|---|---|
Fiber |
100.00% |
250 Mbps |
Can I get CRST TV Service?
Probably. Most fiber optic and cable companies are able to offer some kind of TV service. In either case, you can also get CRST internet and satellite TV.
What cities and zips does Cheyenne River Sioux Tribe Telephone Authority (CRST) serve?
With coverage in 27 cities and 15 zip codes, only the largest are listed below:
City |
Availability |
Average Best Speed |
|---|---|---|
| Eagle Butte, SD | 98.83% | 250 Mbps |
| North Eagle Butte, SD | 100.00% | 250 Mbps |
| Dupree, SD | 97.70% | 250 Mbps |
| Timber Lake, SD | 76.45% | 250 Mbps |
| Cherry Creek, SD | 99.45% | 250 Mbps |
| La Plant, SD | 100.00% | 250 Mbps |
| Isabel, SD | 91.06% | 250 Mbps |
| Green Grass, SD | 95.76% | 250 Mbps |
| Howes, SD | 90.39% | 250 Mbps |
| Whitehorse, SD | 100.00% | 250 Mbps |
| Glad Valley, SD | 97.11% | 250 Mbps |
| Lantry, SD | 100.00% | 250 Mbps |
| Thunder Butte, SD | 100.00% | 250 Mbps |
| Bear Creek, SD | 99.06% | 250 Mbps |
| Gettysburg, SD | 5.65% | 250 Mbps |
| South Forest City, SD | 41.58% | 250 Mbps |
| Mobridge, SD | 1.77% | 250 Mbps |
| Promise, SD | 90.32% | 250 Mbps |
| Trail City, SD | 44.66% | 250 Mbps |
| Forest City, SD | 16.92% | 250 Mbps |
| Orton, SD | 93.55% | 250 Mbps |
| Meadow, SD | 9.71% | 250 Mbps |
| Walker, SD | 48.65% | 250 Mbps |
| Glenham, SD | 3.05% | 250 Mbps |
| Mahto, SD | 20.00% | 250 Mbps |
| Wakpala, SD | 0.75% | 250 Mbps |
| Coal Springs, SD | 2.25% | 250 Mbps |
Zip |
Availability |
Average Best Speed |
| 57625, SD | 99.17% | 250 Mbps |
| 57623, SD | 96.59% | 250 Mbps |
| 57656, SD | 74.97% | 250 Mbps |
| 57652, SD | 99.74% | 250 Mbps |
| 57622, SD | 99.42% | 250 Mbps |
| 57633, SD | 79.45% | 250 Mbps |
| 57442, SD | 8.34% | 250 Mbps |
| 57748, SD | 55.34% | 250 Mbps |
| 57661, SD | 100.00% | 250 Mbps |
| 57636, SD | 100.00% | 250 Mbps |
| 57601, SD | 1.59% | 250 Mbps |
| 57553, SD | 23.30% | 250 Mbps |
| 57644, SD | 9.03% | 250 Mbps |
| 57657, SD | 17.32% | 250 Mbps |
| 57626, SD | 2.07% | 250 Mbps |