Internet in Guyancourt

Guyancourt residents have run speed tests on 7 providers. This number is 176.68% above the France average of 2.53 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 36.29—189.06 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 32.08 Mbps, which is 128.17% above the France national average of 14.06 Mbps, and 6.61% below the average of 34.35 Mbps in Yvelines. Internet speeds in Guyancourt are typically faster than Andresy, but slower than Verneuil-sur-Seine. Nearby cities include Troux with speeds 25.34—220.54 Mbps, Voisins-le-Bretonneux with speeds 17.67—96.15 Mbps, and Saint-Cyr-l'École with speeds 15.56—132.38 Mbps.


  • 36.29—189.06
  • 17.05—102.68
  • 10.37—69.19
  • 4.87—17.4
    No homepage
  • 3.63—10.02
  • IPeva
    No homepage

Internet in Guyancourt


Fastest city in France


Best speed range city in Yvelines

938.05 Mbps

Guyancourt's fastest speed

20.18—111.86 Mbps

Typical speed range available to Guyancourt residents

How Guyancourt Compares to Major Cities

City / TownMax SpeedTypical Speed Range50% 
Paris4508.87 Mbps77.81—450.37 Mbps93.98 MbpsFaster
Guyancourt938.05 Mbps20.18—111.86 Mbps32.08 Mbps-
Lyon677.5 Mbps19.91—67.16 Mbps28.84 MbpsSlower
Toulouse2037.07 Mbps14.72—127.72 Mbps27.47 MbpsSlower
Nice908.73 Mbps13.41—133.76 Mbps24.89 MbpsSlower
Nantes944.71 Mbps13.64—172.5 Mbps25.76 MbpsSlower
Strasbourg942.44 Mbps16.56—198.61 Mbps27.75 MbpsSlower
Montpellier929.63 Mbps11.73—92.48 Mbps20.63 MbpsSlower
Bordeaux929.12 Mbps14.21—137.64 Mbps24.82 MbpsSlower
Lille928.28 Mbps16.43—101.38 Mbps30.04 MbpsSlower

Guyancourt Over Time

How Guyancourt Compares for Internet Speed in Yvelines

PositionCity / TownMax SpeedTypical Speed Range50% 
40Limay930.46 Mbps21.88—164.81 Mbps34.52 MbpsFaster
41Verneuil-sur-Seine897.23 Mbps22.52—131.04 Mbps34.35 MbpsFaster
42Guyancourt938.05 Mbps20.18—111.86 Mbps32.08 Mbps-
43Andresy898.54 Mbps22.89—91.05 Mbps31.51 MbpsSlower
44Meulan-en-Yvelines833.62 Mbps22.3—94.1 Mbps31.46 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, 43.9% were fast, 21.95% slow, and 34.15% broadly the same.
Most Recent Tests
ProviderStart Time# TestsDurationStart SpeedEnd SpeedStatus
Bouygues Telecom ISP16 Oct 2020 12:31:58213 secs13.59 Mbps14.18 Mbps
Bouygues Telecom ISP16 Oct 2020 09:56:39254 secs3.56 Mbps23.27 MbpsImproved
Orange France11 Oct 2020 19:07:16231 secs58.28 Mbps139.31 MbpsImproved
Numericable10 Oct 2020 16:56:04237 secs6.04 Mbps3.97 MbpsNeeds help, very slow
Numericable02 Oct 2020 20:35:4123 mins91.23 Mbps172.81 MbpsImproved
Bouygues Telecom ISP24 Sep 2020 22:25:48254 secs15.99 Mbps16.12 Mbps
SFR Group23 Sep 2020 06:54:08227 secs43.22 Mbps49.51 MbpsImproved
Numericable22 Sep 2020 15:28:59213 mins1.13 Mbps50.08 MbpsImproved
Bouygues Telecom ISP21 Sep 2020 17:16:33212 mins30.83 Mbps27.87 Mbps
Bouygues Telecom ISP21 Sep 2020 06:18:14242 secs35.4 Mbps37.72 Mbps
Bouygues Telecom ISP20 Sep 2020 17:15:1825 mins36.92 Mbps91.97 MbpsImproved
Bouygues Telecom ISP20 Sep 2020 15:40:48484 secs6.82 Mbps7.78 MbpsNeeds help, very slow
Bouygues Telecom ISP18 Sep 2020 20:00:3324 mins107.07 Mbps182.32 MbpsImproved
Bouygues Telecom ISP15 Sep 2020 20:08:3886 mins82.89 Mbps96.33 MbpsImproved
Bouygues Telecom ISP15 Sep 2020 18:23:41622 mins34.47 Mbps27.83 MbpsNeeds help
Free15 Sep 2020 15:32:05218 mins8.35 Mbps7.98 MbpsNeeds help, very slow
Bouygues Telecom ISP15 Sep 2020 13:41:54529 mins27.42 Mbps17.82 MbpsNeeds help
Bouygues Telecom ISP12 Sep 2020 13:59:4927 mins2.98 Mbps21.36 MbpsImproved
Bouygues Telecom ISP11 Sep 2020 08:06:01225 mins29.61 Mbps0.36 MbpsNeeds help, very slow
Orange France08 Sep 2020 20:37:48210 mins5.99 Mbps5.46 MbpsNeeds help, very slow

Summary of Internet Service Providers in Guyancourt

#Provider NameMax SpeedTypical Speed Range
1Numericable938.05 Mbps36.29—189.06 Mbps
2SFR Group731.19 Mbps17.05—102.68 Mbps
3Bouygues Telecom ISP789.9 Mbps10.37—69.19 Mbps
4Orange France356.67 Mbps4.87—17.4 Mbps
5ALSATIS56.46 Mbps1.96—13.75 Mbps
6IPeva8.98 Mbps0—6.38 Mbps
7Free28.2 Mbps3.63—10.02 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 36.29—189.06 Mbps.
The best provider in Guyancourt in Numericable, and their users typically see speeds in the range of 36.29 to 189.06 Mbps.
Users in Guyancourt see an average internet speed of 20.18 up to 1085 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 789.9 Mbps.
Free is available in Guyancourt, and the fastest speed we've seen from them is 28.2 Mbps.
The provider with the most users in Guyancourt is Numericable.

Last updated: 20 Oct 2020