CenturyLink (now operating its fiber business under the Quantum Fiber brand, though still known as CenturyLink in many markets) serves a broad swath of suburban and rural America. Their service footprint spans parts of the Mountain West, Pacific Northwest, Midwest, and Southeast. Depending on where you live, CenturyLink may offer legacy ADSL2+ or VDSL2 DSL service, or the newer Quantum Fiber FTTH service at symmetric speeds up to 940 Mbps.
The router experience differs dramatically between these two service types, so the first thing to establish is which type of CenturyLink service you have. If your speeds are below 100 Mbps and asymmetric, you likely have DSL. If you have symmetric speeds and no modem device (only an ONT box installed by a technician), you have Quantum Fiber. The router advice for each is different enough that it is worth addressing both.
Top Picks at a Glance
| Pick | Best for | Why it stands out | Watch out for |
|---|---|---|---|
| ASUS RT-AX86U Pro | Best overall for Quantum Fiber | 2.5G WAN, excellent Wi-Fi 6, strong firmware for power users, AiMesh support | PPPoE supported but setup is more involved for DSL users |
| TP-Link Archer AX6000 | Best speed-focused pick for Quantum Fiber | Dual-band Wi-Fi 6 with high throughput, 8 Gigabit LAN ports, solid QoS | 1G WAN port; fine for 940 Mbps Quantum Fiber plan |
| Netgear RAX50 | Best budget router for CenturyLink | Affordable Wi-Fi 6 with reliable performance; handles all DSL and Quantum Fiber plans | 1G WAN; limited advanced features compared to ASUS |
| GL.iNet Flint 2 | Best for CenturyLink DSL PPPoE users | OpenWrt firmware with excellent PPPoE support, WireGuard VPN, 2.5G WAN, great value | More technical setup; not ideal for non-technical users |
| eero 6+ | Easiest setup for CenturyLink | Simple app-based setup, decent mesh performance, PPPoE supported in settings | Limited advanced controls; some features behind eero+ subscription |
Our Picks in Detail
- 2.5G WAN, excellent Wi-Fi 6, strong firmware for power users, AiMesh support
- PPPoE supported but setup is more involved for DSL users
- Dual-band Wi-Fi 6 with high throughput, 8 Gigabit LAN ports, solid QoS
- 1G WAN port; fine for 940 Mbps Quantum Fiber plan
- Affordable Wi-Fi 6 with reliable performance; handles all DSL and Quantum Fiber plans
- 1G WAN; limited advanced features compared to ASUS
- OpenWrt firmware with excellent PPPoE support, WireGuard VPN, 2.5G WAN, great value
- More technical setup; not ideal for non-technical users
- Simple app-based setup, decent mesh performance, PPPoE supported in settings
- Limited advanced controls; some features behind eero+ subscription
CenturyLink DSL: PPPoE Is the Key Requirement
CenturyLink DSL uses PPPoE (Point-to-Point Protocol over Ethernet) for authenticating your connection to their network. When setting up your own router on CenturyLink DSL, you will need to enter your CenturyLink username (typically your email address or account number) and password into the router's WAN settings under the PPPoE connection type. Every router on this list supports PPPoE — it is a standard WAN protocol that virtually all modern routers implement. The GL.iNet Flint 2 is particularly well-regarded for PPPoE DSL setups because its OpenWrt-based firmware handles PPPoE configuration clearly and stably, even on slower DSL connections.
On CenturyLink DSL, your modem and router can be either a combined unit or separate devices. If CenturyLink provided a modem-router combo (like the Zyxel C3000Z or ActionTec C1000A), you can put that device in bridge mode to pass the PPPoE connection through to your own router — but it is often simpler to use a compatible DSL modem in standalone mode and connect your router directly. Check CenturyLink's approved modem list for your specific DSL line type (ADSL2+ or VDSL2).
Quantum Fiber: Clean Fiber Setup with IP Passthrough
Quantum Fiber installs an ONT at your home connected to a Quantum Fiber gateway router. The setup is similar to AT&T Fiber: the gateway handles authentication, but you can configure IP passthrough to forward the public IP to your own router. Some newer Quantum Fiber installs use DHCP without PPPoE, making the setup even simpler — your router just receives an IP address via DHCP through the Quantum Fiber gateway in passthrough mode.
Quantum Fiber's top residential plan is 940 Mbps symmetric. A router with a standard 1G WAN port handles this without issue — the Archer AX6000 and Netgear RAX50 are both good fits at this speed tier. The ASUS RT-AX86U Pro's 2.5G WAN port gives extra headroom if Quantum Fiber expands to higher plan tiers in your market. Quantum Fiber plans have no data caps, which is a meaningful advantage if you run cloud backups, have multiple streamers, or work from home with large file transfers.
GL.iNet Flint 2: The DSL Power User's Router
The GL.iNet Flint 2 deserves special mention for CenturyLink DSL users who want more control than most consumer routers offer. Built on OpenWrt, the Flint 2 exposes full PPPoE configuration, detailed firewall rules, WireGuard and OpenVPN server and client, DNS-over-HTTPS, and ad-blocking via AdGuard Home — all at a sub-$100 price point. The 2.5G WAN port is wasted on a DSL connection but useful if you ever upgrade to Quantum Fiber without wanting to replace your router. For DSL users on tight budgets who also value privacy and VPN features, the Flint 2 is a standout option.
The trade-off is that GL.iNet's interface, while much more polished than raw OpenWrt, is still more technical than the consumer-friendly apps offered by eero or TP-Link's Deco line. If you are comfortable with router configuration and want maximum capability per dollar, the Flint 2 delivers. If you want something you can set up in five minutes with a phone app, look at eero or the TP-Link Deco line instead.
Frequently Asked Questions
Does CenturyLink DSL require PPPoE?
Yes. CenturyLink DSL uses PPPoE for authentication. You need to enter your CenturyLink username and password into your router's WAN PPPoE settings. Your router must support PPPoE — virtually all modern routers do, including every router on this list. If using a modem-router combo from CenturyLink in bridge mode, your own router handles the PPPoE session directly.
Can I use my own modem with CenturyLink?
For CenturyLink DSL, you need a DSL modem that supports VDSL2 or ADSL2+ depending on your line type, and PPPoE. CenturyLink maintains an approved modem list on their support site. For Quantum Fiber, no DSL modem is needed — an ONT is installed by a technician, and you connect your router via IP passthrough behind the provided gateway.
What is the difference between CenturyLink DSL and Quantum Fiber?
CenturyLink DSL runs over copper telephone lines, delivering asymmetric speeds typically ranging from 10 to 100 Mbps with PPPoE authentication. Quantum Fiber is CenturyLink's fiber-to-the-home service, delivering symmetric speeds up to 940 Mbps with no data caps. They use completely different infrastructure, equipment, and setup procedures. If Quantum Fiber is available at your address, the upgrade from DSL is substantial and well worth pursuing.
Does Quantum Fiber have data caps?
No. Quantum Fiber plans do not have monthly data caps, which is one of their strongest advantages over cable competitors like Cox and Xfinity. CenturyLink legacy DSL plans also generally do not enforce strict data caps, though fair-use policies may apply in highly congested areas. No data caps means you can stream, back up, and download without tracking monthly usage.