Quantum Fiber Review
Fiber with price-lock guarantee up to 8 Gbps
Quantum Fiber (formerly CenturyLink) offers fiber internet across 36 states with speeds up to 8 Gbps. Known for price-lock guarantees, no data caps, and straightforward pricing.
Quick Answer
Quantum Fiber scores 8/10 in our testing. It's best for high-speed internet and reliable service. Key strength: Price for life guarantee. Main weakness: DSL speeds very slow in many areas.
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Pros & Cons
- Price for life guarantee
- No data caps
- No contracts required
- Fiber expanding to more areas
- Simple pricing structure
- Good customer service ratings
- DSL speeds very slow in many areas
- Fiber availability limited
- Aging infrastructure in some regions
Quantum Fiber Plans & Pricing
- Up to 100 Mbps
- Price for life
- No data caps
- No contract
- 940 Mbps symmetric
- Price for life
- No data caps
- Free router
- 8000 Mbps symmetric
- Price for life
- No data caps
- Premium equipment
Features & Specs
| Feature | Value |
|---|---|
| max download | 8000 Mbps |
| max upload | 8000 Mbps |
| data cap | Unlimited |
| contract required | |
| wifi hotspots | |
| bundle options | |
| self install | |
| mobile app |
Quantum Fiber Coverage
Quantum Fiber is available in 36 states:
Check if Quantum Fiber is available at your address:
How Quantum Fiber Compares
Max Download Speed
Max Upload Speed
Ready to Get Quantum Fiber?
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Check Availability & PricingFrequently Asked Questions About Quantum Fiber
How much does Quantum Fiber cost?
Quantum Fiber starts at $45.00/mo for the Simply Unlimited plan. They also offer Fiber 500 ($50/mo), Fiber Gig ($70/mo), Fiber 8 Gig ($200/mo).
Is Quantum Fiber worth it in 2025?
Quantum Fiber scores 8/10 in our testing. Price for life guarantee. However, dsl speeds very slow in many areas.
What are the pros and cons of Quantum Fiber?
Pros: Price for life guarantee; No data caps; No contracts required. Cons: DSL speeds very slow in many areas; Fiber availability limited; Aging infrastructure in some regions.
Is Quantum Fiber safe to use?
Quantum Fiber is a legitimate internet providers service. We recommend reviewing their privacy policy for full details.
Is Quantum Fiber available in my area?
Quantum Fiber availability varies by location. Enter your zip code above to check if Quantum Fiber services your address.
What speeds does Quantum Fiber offer?
Quantum Fiber offers speeds varying by plan and location. Actual speeds depend on your location and infrastructure.
Does Quantum Fiber have data caps?
Data cap policies vary by Quantum Fiber plan and region. Check specific plan details or contact customer service for data limit information.