Best Internet Providers in Cobalt, CT
All 6 providers, ranked by coverage, speed and customer ratings
Find internet availability by address in Cobalt, CT
Cobalt has 6 internet service providers, they are sorted by coverage, available speed, and customer rating from our unbiased internet provider report. Fiber, Cable, and Fixed Wireless 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 Cobalt.
Ranks compare Cobalt with the 31,388 US places under 1,000 people, the tiers of our fastest-cities rankings.
The Best Internet in Cobalt, CT at a Glance
Cobalt Internet Providers, Ranked by Coverage, Speed and Customer Ratings
XFINITY
Connection
Customer Rating
Cable
Frontier
Connection
Customer Rating
Fiber
Verizon
Connection
Customer Rating
Fixed Wireless
T-Mobile Home Internet
Connection
Customer Rating
Fixed Wireless
Providers with less than 1% coverage in this city are excluded from the list. To see if one of these providers is available at your home, please use the address search above.
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 Cobalt ratings may vary and are shown below.
Who is the Best Internet Provider in Cobalt, CT?
T-Mobile Home Internet is the best internet provider in Cobalt based on Connecticut customer satisfaction ratings and reviews. Based on our extensive and unbiased survey, T-Mobile Home Internet had the best reviews at the local, state, and national levels versus all available providers in Cobalt, making it a solid recommendation among providers with reviews. T-Mobile Home Internet is an option for 74.32% of the city.
Click here to get T-Mobile Home Internet
or call 1-833-601-2935
Which Providers are Available at my Home in Cobalt?
Coverage changes block by block. Pick a provider and a technology to see where its service reaches: the darker the area, the larger the share of homes it covers. For your exact address, use the address search above.
How Cobalt Compares to Places Its Size
Cobalt's report card score is in the top 25% and its connectivity index is in the top 1%.
| Measure | Cobalt | Rank among US places under 1,000 people | Middlesex County | Connecticut | US | Leader |
|---|---|---|---|---|---|---|
| ISP Report Card inputs: what providers offer here | ||||||
| Fiber availability | 74.3% | top 50% | 92.8% | 93.9% | 71.5% | 6,946 places at 100.0% |
| Average top speed | 7,000 Mbps | top 3% | 6,421 Mbps | 6,892 Mbps | 3,486 Mbps | Fairmount, TN and Falling Water, TN and 5 more (25,000 Mbps) |
| Providers at a typical address | 4.5 | top 44% | 6.2 | 6.8 | 7.1 | Los Prados, PR (15.1) |
| Connectivity index inputs: how much households need and use the internet | ||||||
| People per household | 2.8 | top 15% | 2.3 | 2.5 | 2.7 | Paguate, NM (13.4) |
| Workers who work from home | 16% | top 18% | 17% | 16% | 15% | Boys Town, NE (100%) |
| Homes with a computer, tablet or phone | 99% | top 5% | 95% | 96% | 96% | 1,494 places at 100% |
| Homes with internet | 99% | top 2% | 93% | 93% | 91% | 370 places at 100% |
| Homes on fiber, cable or DSL | 92% | top 1% | 83% | 80% | 76% | 23 places at 100% |
| More about the households here | ||||||
| Homes with a desktop or laptop | 98% | top 1% | 85% | 83% | 81% | 72 places at 100% |
| Median household income | $130,316 | top 3% | $110,718 | $111,414 | $93,246 | 22 places at $250,001 |
| Residents in school (6th grade to college) | 24% | top 2% | 16% | 16% | 16% | University at Buffalo, NY (100%) |
Fiber reaches 74.3% of homes in Cobalt, against 92.8% across Middlesex County and 93.9% across Connecticut. Households in Cobalt are larger than the US average (2.8 people against 2.7); 16% of workers work from home (US 15%); and the median household income is $130,316 (US $93,246).
Our demographic data is sourced from the latest 5-year release of the American Community Survey by the US Census Bureau.
Fiber, 5G, Cable and DSL Internet in Cobalt
Which Fiber Internet Providers are Available in Cobalt?
Frontier Fiber in Cobalt, CT
Availability:
74.3%
Customer Rating:
(119)
Avg. Download Speed
7,000 Mbps
Frontier Communications offers Fiber service to 74.3% of Cobalt homes. Across the city, Frontier Fiber is the only type of service available from the company, with speeds up to 7,000 Mbps
Which Fixed Wireless and LTE Internet Providers are Available in Cobalt?
T-Mobile Home Internet Fixed Wireless in Cobalt, CT
Availability:
74.3%
Customer Rating:
(342)
Avg. Download Speed
80 Mbps
T-Mobile Home Internet offers Fixed Wireless service to 74.3% of Cobalt homes. Across the city, T-Mobile Home Internet Fixed Wireless is the only type of service available from the company, with speeds up to 80 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 15 Mbps throughout the city.
Verizon Fixed Wireless in Cobalt, CT
Availability:
74.3%
Customer Rating:
(362)
Avg. Download Speed
100 Mbps
Verizon offers Fixed Wireless service to 74.3% of Cobalt homes. Across the city, Verizon Fixed Wireless is the only type of service available from the company, with speeds up to 100 Mbps, with speeds from 25 Mpbs up to 300 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 6.0 and as high as 20, with an average of 9.8 Mbps throughout the city.
EarthLink Fixed Wireless in Cobalt, CT
Availability:
20.3%
Customer Rating:
(4)
Avg. Download Speed
25 Mbps
EarthLink offers Fixed Wireless service to 20.3% of Cobalt 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 Cobalt, CT
Availability:
20.3%
Customer Rating:
(205)
Avg. Download Speed
25 Mbps
AT&T offers Fixed Wireless service to 20.3% of Cobalt 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 Cable Internet Providers are Available in Cobalt?
XFINITY Cable in Cobalt, CT
Availability:
74.3%
Customer Rating:
(2077)
Avg. Download Speed
1,782 Mbps
XFINITY from Comcast offers Cable service to 74.3% of Cobalt homes. Across the city, XFINITY Cable is the only type of service available from the company, with speeds up to 1,782 Mbps, with speeds from 1,200 Mpbs up to 2,000 Mbps depending on the address. Upload speeds differ from download speeds, and are as low 35 and as high as 250, with an average of 191 Mbps throughout the city.
Which DSL Internet Providers are Available in Cobalt?
According to the most recently submitted data by internet service providers to the FCC, there are currently no DSL providers available in Cobalt, CT.
Internet in Cobalt by Neighborhood and ZIP Code
Each row links to that place’s page.
Neighborhoods in Cobalt
| Neighborhood | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
ZIP codes in Cobalt
| ZIP code | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|
How Cobalt Compares to Nearby Places
The 10 places nearest to Cobalt that have their own pages are all within 8 miles. Among them, Westchester has the most homes with fiber (100.0%) and Rocky Hill the fewest (67.2%); Cobalt has 74.3%.
| Place | People | Homes with fiber | Average top speed | Providers at a typical address | Report card | Connectivity |
|---|---|---|---|---|---|---|
| Cobalt (this page) | 74 | 74.3% | 7,000 Mbps | 4.5 | B- | 92/100 |
| Middletown | 47,641 | 82.7% | 6,318 Mbps | 6.7 | B+ | 62/100 |
| Rocky Hill | 20,845 | 67.2% | 5,294 Mbps | 6.9 | B | 61/100 |
| Cromwell | 13,798 | 86.1% | 6,277 Mbps | 7.1 | B+ | 68/100 |
| East Hampton | 11,762 | 96.7% | 6,824 Mbps | 5.4 | B+ | 74/100 |
| Portland | 9,574 | 98.4% | 6,924 Mbps | 6.1 | A- | 73/100 |
| South Glastonbury | 5,933 | 89.2% | 6,461 Mbps | 6.8 | B+ | 92/100 |
| Marlborough | 5,854 | 96.7% | 6,810 Mbps | 5.3 | B+ | 92/100 |
| Westchester | 1,831 | 100.0% | 6,971 Mbps | 6 | A- | 79/100 |
| Lake Pocotopaug | 946 | 100.0% | 7,000 Mbps | 5.5 | A- | 69/100 |
| Maromas | 305 | 100.0% | 7,000 Mbps | 5.7 | A- | 71/100 |
Who is the Fastest Internet Provider in Cobalt?
According to unbiased feedback from real internet customers, they reported being happiest with speeds provided by XFINITY from Comcast. On the other hand, based on data provided by the internet providers to the FCC, Frontier Communications 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 Cobalt
| Frontier Communications | 7,000 |
|---|---|
| XFINITY from Comcast | 2,000 |
| Verizon | 300 |
| T-Mobile Home Internet | 100 |
| Viasat | 100 |
| HughesNet | 25 |
| AT&T | 25 |
| EarthLink | 25 |
How fast is your internet?
Test your connection here and see it next to the speeds providers advertise in Cobalt. It takes about 20 seconds and, on a fast line, can move a few hundred MB of data.
Customer Ratings for Cobalt Internet Providers
Based on 68 reviews from Connecticut internet customers, T-Mobile Home Internet is the best internet service provider for Cobalt residents. T-Mobile Home Internet was rated at an average of 4.00 out of 5 in our report for overall customer satisfaction. Verizon wins for second-place in Connecticut, with 3.67 out of 5 stars and 74.3% coverage in Cobalt.
At a national level, based on 4780 national reviews for any of the providers listed above, T-Mobile Home Internet is rated higher than any other provider, with a rating of 4.02 out of 5.
Local, State, and National Ratings for all Cobalt Internet Providers
The table below shows average customer ratings from customers in Cobalt, Connecticut, and customers throughout the country.
| ISP / Tech Type | Cobalt Overall | Connecticut Overall | National Overall | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet |  (0) | (4) | (342) | View Plans | ||
| Verizon | (0) | (6) | (816) | View Plans | ||
| Frontier | (0) | (14) | (177) | View Plans | ||
| XFINITY | (0) | (44) | (2379) | View Plans | ||
| HughesNet | (0) | (0) |  (25) | View Plans | ||
| AT&T | (0) | (0) | (1051) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) |  (12) | View Plans |
Customer Ratings for Internet Provider Speeds in Cobalt
Based on data reported by Cobalt ISPs to the FCC, the fastest speeds in the city are available through Frontier Communications. The company offers speeds up to 7,000 Mbps in Cobalt. Therefore, the average customer can get up to 7,000 Mbps if they’re willing to purchase the fastest subscription tier available at their homes.
However, actual customers rated their satisfaction with internet speed highest with XFINITY from Comcast. This indicates XFINITY reliably delivers speeds expected by the customer based on the plan they are paying for.
| ISP / Tech Type | Cobalt Speed | Connecticut Speed | National Speed | For Service | ||
|---|---|---|---|---|---|---|
| Verizon | (0) | (6) | (816) | View Plans | ||
| XFINITY | (0) | (44) | (2379) | View Plans | ||
| T-Mobile Home Internet | (0) | (4) | (342) | View Plans | ||
| Frontier | (0) | (14) | (177) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AT&T | (0) | (0) | (1051) | View Plans | ||
| EarthLink | (0) | (0) |  (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Who is the Cheapest Internet Provider in Cobalt?
Of the providers in Cobalt, customers rate T-Mobile Home Internet the best for price. Data comes from customers rating their satisfaction with pricing: in Cobalt where enough of them have reviewed a provider, otherwise across Connecticut or the country. This feedback is valuable because it considers price changes and whether the speeds paid for are worth it.
T-Mobile Home Internet is rated 4.00 out of 5 for price, which is higher than the average across all internet providers in the country. Verizon is rated second for affordability, with an average price rating of 3.67 out of 5.
The table below shows how customers in Cobalt, Connecticut, and the United States rated the affordability of their internet service.
Rated Affordability in Cobalt
| ISP / Tech Type | Cobalt Affordability | Connecticut Affordability | National Affordability | For Service | ||
|---|---|---|---|---|---|---|
| T-Mobile Home Internet | (0) | (4) | (342) | View Plans | ||
| Verizon | (0) | (6) | (816) | View Plans | ||
| Frontier | (0) | (14) | (177) | View Plans | ||
| XFINITY | (0) | (44) | (2379) | View Plans | ||
| HughesNet | (0) | (0) | (25) | View Plans | ||
| AT&T | (0) | (0) | (1051) | View Plans | ||
| EarthLink | (0) | (0) | (15) | View Plans | ||
| Viasat | (0) | (0) | (12) | View Plans |
Customer Reviews for Internet Service Providers in Connecticut
Customer Reviews
ISPReports User
XFINITY
August 02, 2026 spotty cell service for phone.
TK
XFINITY Cable
May 16, 2026 My internet provider is reliable and affordable.
A Rocky Hill, CT Customer
T-Mobile Home Internet Fixed Wireless
May 16, 2026 A Hartford, CT Customer
XFINITY Cable
April 28, 2026 Overall Xfinity provided very fast internet. The key is having a router that supports the higher speeds. The area we have struggled with the most is the price. We have gone back and forth with customer service to get lower rates given the more competitive prices being offered by new market entrants. Unfortunately Xfinity won't budge and may soon lose our service as the competitors provide faster speeds at lower cost.
lyssa l
XFINITY Cable
April 26, 2026 I've been using Xfinity for about two years now, and overall, it's been a solid experience. I work remotely and stream a lot of content, and the 200 Mbps plan has been more than enough for my needs. Speeds are consistent, and I rarely experience outages. I especially appreciate the self-service tools in the Xfinity app—it makes managing my plan and checking for issues super easy.
Rate your provider
Share your experience to help others in your area choose.
Verified customer: we detected your connection is on this provider.
Reviews are independent and unedited. Published after a quick spam check.
Which ISP Should You Choose in Cobalt?
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 Cobalt is T-Mobile Home Internet.
- The fastest internet provider should be Frontier Communications. Considering speed for the money and reliability in speeds, XFINITY from Comcast may be a better choice based on real-world local customer feedback.
- The most affordable internet provider in Cobalt is T-Mobile Home Internet.
- XFINITY from Comcast, Viasat, Verizon, T-Mobile Home Internet, HughesNet, and Frontier Communications has the broadest coverage in Cobalt, available to 74.3% of homes, and is most likely to cover your home. To find out exactly what’s available at your home, please use our address search tool.