10 Best Internet Providers in Teheran, IL
Find internet availability by address in Teheran, IL
Jump to: Best Internet Provider | Availability Maps | Customer Reviews | Teheran ISP Report Card | Business Internet in Teheran
| Teheran ISP Report Card | C- | |
| Download Speed for Most Households | 239 Mbps | |
| Number of Internet Service Providers | 10 | |
| Real Teheran Customer Ratings | 0 |
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
This page reflects the most recent FCC update from January 06, 2026, based on the Broadband Data Collection as of June 30, 2025.
Teheran has 10 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Teheran.
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Teheran has 10 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Fixed Wireless, and DSL internet are available in the city. Reviews are grouped by provider and the type of service they offer, covering all 3 available internet technologies in Teheran.
Compare Providers Ranked by Coverage, Speed, and Customer Ratings
CASSCOMM
Connection
Customer Rating
Fiber
Fixed Wireless
Frontier
Connection
Customer Rating
DSL
EarthLink
Connection
Customer Rating
Fixed Wireless
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Above are the top 4 providers in Teheran, IL for most people based on high speed internet coverage, speeds, and customer reviews. Click below to see all providers in your city.
Speed and technology may vary by address for all providers. Please note we may have a financial relationship with some of the providers above, which does not impact the customer ratings displayed. Customer ratings listed above are national ratings, local Teheran ratings may vary and are shown below.
Who is the Best Internet Provider in Teheran, IL?
CASSCOMM is the highest-rated internet provider in Teheran based on 80 Illinois customer reviews, and CASSCOMM has the highest rating nationwide. The provider information above and the information immediately below can help you decide. Compare provider ratings and review counts above. The chart and table below show average customer ratings from customers in Teheran, Illinois, and customers throughout the country.
Top Rated Internet Providers in Teheran
Local, State, and National Ratings for all Teheran Internet Providers
| ISP / Tech Type | Teheran Overall | Illinois Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| CASSCOMM | (0) | (2) | (4) | View Plans | ||
| Verizon | (0) | (10) | (723) | View Plans | ||
| Rise Broadband | (0) | (1) | (18) | View Plans | ||
| T-Mobile Home Internet | (0) | (14) | (284) | View Plans | ||
| AT&T | (0) | (47) | (924) | View Plans | ||
| Frontier | (0) | (4) | (143) | View Plans | ||
| MR Systems Wireless | (0) | (1) | (1) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| US Cellular | (0) | (0) | (15) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| Nextlink | (0) | (0) | (14) | View Plans | ||
| HughesNet | (0) | (0) | (18) | View Plans |
Based on 80 reviews from Illinois internet customers, CASSCOMM is the best internet service provider for Teheran residents. CASSCOMM was rated at an average of 5.00 out of 5 in our report for overall customer satisfaction. MR Systems Wireless wins for second-place in Illinois, with 2.00 out of 5 stars and 70.3% coverage in Teheran.
At a national level, based on 2167 national reviews for any of the providers listed above, CASSCOMM is rated higher than any other provider, with a rating of 4.81 out of 5.
Which Providers are Available at my Home in Teheran?
a different provider.

Internet Availability Key
Speeds and coverage vary within the city, and sometimes even from block to block. The map shows speeds per provider and where each provider is available.
Who is the Fastest Internet Provider in Teheran?
According to unbiased feedback from real internet customers in the city, they reported being happiest with speeds provided by CASSCOMM. On the other hand, based on data provided by the internet providers to the FCC, Nextlink should have faster speeds at a local level. While we typically put more weight on real-world customer ratings, we display both satisfaction and technical maximum information for customers to decide for themselves.
Data Reported to FCC by ISPs: Average Maximum Available in Teheran
| ISP / Tech Type | Max Advertised Speed | ||
|---|---|---|---|
| CASSCOMM | 1,000 Mbps | ||
| Nextlink | 500 Mbps | ||
| Verizon | 300 Mbps | ||
| MR Systems Wireless | 100 Mbps | ||
| T-Mobile Home Internet | 100 Mbps | ||
| Viasat | 100 Mbps | ||
| EarthLink | 25 Mbps | ||
| AT&T | 25 Mbps | ||
| Rise Broadband | 25 Mbps | ||
| HughesNet | 25 Mbps | ||
| Frontier Communications | 10 Mbps | ||
| US Cellular | 10 Mbps |
Customer Ratings for Internet Provider Speeds in Teheran
| ISP / Tech Type | Teheran Speed | Illinois Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| CASSCOMM | (0) | (2) | (4) | View Plans | ||
| T-Mobile Home Internet | (0) | (14) | (284) | View Plans | ||
| Verizon | (0) | (10) | (723) | View Plans | ||
| AT&T | (0) | (47) | (924) | View Plans | ||
| Frontier | (0) | (4) | (143) | View Plans | ||
| Rise Broadband | (0) | (1) | (18) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| MR Systems Wireless | (0) | (1) | (1) | View Plans | ||
| US Cellular | (0) | (0) | (15) | View Plans | ||
| Nextlink | (0) | (0) | (14) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| HughesNet | (0) | (0) | (18) | View Plans |
Based on data reported by Teheran ISPs to the FCC, the fastest speeds in the city are available through Nextlink. The company offers speeds up to 1,000 Mbps in Teheran. Therefore, the average customer can get up to 421 Mbps if they're willing to purchase the fastest subscription tier available at their homes.
Additionally, actual customers in the city rated their satisfaction with internet speed highest with CASSCOMM. This indicates CASSCOMM reliably delivers speeds expected by the customer based on the plan they are paying for.
Who is the Cheapest Internet Provider in Teheran?
Illinois customers rate CASSCOMM as the cheapest internet service provider in state. Data comes from customers in the state rating their satisfaction with pricing. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
CASSCOMM received a local rating of 4.50 out of 5, which is higher than the average across all internet providers in the country. MR Systems Wireless is rated in second place for affordability by the company’s Teheran customers with an average price rating of 2.00 out of 5.
The chart and graph below show how customers in Teheran, Illinois, and the United States rated the affordability of their internet service.
Rated Affordability in Teheran
| ISP / Tech Type | Teheran Affordability | Illinois Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| CASSCOMM | (0) | (2) | (4) | View Plans | ||
| Frontier | (0) | (4) | (143) | View Plans | ||
| Verizon | (0) | (10) | (723) | View Plans | ||
| T-Mobile Home Internet | (0) | (14) | (284) | View Plans | ||
| AT&T | (0) | (47) | (924) | View Plans | ||
| Rise Broadband | (0) | (1) | (18) | View Plans | ||
| MR Systems Wireless | (0) | (1) | (1) | View Plans | ||
| Viasat | (0) | (1) | (11) | View Plans | ||
| US Cellular | (0) | (0) | (15) | View Plans | ||
| Nextlink | (0) | (0) | (14) | View Plans | ||
| EarthLink | (0) | (0) | (12) | View Plans | ||
| HughesNet | (0) | (0) | (18) | View Plans |
Teheran Internet Health Assessment
ISP Reports evaluates the technological infrastructure across the United States. This includes assessing a grade for ISP providers and infrastructure in the city and setting an index number for the digital connectivity of its residents. You can view the ISP Report Card and the Digital Connectivity Index for Teheran below, including the metrics used and how Teheran compares to the rest of Illinois and nation.
| Metric
(hover for details)
|
Teheran | Illinois | USA | ||
|---|---|---|---|---|---|
| Fiber Availability Percent The percentage of households in Teheran that have a Fiber internet connection available to their home. | 66.15% | 44.05% | 67.25% | ||
| Average Download SpeedThe maximum download speed most households can get on average. This is measured by availability in a block group and weighted by the population in that area. | 239 Mbps | 2,791 Mbps | 3,293 Mbps | ||
| Provider CountThe number of providers available for most people. This is a weighted average by block rather than a total for Teheran. | 4.5 | 7.1 | 6.8 |
| Average Household SizeA larger household size in a city indicates that there will be a greater need for bandwidth due to simultaneous usage, multiple devices, and network congestion. | 2.6 | 2.6 | 2.7 | ||
| Work From Home PercentA higher percent of the population working from home indicates bandwidth requirements being more widely needed rather than consolidated to commercial portions of the city. | 14% | 14% | 14% | ||
| Households with DevicesA higher percentage of households with computing devices in the home indicates a higher level of infrastructure needed to support those households. | 98% | 95% | 95% | ||
| Households with InternetA higher percentage of households with internet indicates a higher need for usage and connectivity in people’s daily lives. | 94% | 90% | 90% | ||
| Households with BroadbandA higher percentage of households with a broadband connection (defined as speeds above 25 Mbps) indicates heavier usage needs within these households. | 43% | 74% | 75% | ||
| Broadband Usage vs. AvailabilityThis measures what percentage of households who have a broadband connection to their home actually have an active subscription to that service. | 43% | 75% | 76% |
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Teheran ISP Report Card & Digital Connectivity Index
The ISP Report Card in Teheran is C-, which is much worse than other cities. The local demand for broadband internet connectivity in Teheran is high with a score of 49 / 100 in our Digital Connectivity Index. This means that internet service providers operating in Teheran have done a average job meeting the needs of its residents.
The Teheran ISP Report Card evaluates the city on availability and speed metrics compared to other cities in the United States. ISP Infrastructure can vary greatly and on its own isn’t a perfect measure of what a city needs. Please see our ISP Report Card along with the Digital Connectivity Index above to evaluate how well the connectivity demand is met by the existing infrastructure.
94% of Teheran households have an internet connection despite having 100.00% availability. 43% of households have fiber, cable, or DSL, 30% have satellite, 0% are still on dial-up, and 0% of households have internet but don’t pay for a subscription because it’s subsidized by the Affordable Connectivity Program.
As you can see in the table above, while 43% of households have a broadband connection such as fiber, cable or DSL available to their home, 43% subscribe to it. A very low number of Teheran residents are taking advantage of the available internet infrastructure.
For more details, please visit our ISP Report Card and Digital Connectivity Index pages.
How do Neighboring Cities Compare to Teheran?
- ISP Report Card: C
- Digital Connectivity Index: 36 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 33 / 100
- ISP Report Card: B
- Digital Connectivity Index: 41 / 100
- ISP Report Card: D+
- Digital Connectivity Index: 36 / 100
- ISP Report Card: D-
- Digital Connectivity Index: 43 / 100
- ISP Report Card: D+
- Digital Connectivity Index: 29 / 100
- ISP Report Card: C-
- Digital Connectivity Index: 46 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 48 / 100
- ISP Report Card: B-
- Digital Connectivity Index: 52 / 100
How Much Speed does a Teheran Household Need?
Higher speed is typically preferred, but that comes at a higher price. The average size of a household in Teheran is 2.6, which is smaller than the Illinois average of 2.6 and smaller than the national average of 2.7. Teheran's average household income is $95,826 which is higher than the Illinois average of $93,298 and much higher than the national average of $90,606. Homes with more people living in them and with higher incomes tend to indicate more devices being used more often.
Teheran also has 14% of its population enrolled in school between the 6th grade and college level, this is lower than the Illinois average of 16%. Additionally, 14% of residents work from home, which is lower than the 14% of residents in Illinois who work from home. This and other factors you can see above show us that the community of Teheran has an average need for internet connectivity and speeds.
Compared to the rest of the country, Teheran households are much more technology-engaged. 98% of households have some sort of computing device, 96% have desktops or laptops in the home, and 90% have smartphones. To see what speeds you are currently getting, please visit our internet speed test tool.
Which Fiber Internet Providers are Available in Teheran?
CASSCOMM Fiber in Teheran, IL
CASSCOMM offers Fiber service to 66.2% of Teheran homes. Across the city, CASSCOMM Fiber has speeds up to 121 Mbps, with speeds from 100 Mpbs up to 1,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 25 and as high as 1,000, with an average of 48 Mbps throughout the city. CASSCOMM Fiber is rated lower than other types of internet service available in Teheran from CASSCOMM in terms of customer satisfaction.
Which Cable Internet Providers are Available in Teheran?
According to the most recently submitted data by internet service providers to the FCC, there are currently no cable providers available in Teheran, IL.
Which DSL Internet Providers are Available in Teheran?
Frontier DSL in Teheran, IL
Frontier Communications offers DSL service to 3.1% of Teheran homes. Across the city, Frontier DSL is the only type of service available from the company, with speeds up to 10 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Teheran?
CASSCOMM Fixed Wireless in Teheran, IL
CASSCOMM offers Fixed Wireless service to 88.7% of Teheran homes. Across the city, CASSCOMM Fixed Wireless has speeds up to 38 Mbps, with speeds from 25 Mpbs up to 50 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 5.0, with an average of 4.0 Mbps throughout the city.
T-Mobile Home Internet Fixed Wireless in Teheran, IL
T-Mobile Home Internet offers Fixed Wireless service to 87.2% of Teheran homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 27 Mbps, with speeds from 25 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 3.0 and as high as 20, with an average of 3.5 Mbps throughout the city.
MR Systems Wireless Fixed Wireless in Teheran, IL
MR Systems Wireless offers Fixed Wireless service to 70.3% of Teheran homes. Across the city, MR Systems Wireless Fixed Wireless is the only type of service available from the company, with speeds up to 29 Mbps, with speeds from 10 Mpbs up to 100 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 1.0 and as high as 50, with an average of 15 Mbps throughout the city.
Verizon Fixed Wireless in Teheran, IL
Verizon offers Fixed Wireless service to 46.2% of Teheran homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 300 Mbps
Rise Broadband Fixed Wireless in Teheran, IL
Rise Broadband offers Fixed Wireless service to 34.9% of Teheran homes. Across the city, Rise Broadband Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
Nextlink Fixed Wireless in Teheran, IL
Nextlink offers Fixed Wireless service to 29.7% of Teheran homes. Across the city, Nextlink Fixed Wireless is the only type of service available from the company, with speeds up to 421 Mbps, with speeds from 300 Mpbs up to 500 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 100 and as high as 200, with an average of 160 Mbps throughout the city.
US Cellular Fixed Wireless in Teheran, IL
US Cellular offers Fixed Wireless service to 11.8% of Teheran homes. Across the city, US Cellular Fixed Wireless is the only type of service available from the company, with speeds up to 10 Mbps
EarthLink Fixed Wireless in Teheran, IL
EarthLink offers Fixed Wireless service to 5.6% of Teheran homes. Across the city, EarthLink Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
AT&T Fixed Wireless in Teheran, IL
AT&T offers Fixed Wireless service to 5.6% of Teheran homes. Across the city, AT&T Fixed Wireless is the only type of service available from the company, with speeds up to 25 Mbps
Which ISP Should You Choose in Teheran?
The right ISP for you depends upon your needs, but in general we can make the following suggestions:
- The best all-around internet service provider in Teheran is CASSCOMM.
- The fastest internet provider should be Nextlink. Considering speed for the money and reliability in speeds, CASSCOMM may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Teheran is CASSCOMM.
- Viasat, HughesNet, and CASSCOMM has the broadest coverage in Teheran, and is most likely to cover your home. To find out exactly what's available at your home, please use our address search tool.
How does Teheran compare to other cities with a similar population?
To see how Teheran stacks up on the national level, it's useful to look at some other cities with similarly sized populations. Below you can see a list of these cities and how they compare to Teheran's C- ISP Report Card and 49 / 100 Digital Connectivity Index.
- ISP Report Card: D-
- Digital Connectivity Index: 29 / 100
- ISP Report Card: C
- Digital Connectivity Index: 27 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 34 / 100
- ISP Report Card: A
- Digital Connectivity Index: 76 / 100
- ISP Report Card: D-
- Digital Connectivity Index: 34 / 100
- ISP Report Card: D-
- Digital Connectivity Index: 33 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 29 / 100
- ISP Report Card: C+
- Digital Connectivity Index: 43 / 100
- ISP Report Card: F
- Digital Connectivity Index: 33 / 100
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