Internet in Guyancourt

Guyancourt residents have run speed tests on 7 providers. This number is 167.18% above the France average of 2.62 providers. ISPs available in Guyancourt include Numericable, Bouygues Telecom ISP, and Free. The most common provider in Guyancourt is Numericable, with a maximum recorded speed of 938.05 Mbps, and the typical home user seeing speeds in the range of 40.54—210.17 Mbps. Guyancourt's fastest provider is also Numericable, and the highest speed we've seen from them is 938.05 Mbps. Overall, the average real-world speed users will see in Guyancourt is 33.2 Mbps, which is 110.39% above the France national average of 15.78 Mbps, and 21.33% below the average of 42.2 Mbps in Yvelines. Internet speeds in Guyancourt are typically faster than Mantes-la-Ville, but slower than Medan. Nearby cities include Troux with speeds 31.02—247.24 Mbps, Voisins-le-Bretonneux with speeds 16.92—98.81 Mbps, and Saint-Cyr-l'École with speeds 14.94—144.45 Mbps.


  • 40.54—210.17
  • 28.8—138.22
  • 13.4—130.14
  • 17.86—99
    No homepage
  • 3.78—10.42
  • IPeva
    No homepage

Internet in Guyancourt


Fastest city in France


Best speed range city in Yvelines

938.05 Mbps

Guyancourt's fastest speed

19.75—129.17 Mbps

Typical speed range available to Guyancourt residents

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How Guyancourt Compares to Major Cities

City / TownMax SpeedTypical Speed Range50% 
Paris4508.87 Mbps87.82—491.52 Mbps121.95 MbpsFaster
Toulouse2037.07 Mbps16.92—129.49 Mbps33.44 MbpsFaster
Strasbourg2284.15 Mbps20.26—226.67 Mbps34.26 MbpsFaster
Guyancourt938.05 Mbps19.75—129.17 Mbps33.2 Mbps-
Lyon677.5 Mbps23.9—67.11 Mbps31.78 MbpsSlower
Nice936.08 Mbps14.69—155.02 Mbps29.06 MbpsSlower
Nantes1336.2 Mbps14.31—205.96 Mbps28.12 MbpsSlower
Montpellier931.24 Mbps13.68—120.02 Mbps24.99 MbpsSlower
Bordeaux913.46 Mbps16.15—167.13 Mbps29.48 MbpsSlower
Lille935.73 Mbps8.38—52.4 Mbps10.04 MbpsSlower

Guyancourt Over Time

How Guyancourt Compares for Internet Speed in Yvelines

PositionCity / TownMax SpeedTypical Speed Range50% 
44Montesson2057.8 Mbps23.19—187.97 Mbps38.14 MbpsFaster
45Medan301.17 Mbps30.32—98.54 Mbps37.1 MbpsFaster
46Guyancourt938.05 Mbps19.75—129.17 Mbps33.2 Mbps-
47Mantes-la-Ville926.94 Mbps20.51—144.94 Mbps32.51 MbpsSlower
48Andresy925.76 Mbps23.49—104.95 Mbps32.25 MbpsSlower

Guyancourt Speed Test Results

We analysed the results of people in Guyancourt test providers multiple times, with each test starting no more than 30 minutes after the previous speed test. On average, people in Guyancourt ran 3 speed tests per session. Looking at download speeds, if the Guyancourt resident's final test is 10% faster than their starting download speed, we count that as a succesful and faster speed test result. We count an unsuccessful, slower result if the final result is 10% slower than the starting result; we'd hope their ISP contacts them ASAP! For speed tests that don't vary by that much, we consider the final result to be the same. For Guyancourt's residents, of the speed tests we measured, 35.29% were fast, 25% slow, and 39.71% broadly the same.
Most Recent Tests
ProviderStart Time# TestsDurationStart SpeedEnd SpeedStatus
Bouygues Telecom ISP21 Feb 2021 17:22:38323 mins23.37 Mbps24.76 Mbps
Numericable21 Feb 2021 16:50:34235 secs393.44 Mbps455.5 MbpsImproved
Bouygues Telecom ISP11 Feb 2021 19:39:32224 secs73.3 Mbps79.99 Mbps
Bouygues Telecom ISP11 Feb 2021 10:40:03277 secs6.84 Mbps6.41 MbpsNeeds help, very slow
Numericable11 Feb 2021 03:22:20353 secs26.14 Mbps25.55 Mbps
Bouygues Telecom ISP09 Feb 2021 10:26:10212 mins6.36 Mbps6.43 MbpsNeeds help, very slow
Bouygues Telecom ISP09 Feb 2021 08:50:2048 mins26.9 Mbps92.42 MbpsImproved
Bouygues Telecom ISP08 Feb 2021 14:11:07222 secs66.86 Mbps76.73 MbpsImproved
Bouygues Telecom ISP08 Feb 2021 14:07:03280 secs5.3 Mbps4.16 MbpsNeeds help, very slow
Bouygues Telecom ISP06 Feb 2021 14:50:32256 secs49.97 Mbps70.73 MbpsImproved
Numericable05 Feb 2021 16:13:22232 secs189.1 Mbps51.41 MbpsNeeds help
Bouygues Telecom ISP02 Feb 2021 17:50:41310 mins29.11 Mbps32.77 MbpsImproved
Bouygues Telecom ISP02 Feb 2021 14:32:54967 mins320.65 Mbps128.79 MbpsNeeds help
Numericable31 Jan 2021 15:05:3342 mins6.43 Mbps28.37 MbpsImproved
Bouygues Telecom ISP28 Jan 2021 16:36:57210 mins0.75 Mbps123.63 MbpsImproved
Numericable25 Jan 2021 23:07:32263 secs56.45 Mbps40.69 MbpsNeeds help
SFR Group24 Jan 2021 19:59:05510 mins266.46 Mbps61.91 MbpsNeeds help
Bouygues Telecom ISP24 Jan 2021 20:03:283100 secs104.83 Mbps238.89 MbpsImproved
Numericable24 Jan 2021 17:03:2452 mins14.61 Mbps10.21 MbpsNeeds help
Numericable23 Jan 2021 17:51:47325 mins53.28 Mbps51.12 Mbps

Summary of Internet Service Providers in Guyancourt

#Provider NameMax SpeedTypical Speed Range
1Numericable938.05 Mbps40.54—210.17 Mbps
2SFR Group731.19 Mbps28.8—138.22 Mbps
3Bouygues Telecom ISP891.08 Mbps17.86—99 Mbps
4Orange France564.76 Mbps13.4—130.14 Mbps
5ALSATIS56.46 Mbps2.25—22.81 Mbps
6IPeva8.98 Mbps0—6.38 Mbps
7Free293.59 Mbps3.78—10.42 Mbps

Frequently Asked Questions about Internet Providers in Guyancourt

Guyancourt has 7 ISPs tested by its 31,989 residents.
Numericable is the fastest provider in Guyancourt with 938.05 Mbps, and an average speed range of 40.54—210.17 Mbps.
The best provider in Guyancourt in Numericable, and their users typically see speeds in the range of 40.54 to 210.17 Mbps.
Users in Guyancourt see an average internet speed of 19.75 up to 1121 Mbps, and the fastest speed we've seen is 938.05 Mbps.
Numericable is available in Guyancourt, and the fastest speed we've seen from them is 938.05 Mbps.
Bouygues Telecom ISP is available in Guyancourt, and the fastest speed we've seen from them is 891.08 Mbps.
Free is available in Guyancourt, and the fastest speed we've seen from them is 293.59 Mbps.
The provider with the most users in Guyancourt is Numericable.

Last updated: 26 Feb 2021