Fiber internet built for how you live, work, and connect
Quantum Fiber® from AT&T delivers lightning-fast, reliable fiber internet with symmetrical speeds on most plans, unlimited data, and an easy, fully online service experience.
As part of the AT&T family, we provide high-performance connectivity across multiple U.S. states, backed by an advanced fiber-optic network. Quantum Fiber Internet® is designed to power the demands of remote work, streaming, gaming, and a house full of smart devices—no matter how connected your home or business is.
- Part of the AT&T family
- Advanced fiber-optic internet
- Symmetrical speeds on most plans
- Unlimited data on all plans
- No annual contract
Learn more about Quantum Fiber:
- Who we are
- What makes us different
- Our technology
- Where we provide fiber internet
- Our mission & vision
- Built for how you live and work
- Reliable internet you can count on
- Customer experience & support
- Backed by AT&T
- Investing in the future of connectivity
- Frequently asked questions
- Get started with fiber internet
Order Online! Who we are
Quantum Fiber is a U.S.-based fiber internet provider, delivering high-speed, reliable connectivity to homes and small businesses. Backed by advanced fiber optic technology, Quantum Fiber helps support how people live, work, and connect today.
Our approach is simple: deliver fast, dependable internet with a seamless digital experience. With symmetrical speeds on most plans and unlimited data, Quantum Fiber means consistent performance without unnecessary restrictions—empowering you with the online freedom to confidently explore, create, and connect how you want.
From streaming and gaming to remote work and smart home devices, our network is engineered to help keep everything running smoothly. To keep things easy, we’ve done away with data limits and long-term annual contracts, so you can focus on what matters most.
You can even manage your service entirely online or through the app, to make ordering, setup, upgrades, and staying connected easy and straightforward.
What makes us different
By combining a 100% fiber optic network1 with fully digital service and a simple, customer-first approach, Quantum Fiber delivers a future-ready internet experience designed for easy, reliable, empowering connectivity.
Speed, capacity, and low-latency
With Quantum Fiber, there’s no such thing as too fast. Plans include internet speeds up to 500 Mbps, up to 1 Gig, and multi‑gig speeds of up to 2 Gig, up to 3 Gig, and up to 8 Gig in select locations. With symmetrical speeds on most plans and low-latency, expect uploads and downloads that can easily support streaming, gaming, video calls, and large file transfers—even with multiple devices connected at once.
Reliability you can count on
Fiber technology can be less susceptible to interference compared to more traditional networks, helping deliver a stable, dependable connection. Quantum Fiber is engineered for 99.9% reliability, based on network uptime or availability, so households and small businesses can stay connected when it matters most.
Transparent, flexible plans
Quantum Fiber offers simple, easy-to-understand plans with unlimited data and no annual contract. Get connected without a credit check and there’s no bundling required—just straightforward internet service designed around flexibility and control.
Advanced whole-home Wi-Fi
Quantum Fiber Wi-Fi is powered by advanced Wi-Fi 7 technology to deliver strong, reliable coverage throughout your space. Designed to support multiple devices simultaneously, you can experience fast, seamless connectivity from room to room.
Simple setup & digital experience
Free professional installation comes standard to help you get started with Quantum Fiber. Manage your service online or with a few taps on our app. From setup to upgrades and support, expect a streamlined, digital‑first experience that makes managing your internet service a snap.
More value with AT&T
As part of the AT&T family, Quantum Fiber customers may be eligible for extra savings when they pair internet with AT&T Wireless. That can add up to one smart value for households that want easy, affordable, everyday connections.
1 Although our fiber service usually means 100% fiber-optic network to your location, in limited circumstances Quantum Fiber may need to deploy alternative technologies coupled with a non-fiber connection from a certain point (usually the curb) to your location in order to provide the advertised download speeds.
Our technology
Quantum Fiber is powered by a 100% fiber optic network1 and advanced Wi-Fi 7 technology, delivering fast, reliable internet that’s a necessity for today’s smart homes and small businesses. From the network outside your home to the Wi-Fi inside, every layer is built for speed, consistency, and coverage.
100% Fiber-optic network*
Our full fiber optic network1 can deliver high-speed internet with seamless, steady performance. Unlike some traditional internet services, fiber transmits data using light, for ultra-fast speeds, low-latency, and rock-solid reliability.
With plans ranging from up to 500 Mbps to multi gig speeds of up to 2 Gig, up to 3 Gig, and up to 8 Gig in select locations, Quantum Fiber is built for households and small businesses that rely on staying online.
Symmetrical speeds on most plans allow for equally fast uploads and downloads, making it excellent for video conferencing, cloud applications, content creation, and connected devices.
Low-latency performance
Fiber internet can move information at lightning speeds using pulses of light through glass fibers. That speed helps keep latency, or the lag time between doing something online and seeing it happen on your screen, to a minimum. That kind of performance is what helps Quantum Fiber keep gaming, video calls, and smart home automation, smooth and responsive.
Advanced whole-home Wi-Fi
Quantum Fiber Wi-Fi is powered by advanced Wi-Fi 7 technology, which means a fast connection and reliable coverage for multiple smart devices simultaneously. From room to room, it helps keep streaming, gaming, work, and everyday connections seamless and steady.
1 Although our fiber service usually means 100% fiber-optic network to your location, in limited circumstances Quantum Fiber may need to deploy alternative technologies coupled with a non-fiber connection from a certain point (usually the curb) to your location in order to provide the advertised download speeds.
Our high-performance network is growing across multiple states in the U.S.—helping more homes, small businesses and entire communities live, work, and connect.
Speeds and availability vary by location, and service may not be available in all areas within each state.
We continue investing in and expanding our fiber optic network, city by city, neighborhood by neighborhood.
See if fast, reliable, Quantum Fiber is available near you. Enter your address to check availability and explore internet plans.
What drives us
Quantum Fiber is committed to innovation, simplicity, and reliability. Our services are designed to take away friction and complexity and deliver a consistent future-ready internet experience from installation through everyday use.
Connecting you to what matters most
Our mission is simple. By combining a 100% fiber optic network1 with an easy, digital-first experience, we want to make everyday connections simple, fast, affordable, and more meaningful, so households and small businesses are free to do more of what matters.
Building the future of connectivity
Quantum Fiber is here to help power a digital world where everyone is free to explore, create, and stay connected on their terms. The more technology evolves, the more we’ll invest in building our advanced fiber network, multi gig speed capabilities, and next-generation Wi-Fi—to stay ahead of the demands of connected homes and businesses.
Built for how you live and work
Quantum Fiber is designed to support how people connect every day—from entertainment and productivity to smart home tech and small business operations. With speed, low-latency, and a reliable connection, Quantum Fiber is built for today and tomorrow.
For homes
Internet for connected homes and smart living
Today’s connected homes need internet power and performance. From streaming movies and shows in high definition to online gaming and video calls, fiber internet comes through with consistent speeds across multiple devices.
Smart home technology depends on a reliable connection to keep things running smoothly. Smart TVs, voice assistants, security systems, cameras, thermostats, and connected appliances—all running at the same time—can benefit from symmetrical speeds on most plans and advanced Wi Fi coverage.
For remote work and everyday productivity
Reliable internet for work and learning
Whether working from home, attending virtual classes, or managing daily tasks, Quantum Fiber helps provide a stable connection that’s ready to handle video conferencing, cloud applications, and file sharing. Low-latency and consistent performance help keep communication and productivity flowing, day after day.
For small businesses
Connectivity that helps drive business
From processing transactions and managing operations to supporting all the ways you interact with customers, fiber internet helps keep business systems moving efficiently.
With plans ranging from everyday speeds to multi gig options of up to 2 Gig, up to 3 Gig, and up to 8 Gig in select locations, plus unlimited data and a dependable connection, small businesses using Quantum Fiber have the flexibility to grow, adapt, and stay connected in a digital-first world.
Reliable internet you can count on
Quantum Fiber is built to help keep households and small businesses connected when it matters most.
99.9% Reliability
Based on network uptime or availability, Quantum Fiber is engineered to deliver a dependable connection when you need it.
Up to 8 Gig multi-gig capability
For households and businesses with a need for speed, plans range from up to 500 Mbps to mind-blowing multi-gig speeds of up to 8 Gig in select locations.
Low-latency fast performance
Fiber internet is designed to move data fast, with minimal delay, making it great for serious gamers, remote workers, and smart home automation.
Symmetrical speeds
Equally fast upload and download speeds (on most plans) help keep streaming, uploading, and cloud-based work smooth and seamless.
100% Fiber-optic network[1]
Compared to more traditional internet technologies, our dedicated fiber network can help minimize interference so you can connect with confidence.
1 Although our fiber service usually means 100% fiber-optic network to your location, in limited circumstances Quantum Fiber may need to deploy alternative technologies coupled with a non-fiber connection from a certain point (usually the curb) to your location in order to provide the advertised download speeds.
Customer experience & support
The Quantum Fiber experience is built around simplicity, convenience, control, and reliable support—from setup to everyday use.
Simple, self-service control
Our fully digital-first experience lets you manage your internet service online or through the Quantum Fiber app. Whether it’s checking your account details, upgrading your plan, or troubleshooting issues, you’ve got quick, intuitive access anytime.
Get connected without the hassle
Getting started with Quantum Fiber is straightforward, with professional installation included. Our setup process is designed to be smooth and efficient, helping you get connected quickly and confidently.
Help when you need it
Ongoing support is ready whenever you need it, whether you want to manage or upgrade your service, resolve an issue, or find answers, the Quantum Fiber Customer Success Team is available online or through convenient digital tools to help you stay connected.
Assistance is also available by phone, seven days a week, from 7:00 a.m. to 11:00 p.m. CT. With Quantum Fiber, you’re in control of getting the support or self-help you need.
An experience designed around you
With no annual contract, no credit check, and no required bundles, your experience is tailor made to be straightforward, flexible, and easy to understand.
Backed by AT&T
Quantum Fiber is part of the AT&T family, bringing together advanced fiber technology with the scale, innovation, and experience of a global telecommunications leader. This relationship helps strengthen network reliability, expand infrastructure, and support long-term investment in connectivity.
As part of a broader telecommunications ecosystem, Quantum Fiber benefits from deep industry expertise and a commitment to building next-generation networks. This foundation supports continued expansion, performance improvements, and the ability to deliver reliable internet service to more communities.
Customers gain the advantage of a provider focused on modern fiber connectivity, backed by the resources and infrastructure of AT&T. This combination helps ensure a consistent, high-quality experience across network performance, service delivery, and future innovation.
Being part of the AT&T family enables additional value opportunities, including potential savings when bundling Quantum Fiber internet with AT&T Wireless. It also reinforces long-term investment in fiber infrastructure and advanced connectivity solutions.
1 Although our fiber service usually means 100% fiber-optic network to your location, in limited circumstances Quantum Fiber may need to deploy alternative technologies coupled with a non-fiber connection from a certain point (usually the curb) to your location in order to provide the advertised download speeds.
Investing in the future of connectivity
Quantum Fiber continues to invest in, expand, and enhance our fiber network to meet the growing demands of connected homes and businesses. Ongoing network expansion lets us provide access to reliable, high-speed internet across more communities. As people demand more bandwidth, we’re driven to invest in fiber infrastructure and technologies that can deliver faster speeds, improved performance, support for next-generation tech, and broader access to high-quality internet service.
Making fiber internet more accessible
By offering options that can make fiber connectivity more affordable for qualifying households, Quantum Fiber is helping close the digital divide. Programs like our Simply Fiber Internet Plan™ help bring reliable internet to more communities, supporting education, remote work, and everyday connections.
For us, it’s about connecting more people to more possibilities and helping more communities thrive—now and in the future.
Frequently Asked Questions
Quantum Fiber is a fiber internet service that delivers high-speed, reliable internet using a 100% fiber optic network[1]. It is designed for homes and small businesses with increasing connectivity needs like streaming, gaming, remote work, and smart home devices.
[1] Although our fiber service usually means 100% fiber-optic network to your location, in limited circumstances Quantum Fiber may need to deploy alternative technologies coupled with a non-fiber connection from a certain point (usually the curb) to your location in order to provide the advertised download speeds.
Quantum Fiber is available in select locations across multiple U.S. states. Availability varies by area. You can check to see if service is available by entering your address online.
Quantum Fiber is now part of the AT&T family, combining our fiber internet technology with the resources and reach of a global telecommunications leader.
Quantum Fiber has internet speed plans of up to 500 Mbps, up to 1 Gig, and multi gig speeds of up to 2 Gig, up to 3 Gig, and up to 8 Gig in select locations.
We bring the power and speed of advanced Wi-Fi 7 technology to households and small businesses—delivering whole-home coverage and support for multiple connected devices.
With Quantum Fiber, you get unlimited data with no annual contract, for the freedom to binge-watch, game, and make video calls all on your terms.
There’s no credit check to get started with Quantum Fiber, so it’s easy to sign up online and set up your service.
Access support through our online support center, chat with a representative, or use the Quantum Fiber app to manage your service and troubleshoot issues. If you’re more comfortable calling, additional help is also available by phone seven days a week from 7:00 a.m. to 11:00 p.m. CT.
Get Started with fiber internet
Whether upgrading your current service or setting up internet in a new home, Quantum Fiber provides the speed, reliability, and flexibility you need today. With symmetrical speeds on most plans, unlimited data, and a simple digital experience, Quantum Fiber makes it easy to stay connected to what matters.