Quantum Fiber You World, Unleashed
QF Awareness
Quantum Fiber You World, Unleashed
QF Awareness
Father and Daughter Using Tablet
Best in overall internet service satisfaction

Introducing Quantum Fiber

For today’s always-online homes and small businesses, internet demand is exploding and outgrowing what traditional CenturyLink services can do. So, we’re looking forward, and building Quantum Fiber—a premium internet service—designed to take you beyond the CenturyLink journey.

While Quantum Fiber and CenturyLink are related, they’re on different paths. Quantum Fiber is part of the vast fiber-optic backbone, and can deliver amazingly fast speeds, a network with 99.9% reliability* and a totally online experience where you control customer service, care, and repair with an app tap. Right now, we’re upgrading CenturyLink areas to Quantum Fiber, city by city. We want to bring you the world’s best internet service—and give you the freedom to live your best digital life.

* Based on network uptime or availability.

CenturyLink is transforming into Quantum Fiber because you’re online more than ever, and super-fast, reliable internet is a must. As soon as Quantum Fiber is available in your area, we’ll help CenturyLink customers make the move to our new, ultra-fast, premium internet service.

We did away with annual contracts, bundles, and pricing gimmicks because you don’t want them. Instead, get unlimited data, a game-changing, fully online customer experience, transparent pricing, and a powerful app that gives you freedom, simplicity, and control over your internet.

Quantum Fiber is an internet service built to help you live your best digital life. Your home or small business can enjoy a premier service experience on our trusted fiber network, with super-fast internet speeds and a reliable connection.

You can expect:

  • A fully online Fiber Customer Success Team, available to help through live chat, 24/7. They’ll help you get what you need when you need it.
  • Unlimited data with no annual contract.
  • Prepaid service with no credit checks and no bills to remember.
  • Various payment options including credit or debit card, PayPal, and Apple Pay.
  • A convenient online account portal where you can access your statements and account information, manage your service plan, or reschedule appointments.
  • Powerful, easy-to-use apps to manage your account, set up parental controls, and customize your home network anytime—with just a few taps.

Equipment and installation

There are a couple of ways to get started with Quantum Fiber.

  1. If you received an email, click the link and choose the speed, equipment, and installation date that works best for you. Don’t have a link? Contact our Fiber Customer Success Team at 1-833-250-6306. They'll give you a unique link so you can transfer your account. They’ll also answer any questions that pop up during the switch to Quantum Fiber. 
  2. If you received a letter with the option to upgrade to Quantum Fiber, please contact 877-997-9390 Monday through Saturday, 8:00 am to 5:00 pm PST.

Or, simply check availability at Q.com and enter your address. Be sure to let us know you’re an existing CenturyLink customer when you place your Quantum Fiber order.

As your service transfers to Quantum Fiber, you may see a little downtime based on the two scenarios below.

If you have a SmartNID installed (see picture below), that means fiber service is already connected to your home or business, and you don’t need a technician installation or any new equipment. You will experience a brief service interruption overnight as we transfer your account from CenturyLink to Quantum Fiber. There is no charge for the activation and transfer of your service.

C5500XK modem

If your home or business is not fiber-enabled, a technician will need to install a new fiber-ready SmartNID device. There is no charge for this fiber equipment or installation. You choose the installation date and time that works best when you place your order for Quantum Fiber service.

Note: After your new equipment is installed, don't forget to return your previous modem to CenturyLink.


After we install Quantum Fiber, you’ll receive a final bill from CenturyLink.

If you are a prepaid CenturyLink customer, you pay in advance for your service each month. Quantum Fiber is also a prepaid service. When you switch, your subscription will begin on the date of your installation, and your payment will then be processed on that same date each month going forward. 

If you are a postpaid CenturyLink customer, you pay for your service at the end of each billing cycle. Since Quantum Fiber is a prepaid service, your billing date will change. When you switch, your subscription will begin on the date of installation, and your payment will then be processed on that same date each month going forward.

If you have leased CenturyLink equipment, don’t forget to return your previous modem to CenturyLink within 30 days to avoid unreturned equipment charges.

If you have questions about your specific billing situation, reach out to our Fiber Customer Success Team, available by chat, 24/7.

Yes. Your payment information does not transfer with the switch from CenturyLink to Quantum Fiber. When ordering, you’ll be required to provide payment information. You’ve got options though—use a debit or credit card, PayPal, or Apple Pay for your monthly subscription. Just set it and forget it, and you’ll see an automatic charge each month for the internet speed you choose.

Other features with Quantum Fiber

When you place your Quantum Fiber order, you’ll get 360 WiFi—a new way to WiFi with pods that provide overlapping signals to create a WiFi “blanket”. With AI-powered optimization, your devices will be connected at the best speed possible. Freely move around your home or business and keep streaming, videoconferencing, and surfing without interruption or dead spots.

You’ll need 360 WiFi or another WiFi solution to get a complete WiFi experience in your home or business. The SmartNID does not provide a wireless (WiFi) signal.

Quantum Fiber offers Connected Voice, a digital phone service designed with your connected life in mind. No matter how you message, meet, or talk, you’ll get great calling features, unlimited nationwide long distance, and more.

If you have CenturyLink phone service today and would like to keep your current number, please contact us. Otherwise, if you want to bring a number from another provider, or order phone service with a new number, you can order Connected Voice once your Quantum Fiber internet is installed. Simply sign in to your account and choose Services to get started. 

We hope you choose to experience the benefits of fiber technology with Quantum Fiber. However, if you do not want to transfer your CenturyLink services to Quantum Fiber, call us at 877-997-9390 to learn about your options.