AT&T internet Speedtest and troubleshooting

AT&T internet connection Speed Checker

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

Click on the “Go” button on the Ookla Speed test widget below to confirm the speed of your AT&T broadband connection. Information 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 this AT&T speed test work?

The AT&T speed test starts by identifying your AT&T connection and then selecting the speedtest server closest to your area.

When you click the GO button it’ll send packets of data 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 between your device and the selected test server.

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

How reliable is the AT&T internet speedtest?

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 speed test server closest to you, this will eliminate latency & bottlenecks that can skew performance metrics.

Ookla has a global network of over ten thousand speedtest servers in over 190 countries.

AT&T ookla speed test servers

Source: How ookla ensures accurate reliable speedtests

To increase accuracy, we would recommend that you run the AT&T speed checker from a device connected directly to the AT&T gateway modem or router.

This will help give an accurate reflection on the performance of your AT&T internet connection and assist to rule out the wireless network.

If you cannot connect your device directly to the AT&T modem or router, make sure that the device you are running this test is as physically close the modem or router as possible. Also run the speedtest at least twice and from 2 different 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 connectivity terms means the time (or delay) it takes for data to travel from one device to another. In this case, 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 receive a response.

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

The AT&T speedtest will automatically select a speedtest server closest to your location to eliminate latency and bottlenecks that can skew performance metrics.

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

What is a good ping rate?

A normal 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 the figure can be over 200ms.

The speedtest above  will show you the location of the test server so that you can determine whether your ping result is good or not.

What is Jitter?

All data (e.g. an email, image, video, voice call, etc) is transmitted across the internet as a series of packets. The packets usually move at a regular rate and are rebuilt 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 water coming out. When the flow rate becomes abnormal (because of the increasing and decreasing), the Jitter value goes up – which is not good.

You do not usually notice jitter because networking devices can smooth it out however, you will notice  jitter during internet video and voice calls because the connection will momentarily disconnect or break up.

AT&T Download and Upload speed metrics explained

YouTube video

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

Possible causes of AT&T slow broadband internet performance

AT&T Internet Speedchecker - Slow Internet speedThe are a number of possible reasons why the AT&T internet connection is not performing. While we cannot tackle each and every possible reason, we have listed a number of likely causes.

Based on your AT&T broadband internet setup, some of the suggestions may not be relevant in your case. We hope that they may trigger food for thought or get you heading in the right direction to resolve the fault.

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

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

If you’re on a laptop, you can use the task manager to check the CPU and RAM usage.

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

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

This should hopefully provide you with some information to work with in terms of if the issue lies with your device or the AT&T broadband internet connection.

Is the wireless connection the problem?

The cause of the fault may be your wireless network connection and not the AT&T broadband internet connection.

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

If speed improves when you’re connected via a cable then this suggests that the issue may be with the Wi-Fi network.

Possible things to investigate are:

  • Are the Wireless channels you are using for your Wifi network network (SSID) overlapping with the neighbors?
  • Is your Wireless frequency congested. Maybe you should consider switching to 5Ghz?
  • Is your wireless signal from the modem or router obstructed?
  • Does the performance get better when you are standing directly infront of your AT&T wireless modem/router?

Number 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 web, streaming video, streaming music, downloading or uploading files, video conferencing, etc, they will have an impact on the performance of your AT&T internet connection because the bandwidth is being shared.

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

Who is connected to my Wifi network?

Have you checked that your wireless network password has not been compromised? Do you have an unsecured Guest Wi-Fi network?

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

There are two applications that you may use to scan your Wi-Fi network to check who’s connected:

Both applications will scan your wireless network and display a list of the devices connected.

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

Check out this tutorial on how to use these applications

Wi-Fi signal strength

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

Situations that can affect the wireless signal are;

  • Walls, doors or floors between the device and the AT&T internet modem or router
  • Household appliances such as baby monitors and microwaves
  • Overlapping Wi-Fi network signal from your neighbours
  • Long distance between your device and your AT&T broadband internet modem or router.

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

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

The wireless booster simply picks up your existing wireless network 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 reach.

Place the Wifi network booster/extender where the wireless signal from the AT&T internet router or model is beginning to become weak. Roughly where the Wifi network signal drops down to two bars. You could use your phone to determine where this is.

End device health

Viruses and malware may slow down your device and your performance on your device. Viruses and malware may be working silently and hidden in the background download and uploading data and thus slowing the performance of the whole internal network down.

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

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

In the same way as other Internet Service Providers, AT&T’s broadband infrastructure is continually upgraded to support new features and changes in technology. Similarly, the broadband internet routers or modem at your property will also periodically 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 upgrade 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 PCs, 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 problems or newer devices?

Is the fault external to your home?

This is probably the most common reason for AT&T internet issues. The are miles of cables involved to deliver the AT&T internet connection to your property.

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

You should contact AT&T who will be able to conduct the relevant connection checks to check if there’s a fault on the AT&T broadband internet connection.