Coverage from FCC Broadband Data Collection filings (Dec 2024 vintage), residential service — see the FCC’s map at broadbandmap.fcc.gov. Availability is address-specific within a ZIP.
Plans from $45/mo (checked July 2026)
Quantum Fiber entry tier; CenturyLink DSL Simply Unlimited $50/mo. No contracts; taxes extra.
About CenturyLink / Quantum Fiber
The two brands behave very differently: Quantum Fiber is a modern symmetrical fiber product with no contracts, unlimited data, and included equipment, while CenturyLink DSL is a budget copper service best treated as a fallback where nothing faster exists. With the AT&T acquisition, expect Quantum Fiber markets to fold into AT&T Fiber’s plans over time.
CenturyLink / Quantum Fiber plans & pricing
| Plan | Speed | Price | Notes |
|---|---|---|---|
| CenturyLink Simply Unlimited (DSL) | up to 100 Mbps | $50/mo | no contract, price for life positioning |
| Quantum Fiber | 500 Mbps – 8 Gbps | from $45/mo | symmetrical, no contract, equipment included |
Pricing as of July 2026; promotional rates, taxes/equipment may be extra, and offers vary by address. Confirm with CenturyLink / Quantum Fiber or call our team.
Strengths
- Quantum Fiber: symmetrical speeds, flat pricing, no contract
- DSL reaches rural addresses others skip
- Unlimited data on fiber plans
Watch for
- DSL speeds are modest (often ≤100 Mbps)
- Two-brand lineup is confusing
- Fiber footprint transitioning to AT&T ownership
Is CenturyLink / Quantum Fiber available at your address? Check your ZIP:
Call (855) 643-8023CenturyLink / Quantum Fiber — frequently asked questions
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Independence disclosure: EZ Internet is an independent comparison website — not the official CenturyLink / Quantum Fiber site, and not affiliated with or endorsed by CenturyLink / Quantum Fiber. Trademarks belong to their owners and identify the services compared. We may be compensated when you order service through our team.