AT&T internet Speedtest and troubleshooting

AT&T internet connection Speed Checker

This AT&T internet connection speedtest will help you find out your AT&T internet connection speed.

Click on the “Go” button on the Ookla Speed Checker widget below to confirm the speed of your AT&T broadband connection. Details on how to troubleshoot issues with your AT&T broadband can be found below.

AT&T Speed test widget provided by Ookla, LLC. Ookla’s Privacy Policy


How does the AT&T speed test work?

The AT&T speed checker begins by identifying your AT&T connection and then selects the speed test server closest to your location.

When you click on the GO button it’ll send packets of information from the speedtest server to your device.

The AT&T speed test checker is by powered by Ookla and measures the ping (latency), download speed and upload speed from your device and the selected test server.

The time that it takes this packet to go to and return from the server establishes your AT&T broadband speed.

How accurate is the AT&T internet connection speed test?

The AT&T Speedtest is powered by Ookla which one the most popular broadband connection speedtest and provides accurate and consistent testing experience and results.

By automatically choosing a speedtest server closest to you, this eliminates latency and bottlenecks which can skew performance metrics.

Ookla has a global network of over 10,000 speedtest servers in more than 190 countries.

AT&T ookla speed test servers

Source: How ookla ensures accurate reliable speedtests

To improve accuracy, it is recommended to run the AT&T speed tester from a device connected directly to the AT&T gateway modem or router.

This will help provide an true reflection on the performance of your AT&T internet connection and help rule out the Wi-Fi network.

If you are unable to connect your device directly to your AT&T modem or router, make sure that the device you are running this test is as close the modem or router as possible. Also run the speedtest at least twice and from 2 separate devices to make sure that the issue is not on the device.

What do the results from my AT&T speed test mean?

Whats is Ping?

Ping is sometimes referred to as latency which in internet connectivity terms means the time (or delay) it takes for data to travel from one device to another. In this instance, from your device using the AT&T internet connection to the nearby server.

Ping sends data to another computer (in this case, the speedtest server) and measures in milliseconds (ms) how long it takes to get a response.

If the other computer is very far away or the network is busy it will take longer to receive a response and the ping value will be high.

This AT&T speedtest will automatically select a speed test server nearest to your location which will eliminate latency and bottlenecks which can distort performance metrics.

A fast ping (low ms value) means a more responsive AT&T internet connection.

What is a good ping rate?

An average ping rate to a device across the same city should be lower than 20ms. A good ping rate between cities you’d expect to see ping values between the values of 30-60ms, and between continents that figure can climb to over 200ms.

The speed test above  will show you the location of the test server so that you can determine whether your ping result is good.

What is Jitter?

All data (e.g. an email, image, video, voice call, etc) is sent across the internet as a series of packets. The packets usually move at a constant rate and are put back together at the destination device.

Jitter is the rate of delay during the transmission of the packets.

Try to think of it like running a tap and then increasing or decreasing the flow rate of the running water coming out. When the flow rate becomes irregular (because of the increasing and decreasing), the Jitter value increases – which is not good.

You do not generally notice jitter as networking devices can smooth it out however, you will notice  jitter whilst on internet video and voice calls because the internet connection will momentarily lag or break up.

AT&T Download and Upload speed metrics explained

Read More:What does the Download and Upload speed results on my AT&T speed test actually mean?

Possible causes of AT&T slow broadband internet speed

AT&T Internet Speedchecker - Slow Internet speedThe are a number of possible reasons why your AT&T internet connection is not performing. While we cannot address each and every possible cause, we have listed a number of common possibilities.

Depending on your AT&T internet setup, some of the suggestions may not be relevant in your scenario. We hope that they may trigger food for thought or get you on the right path to resolve your issue.

Is it the AT&T broadband internet that is slow or could it be your device (PC/laptop/phone)?

You may need to check how many applications are concurrently running on your device that may be using your system resources (mainly RAM memory and CPU) and your AT&T broadband internet bandwidth.

If you’re on a PC, you may use the task manager to check your CPU and RAM usage.

On other devices you could try rebooting the device which should hopefully shut down all programs that may have been running in the background.

Re-run the AT&T speed checker on the personal computer and your phone to see how the speedtest results compare between the two devices.

This should hopefully give you some info to work with in terms of whether the problem lies with your device or the AT&T broadband internet connection.

Is the Wi-Fi network connection the problem?

The cause of the fault may be the Wi-Fi network connection and not the AT&T internet connection.

You could rule out the Wi-Fi network network being the cause of the issue by connecting your computer directly into the AT&T internet modem or router using a cable and run the AT&T speed checker again.

If performance is better when you are connected via a cable then this proves that the issue could be with your Wifi.

Possible things to check are:

  • Are the WiFi channels you are using for your wireless network network (SSID) overlapping with your neighbors?
  • Is your WiFi frequency congested. Maybe you should consider switching to 5Ghz?
  • Could your Wifi network signal from the modem or router obstructed?
  • Does the performance improve when you are stood directly in-front of your AT&T wireless network modem/router?

The amount of devices connected to your internal network

All devices that are connected to your internal network is sharing the same AT&T internet connection.

If you have multiple devices browsing the internet, streaming videos, streaming music, downloading or uploading files, video conferencing, etc, this will have an impact on the performance on your AT&T broadband internet connection because the bandwidth is being shared.

Are you aware of how many devices are connected to the AT&T internet connection? Do not forget about all the smart home devices, security cameras, doorbell cameras, alexa/google hub or other similar devices that are continually connected.

Who is connected to my wireless network?

Have you checked that your Wifi network password has not been compromised? Do you have an unsecured Guest Wifi network?

Neighbors may be on your Wi-Fii network and using up all the AT&T internet bandwidth downloading, uploading, streaming or running peer-to-peer file sharing over your AT&T internet connection. Worse still, they could be carrying out illegal activities.

There are two apps that you may use to scan your Wifi network to check who is connected:

Both apps will scan your Wi-Fi network and display a list of the devices connected.

Alternatively, you can log into the AT&T wireless router to see who is logged in.

Check out this guide on how to use these applications

Wireless signal strength

If the device is not picking up a strong signal it will have an affect on the throughput, speed and internet performance regardless of how fast the AT&T internet connection is.

Conditions that may affect the wireless signal are;

  • Walls, doors or floors between the device and the AT&T broadband internet modem or router
  • Electrical appliances like baby monitors and microwaves
  • Overlapping wireless signal from your neighbors
  • Long distance between your device and the AT&T broadband internet modem or router.

Do I need a Wifi signal booster for my AT&T broadband internet?

If you discover that you have wireless black spot in your home, a Wi-Fi signal extender aka a Wi-Fi booster is the fix to increase the signal strength across the house.

The Wi-Fi network booster simply picks up the existing Wifi signal just as it is starting to become weak and then re-transmits the wireless network signal at a more stronger rate to boost its coverage.

Locate the Wi-Fi network booster/extender where your Wi-Fi network signal from the AT&T internet router or model is starting to become weak. Roughly where your Wifi signal drops below 2 bars. You can use your phone to determine where this is.

Device health

Viruses and malware can slow your device and consequently the performance of your device. Viruses or malware may be working silently and concealed in the behind the scenes download and uploading information and thus slowing the performance of your whole internal network down.

When was the last time you ran a full Virus and Malware check on your device?

Run a virus/malware checker on your devices to rule this out.

When was the last time your AT&T broadband internet modem or router was restarted?

Just like other Internet Service Providers, AT&T’s broadband infrastructure is continually being updated to support new features and changes in technology. Equally, the internet routers or modem at your property will also occasionally require to be updated to support changes in the AT&T internet infrastructure.

The update could be in the form of a software update or an upgrade of the physical AT&T modem/router hardware to a the newest version.

You may be able to perform the software update by logging in to the AT&T modem/router. If you cannot do this or are not confident doing it, contact AT&T and they will be able to either {do it for you or guide you through it.

The type and age of device

Newer computers, phones and other internet enabled devices are generally faster than old devices due to developments in networking technology and protocols.

Do you experience the same issues or newer devices?

Is the issue external to your house?

This is probably the most likely reason for AT&T internet connectivity problems. The are miles of cabling involved to deliver the AT&T broadband internet connection to your property.

The problem could be with the physical connection that comes into your home and goes into the modem or router in your home.

You should contact AT&T who should be able to conduct the relevant connection tests to see if there is a fault on the AT&T internet connection.

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