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Centurylink Router Blinking Red & Green

by stacy

A CenturyLink router’s lights blinking red or green can be very frustrating. It can be frustrating to see your CenturyLink router’s lights blinking red and green. This will help you diagnose your home network. This is why we will be looking at the causes of the CenturyLink router flashing red and then what to do about it.

CenturyLink users are likely to be using either the C4000 or tower modem. So, let’s see what it is trying to tell us by blinking red and green.

Why does the Centurylink Router blink red and green?

Tower modem

If the Internet light on your Tower modem has been blinking red and green, it means that the tower is automatically detecting the internet configuration.


DSL connections can cause the DSL light on the router’s back to blink red or green. This is an indication that the connection has been established and that the modem has synchronized with the network. The DSL light will turn green once it is synchronized. However, if it remains red it is a sign that the ISP network hasn’t been detected.

As you can see, there are many different messages from CenturyLink routers. Fortunately, there is something we can do to fix them.

Just wait!

The first thing you can do if the Tower modem’s red and green lights are blinking in unison is to wait. Perhaps the red and green lights stopped blinking even though you are reading this article.

The automatic internet configuration detection shouldn’t last for more than 60 seconds so just wait a little.

Network not activated

You might have just become their customer, or your plan has changed. In that case there are high chances that your network hasn’t been activated yet. If this is the case, you have two options: either call support to resolve the issue or wait until tomorrow for a resolution. After your network has been activated, you will see the red and green light stop blinking.

Make sure to check your connections

Verify that the green cable is properly connected to both the DSL port and the wall jack. If it isn’t connected or the connection is loose, disconnect it and connect it again to make sure everything is firmly connected.

Is the jack flawed?

Sometimes, a faulty connector can cause CenturyLink routers to flash red and green. Please use another jack to connect your modem and check if the problem persists.

Reboot your router

You have probably noticed that rebooting your device often fixes any buggy devices. The same applies to your router.

Many users have reported that the problem with the blinking lights (red and green) was resolved by rebooting their router. These steps are simple and easy to follow.

  • Disconnect the router form the power source.
  • You should wait at least 60 seconds.
  • The CenturyLink router can be plugged back in.
  • Wait for the router’s to start up.

It is time to stop the green and red lights blinking.

CenturyLink Support

Even though you have tried everything, the router’s red and green lights are still flashing. CenturyLink Support is the best option in this situation. This team can diagnose and repair the problem quickly, so it is possible to get your Internet connection back up and running in no matter what.

Final words

We hope you found this article helpful in resolving the CenturyLink Router Red and Green issues. As you can see from the solutions given above, you don’t need any previous experience in order to fix it on your own. The same principle applies to any other network issues that you might have. You should first try to solve the issue yourself before calling customer service.

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