Provider Profile

CenturyLink / Quantum Fiber Internet — Plans, Prices & Availability

CenturyLink covers 3,662 ZIP codes across 21 states in FCC data, split between legacy DSL (sold as Simply Unlimited, $50/mo) and Quantum Fiber (from $45/mo, up to 8 Gbps symmetrical). In February 2026, AT&T completed its acquisition of the Quantum Fiber consumer business from Lumen.

3,662ZIP codes covered

21States

8 GbpsTop advertised speed

Fiber, DSLTechnologies

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
Quantum Fiber entry tier; CenturyLink DSL Simply Unlimited $50/mo. No contracts; taxes extra.

Check CenturyLink / Quantum Fiber directly for the price at your address — we do not sell CenturyLink / Quantum Fiber. Call us to compare the providers we can order: (833) 390-3014.

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

Indicative pricing: promotional rates, taxes and equipment may be extra, and offers vary by address. Confirm with CenturyLink / Quantum Fiber directly.

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 (833) 390-3014

CenturyLink / Quantum Fiber — frequently asked questions

Is CenturyLink or Quantum Fiber available in my area?

FCC filings show the combined footprint at 3,662 ZIP codes across 21 states — fiber in metro areas (Denver, Phoenix, Seattle, Minneapolis and others), DSL in surrounding regions. Enter your ZIP to see which product serves your address.

How much does CenturyLink internet cost?

CenturyLink’s DSL plan (Simply Unlimited) is $50/mo with no contract. Quantum Fiber starts around $45/mo for entry fiber tiers, with multi-gig plans higher.

What happens now that AT&T bought Quantum Fiber?

AT&T closed the $5.75B acquisition of Lumen’s consumer fiber business in February 2026. Existing Quantum Fiber service continues, and those markets are expected to migrate to AT&T Fiber plans and branding over the next couple of years.

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Independence disclosure: EZ Internet is an independent comparison site — not the official CenturyLink / Quantum Fiber site, and not affiliated with or endorsed by CenturyLink / Quantum Fiber. We do not sell CenturyLink / Quantum Fiber service; order it from CenturyLink / Quantum Fiber directly. Coverage comes from FCC Broadband Data Collection filings and pricing from the provider’s published offers — confirm both with the provider. Trademarks belong to their owners and identify the service compared.