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i3 Broadband Speed Test

Test your i3 Broadband connection, see whether it is normal for your plan, and find faster internet near you.

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How we measure: a real-world test to a neutral point on the open internet, not a server inside your provider network, so it reflects everyday speed and can read slightly below best-case on-network tests.

We record anonymized results (speed, latency, your provider and coarse location) to publish honest, real-world speed data by provider. No personal information is stored.

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What to Expect from i3 Broadband

Fastest plan8,000 Mbps8,000 Mbps up. The fastest plan i3 Broadband reports to the FCC.
Typical top plan7,694 Mbps7,594 Mbps up, across the areas i3 Broadband serves.
Customers measureSee belowThe median of i3 Broadband customers’ tests on our speed test.
Customers measureNot enough tests yetWe publish what i3 Broadband customers measure once enough of them have run our test.

i3 Broadband’s fastest available plans reach 8,000 Mbps down / 8,000 Mbps up, and across its footprint typical available speeds are about 7,694 Mbps down / 7,594 Mbps up. These are advertised “up to” figures from FCC availability data, so no connection reaches them exactly. Run the test above to see what your own i3 Broadband line actually delivers.

In real-world tests, i3 Broadband typically delivers around a median 335 Mbps down and 235 Mbps up across the plans its customers actually subscribe to.

Most tests land between 134 and 669 Mbps down. That spread mostly reflects which plan each household buys, not how the network performs.

335 Mbps
Median down
235 Mbps
Median up
45 ms
Latency

Measured at the nearest Cloudflare edge, verified by network operator, and shown as a median so a few unusually fast or slow tests do not skew it. Because most customers do not buy the fastest plan, this median should not be read as what i3 Broadband's top tier delivers. Updated daily.

Compare providers near you

Enter your ZIP or city to see how providers in your area compare.

Providers available in your area come from our coverage data. "Available up to" is the fastest advertised plan; measured speeds appear once a provider has enough independent tests, otherwise we say "collecting" rather than guess.

i3 Broadband Speed Ratings

4.24
out of 5
Speed rating
From 29 i3 Broadband customer reviews across the United States.

Connection

Customer Rating

Fiber

Fiber: 4.30 of 5 stars

(27)

Cable

Cable: 3.50 of 5 stars

(2)

No speed ratings for i3 Broadband yet. Rate it after your test, or any time.

Rate i3 Broadband

For detailed reviews, visit our i3 Broadband Internet Reviews page.

Top Cities for i3 Broadband

i3 Broadband is available in 99 cities throughout the country. Here is a list of top cities with i3 Broadband internet service:

St. Louis, MO
  • Availability: 10.86%
  • Avg. Download Speed: 8,000 Mbps
Chicago, IL
  • Availability: 1.22%
  • Avg. Download Speed: 8,000 Mbps
Peoria, IL
  • Availability: 72.82%
  • Avg. Download Speed: 8,000 Mbps
Champaign, IL
  • Availability: 88.14%
  • Avg. Download Speed: 8,000 Mbps
Providence, RI
  • Availability: 2.89%
  • Avg. Download Speed: 2,000 Mbps
St. Peters, MO
  • Availability: 58.63%
  • Avg. Download Speed: 8,000 Mbps
Rockford, IL
  • Availability: 21.62%
  • Avg. Download Speed: 8,000 Mbps
Urbana, IL
  • Availability: 71.81%
  • Avg. Download Speed: 8,000 Mbps
Springfield, IL
  • Availability: 26.33%
  • Avg. Download Speed: 8,000 Mbps
Pekin, IL
  • Availability: 90.58%
  • Avg. Download Speed: 8,000 Mbps
Ballwin, MO
  • Availability: 56.33%
  • Avg. Download Speed: 8,000 Mbps
Lake in the Hills, IL
  • Availability: 84.91%
  • Avg. Download Speed: 8,000 Mbps
St. Charles, MO
  • Availability: 20.82%
  • Avg. Download Speed: 8,000 Mbps
Galesburg, IL
  • Availability: 73.89%
  • Avg. Download Speed: 8,000 Mbps
Bristol, RI
  • Availability: 89.85%
  • Avg. Download Speed: 2,000 Mbps

i3 Broadband Speed Test FAQ

Why is my i3 Broadband speed lower than advertised?

Advertised speeds are “up to” peaks measured on an ideal connection. Real-world speed to a neutral point on the open internet runs a few percent lower, and Wi-Fi, older equipment, or peak-hour congestion lower it further. For the truest read of your i3 Broadband line, test over a wired connection.

How does ISPReports measure i3 Broadband speeds?

Tests run against the nearest of Cloudflare’s edge locations, so the result reflects your access network rather than a server inside i3 Broadband’s own network. We verify each result by network operator, aggregate it as a median (not an average, which a few fast tests would skew), and only publish a provider’s measured speeds once enough independent tests exist. We do not accept provider-submitted numbers.

Is i3 Broadband good for gaming and video calls?

Run the test above. The connection-quality grade reads latency under load and packet loss, which determine whether calls and games stay smooth, beyond the raw download number.

Can I get faster internet than i3 Broadband where I live?

After the test, the result lists the providers in your ZIP code that advertise faster plans than the speed you measured. For the providers at your exact address, check your address on our internet providers by address page.