CenturyLink / Quantum Fiber internet in Flagstaff, AZ
CenturyLink / Quantum Fiber reports service to about 92% of residential locations in Flagstaff, Arizona, which ranks it #1 of 7 providers with meaningful coverage and makes it the provider reaching the most locations. CenturyLink and Quantum Fiber are Lumen's consumer internet brands. They offer DSL in many areas and fiber (branded Quantum Fiber) where it has been built out.
How CenturyLink / Quantum Fiber compares in Flagstaff
| # | Provider | Technology (varies by address) | Locations covered |
|---|---|---|---|
| 1 | CenturyLink / Quantum Fiber | Fiber, DSL | 92% |
| 2 | Optimum | Fiber, Cable | 88% |
| 3 | Verizon | Fiber, Fixed wireless | 70% |
| 4 | AT&T | Fiber, DSL, Fixed wireless | 63% |
| 5 | T-Mobile Home Internet | Fixed wireless | 58% |
| 6 | Bluespan Wireless | Fixed wireless | 6% |
| 7 | Wecom | Fiber | 5% |
Share of residential locations in Flagstaff where each provider reports service (FCC National Broadband Map, data as of December 31, 2025). See all providers in Flagstaff.
CenturyLink / Quantum Fiber vs other providers
What technologies are available in Flagstaff?
Fiber is limited in Flagstaff, reaching about 8% of locations. Plans of 100 Mbps or faster are reported for about 99%+ of locations, while gigabit-class service reaches about 5%. DSL is still reported for about 38% of locations, which can be a fallback where fiber and cable do not reach. Fixed wireless home internet is reported for about 90% of locations.
FCC National Broadband Map, data as of December 31, 2025: share of residential locations in Flagstaff that providers report they can serve. City-level figures, not your address.
CenturyLink / Quantum Fiber in places near Flagstaff
- Sedona, AZ (82%)
- Cottonwood, AZ (81%)
- Verde Village, AZ (93%)
- Camp Verde, AZ (65%)
- Chino Valley, AZ (79%)
- Prescott Valley, AZ (82%)
Plans and pricing
Plan prices and promotions change often and vary by address, so we do not list them. See CenturyLink / Quantum Fiber's current offers at your address with its availability checker.
Frequently asked questions
Is CenturyLink / Quantum Fiber available in Flagstaff?
CenturyLink / Quantum Fiber reports service to about 92% of residential locations in Flagstaff, per FCC data as of December 31, 2025. That ranks it #1 of 7 providers with meaningful coverage here. Availability depends on your exact address.
What type of internet does CenturyLink / Quantum Fiber offer in Flagstaff?
CenturyLink / Quantum Fiber offers fiber, dsl service across its footprint. The FCC summary does not say which technology reaches each address, so check your address with the provider.
Who are the main CenturyLink / Quantum Fiber competitors in Flagstaff?
Other providers reporting at least 10% coverage in Flagstaff include Optimum (88%), Verizon (70%), AT&T (63%), T-Mobile Home Internet (58%).
How do I check CenturyLink / Quantum Fiber availability at my address?
Use CenturyLink / Quantum Fiber's own address checker, or enter your ZIP code here to compare all providers for your area.
Compare all providers for your ZIP code
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