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#1 Recommended Plan
1. AT&T 
Speeds Up To300 MbpsIn rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a min. of 30 min.Connection: 5G InternetAvailability: 66.9%Why AT&T? AT&T Internet Air makes buying internet easy for customers by offering one plan with straightforward pricing and reliable 5G speeds. -
2. Optimum 
Speeds Up To8 GbpsNot all internet speeds available in all areas.Connection: Cable, FiberAvailability: 77.3%LIMITED TIME OFFER FOR OPTIMUM CUSTOMERSGet up to 3 Months FREE Internet when you sign up for 1 Gig Internet with autopay!1st Month free will be applied as a bill credit, with remaining 2 months paid out in the form of a gift card at month 6 and 12 for the internet price only. Customer must maintain Autopay/Paperless bill through the first 12 mos. Addl terms apply. Offer ends at 3/1/26 at 11:59PM ET. See details. -
3. Frontier 
Download Speeds:200 Mbps - 7 GbpsNot all internet speeds available in all areas. Real-world speeds are impacted by multiple factors and average speeds may be lower than advertised speeds.Connection: Fiber, DSLAvailability: 99% -
4. EarthLink 
Download Speeds:500 Mbps - 2 GbpsNot all internet speeds available in all areas.Connection: FiberAvailability: 95.5% -
5. T-Mobile 
Download Speeds:87 Mbps - 415 MbpsRely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details.Connection: 5G InternetAvailability: 40% -
Verizon 
Speeds Up To300 MbpsNot all internet speeds available in all areas.Connection: 5G InternetAvailability: 16.2% -
7. XNET WiFi 
Speeds Up To2 GbpsNot all internet speeds available in all areas.Connection: Fixed WirelessAvailability: 48.2% -
8. Starlink 
Speeds Up To350 MbpsNot all internet speeds available in all areas.Connection: SatelliteAvailability: 100% -
9. Hughesnet 
Speeds Up To100 MbpsNot all internet speeds available in all areas.Connection: SatelliteAvailability: 100%
Internet Providers in Old Greenwich, CT
Refine your search for better results:
Popular Old Greenwich Internet Deals
| Provider | Featured deal | |
|---|---|---|
| Optimum | Get up to 4 months free when you sign up today! Applies only to 1 Gig plan or higher speeds (3 months free for 1 Gig, 2 Gig, 5 Gig plans — 4 months free for 8 Gig plan) |
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| Frontier | Get Frontier Fiber 200, Fiber 500, or Fiber 1 Gig for $0 for 6 mos when you bundle with Verizon Mobile! Ltd avail/time. Credits in 2-3 bills. Enrollment, fees, terms, ETF apply. Max wired speed. |
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| T-Mobile | Limited time. Get a $300 rebate (via virtual prepaid Mastercard) when you activate a new T-Mobile Internet line on an eligible All-In Home Internet plan! |
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| Verizon | Get a 43" Class QF QLED Samsung TV or Samsung Galaxy Tab S10 FE 5G on us! |
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| XNET WiFi | Get unlimited data and Wi-Fi that works anywhere with XNET WiFi! |
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Old Greenwich Home Internet Providers
| Provider | Plans starting at | Speeds up to | Connections | |
|---|---|---|---|---|
| Frontier | $29.99/mo Prices may vary depending on the plan. | 200 Mbps - 7 Gbps Not all internet speeds available in all areas. Real-world speeds are impacted by multiple factors and average speeds may be lower than advertised speeds. | Fiber, DSL |
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| Verizon | $35/mo Prices may vary depending on the plan. | 300 Mbps Not all internet speeds available in all areas. | 5G Internet |
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| Hughesnet | $39.99/mo Prices may vary depending on the plan. | 100 Mbps Not all internet speeds available in all areas. | Satellite |
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| Optimum | $40/mo Prices may vary depending on the plan. | 8 Gbps Not all internet speeds available in all areas. | Cable, Fiber |
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| T-Mobile | $50/mo Prices may vary depending on the plan. | 87 Mbps - 415 Mbps Rely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details. | 5G Internet |
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| Starlink | $59/mo Prices may vary depending on the plan. | 350 Mbps Not all internet speeds available in all areas. | Satellite |
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| EarthLink | $59.95/mo Prices may vary depending on the plan. | 500 Mbps - 2 Gbps Not all internet speeds available in all areas. | Fiber |
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| AT&T | $65/mo Price is per month, plus taxes. Price after discounts: $13/mo w/elig wireless svc. and $5/mo w/elig Autopay & Paperless bill. Discounts start w/in 2 bills. | 300 Mbps In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a min. of 30 min. | 5G Internet |
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| XNET WiFi | $65/mo Prices may vary depending on the plan. | 2 Gbps Not all internet speeds available in all areas. | Fixed Wireless |
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Best Internet Providers in Old Greenwich, CT
Frontier is the best overall internet provider in Old-Greenwich, Connecticut. Frontier offers a reliable fiber-optic network with symmetrical speeds reaching up to 7 Gbps and covers 99.0% of the city. As an alternative, Optimum delivers cable internet to 25.1% of the area with speeds up to 940 Mbps. Pricing for Frontier starts at just $29.99 per month.
| Provider | Why they're great | Who they're great for | |
|---|---|---|---|
| AT&T | No annual contracts | AT&T Internet Air is ideal for renters and flexible households who want high-speed internet without being locked into an annual contract. |
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| Optimum | Excellent bundle savings | Optimum is an incredible value for customers looking to maximize their monthly savings by pairing their home internet with a mobile plan. |
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| Frontier | Cheapest provider | Budget-conscious customers wanting reliable, high-speed fiber at a very competitive introductory rate will find a great option in Frontier. |
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| T-Mobile | Easy installation | T-Mobile 5G Home Internet is perfect for customers who want to skip the technician and get online in minutes with a simple, app-guided setup. |
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| Starlink | Widely available | Homes off the beaten path reaching remote locations that traditional internet networks ignore will find the ultimate solution in Starlink. |
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Old Greenwich Cheapest Internet Plans
Frontier offers the cheapest internet plans in Old-Greenwich, Connecticut. Frontier provides symmetrical fiber internet starting at an affordable $29.99 per month. If you prefer a wireless alternative, Verizon 5G Home Internet plans begin at $35 per month for speeds up to 300 Mbps. Frontier top-tier plans top out at $109.99 per month.
| Provider | Plan name | Price | Speeds up to | |
|---|---|---|---|---|
| Optimum | Optimum 200 | $25/mo Prices may vary depending on the plan. | 200 Mbps Not all internet speeds available in all areas. |
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| Frontier | Fiber 500 | $29.99/mo Prices may vary depending on the plan. | 500 Mbps Not all internet speeds available in all areas. Real-world speeds are impacted by multiple factors and average speeds may be lower than advertised speeds. |
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| Verizon | Verizon Home Internet Lite | $35/mo Prices may vary depending on the plan. | 25 Mbps Not all internet speeds available in all areas. |
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| EarthLink | EarthLink Fiber 1 Gig | $39.95/mo Prices may vary depending on the plan. | 1 Gbps Not all internet speeds available in all areas. |
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| Hughesnet | Lite | $39.99/mo Prices may vary depending on the plan. | 25 Mbps Not all internet speeds available in all areas. |
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Fastest Internet Providers in Old Greenwich, CT
Optimum is the fastest internet provider in Old-Greenwich, Connecticut. Optimum delivers ultra-fast symmetrical speeds up to 8 Gbps across 77.3% of the city. Frontier is a remarkably close competitor, offering top symmetrical speeds up to 7 Gbps. Optimum premium plans cost $120 per month, delivering peak performance for heavy users.
| Provider | Speeds up to | Connection type | |
|---|---|---|---|
| Optimum | 8 Gbps Not all internet speeds available in all areas. | Fiber |
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| Frontier | 200 Mbps - 7 Gbps Not all internet speeds available in all areas. Real-world speeds are impacted by multiple factors and average speeds may be lower than advertised speeds. | Fiber |
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| EarthLink | 500 Mbps - 2 Gbps Not all internet speeds available in all areas. | Fiber |
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| XNET WiFi | 2 Gbps Not all internet speeds available in all areas. | Fixed Wireless |
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| T-Mobile | 87 Mbps - 415 Mbps Rely, All-In, and Amplified Internet plans can experience fast speeds with T-Mobile’s latest 5G gateway, delivering typical download speeds between 133 Mbps – 415 Mbps. 25% of our customers see speeds below and 25% see speeds above these ranges. T-Mobile Home Internet is delivered via 5G cellular network and speeds vary due to factors affecting cellular networks. See https://t-mobile.com/OpenInternet for additional details. | 5G Internet |
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Compare Top Providers in Your Area
- AT&T Internet vs. Frontier
- AT&T Internet vs. T-Mobile 5G Home Internet
- AT&T Internet vs. Verizon 5G Home Internet
- EarthLink vs. AT&T Internet
- EarthLink vs. Optimum
- Frontier vs. EarthLink
- Hughesnet vs. T-Mobile 5G Home Internet
- Hughesnet vs. Verizon 5G Home Internet
- Optimum vs. Frontier
- T-Mobile 5G Home Internet vs. Verizon 5G Home Internet
Check Your Current Speed
What's a Good Internet Speed?
| Internet speed | Appropriate for | Providers in your area offering this speed | Availability in your area |
|---|---|---|---|
| 100 Mbps |
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100% |
| 1000 Mbps (1 Gbps) |
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99% |
Internet Availability in Old Greenwich, CT
Frontier boasts the best internet availability in Old-Greenwich, Connecticut. Frontier covers 99.0% of the area with fast symmetrical fiber, providing speeds up to 7 Gbps. For off-grid options, Starlink satellite reaches 100.0% of the city. Starlink pricing begins at $59 per month, while Frontier starts at a lower $29.99 per month.
| Connection type | Provider with most coverage | Old Greenwich availability | Starting price | |
|---|---|---|---|---|
| Satellite | Hughesnet | 100% | $39.99/mo |
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| Fiber | Frontier | 99% | $29.99/mo |
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| 5G Internet | AT&T Internet Air | 66.9% | $65/mo |
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| Fixed Wireless | XNET WiFi | 48.2% | $65/mo |
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| Cable | Optimum | 25.1% | $40/mo |
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| DSL | Frontier | 0.5% | $64.99/mo |
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Old Greenwich Internet Stats
| Average internet monthly cost | Available speed ranges | Available price range | Available connection types |
|---|---|---|---|
| $68.33 | 25 Mbps - 8 Gbps | $20/mo - $165/mo | 5G Internet, Cable, DSL, Fiber, Fixed Wireless, Satellite |
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Fastest Speed
OptimumFiber
8 Gig Fiber Internet$120/mo*Taxes & fees extra and subj. to change. See disclaimer for details. Restrictions apply. See offer details
Free HBO Max for 12 months | 5-Year Price Lock-
Download Speeds up to 8 Gbps
Show Details -
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Best Value
AT&T Internet Air5G Internet
Internet Air$65/mo*Price is per month, plus taxes. Not available in all areas. Price after discounts: 20% w/elig wireless and $5/mo with AutoPay. Discount applied w/in 2 bills. See offer details
$100 Visa Reward Card | Save 20% with Eligible AT&T Wireless Plan-
Download Speeds up to 300 Mbps
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Perfect speeds for most families
Show Details -
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Lowest Price
FrontierFiber
Fiber 200$29.99/mo*Taxes & fees extra and subj. to change. See disclaimer for details. Restrictions apply. See offer details
$0 for 6 mos w/ Verizon Mobile-
Download Speeds up to 200 Mbps
Show Details -
Internet Coverage Map and Store Locations for Old Greenwich, Connecticut
Methodology
Our provider rankings rely on a rigorous, data-driven framework evaluating over 100 million rows of FCC data to bring transparency to local internet options. We track 8,000+ active plans from 2,000+ providers to cut through marketing jargon. We weigh technical factors against real-world experiences to match you with the best connections actually available at your address:
- Tested Technology:
- Realistic Coverage:
- Transparent Pricing:
- Verified Speeds:
- User-Driven Personalization:
We utilize a fiber-first ranking system, prioritizing high-performance, structurally sound technologies (like fiber and cable) over slower legacy connections.
We filter out "ghost ISPs" with near-zero availability and actively flag providers that only cover a fraction of neighborhoods, ensuring you don't waste time on unavailable options.
We track base rates and downgrade providers that rely on hidden fees or sudden price hikes, exposing the true long-term cost beyond initial marketing promotions.
We look beyond deceptive "up to" marketing claims to evaluate the actual download and upload speeds delivered, prioritizing the balanced, symmetrical performance necessary for seamless video calls and heavy streaming.
We don't just look at the tech; we look at what people actually prefer. By analyzing millions of local connections, user reviews on downtime, and validated J.D. Power scores, we tailor our rankings to highlight the providers proven to satisfy users in your area.
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Data valid as of 03/15/2026