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On fiber there is one spec that can silently cost you half your plan: the WAN port. A Gigabit WAN port physically cannot pass more than about 940 Mbps, so on a 2 Gbps plan it caps you below half of what you pay for, no matter how good the radios are. Match the port to the tier first. Our overall pick is the ASUS RT-BE86U.
Match the router to your tier
Fiber plan
WAN port needed
Also worth having
300-500 Mbps
Gigabit is genuinely fine
Nothing special
1 Gbps
Gigabit works; 2.5 Gbps adds headroom
2.5 Gbps LAN for a wired desktop
2 Gbps
2.5 Gbps minimum
Multi-gig LAN, or you cannot use it wired
5 Gbps+
10 Gbps
10 Gbps LAN and a wired client that can keep up
Buy for the tier you are on, not the tier you might buy later — the upgrade is one router, not a rewire.
Scroll the table sideways to see every column.
Note the third column. A multi-gig WAN port with only Gigabit LAN ports gets that speed into the router and no further on a cable — you would only see it over Wi-Fi, standing near the router.
You do not need a modem
On fiber the provider's ONT converts the optical signal to Ethernet and does the modem job. It is provider-owned and not something you buy or replace, which means "fiber modem router combo" is not a real category — see router versus modem if that is the question that brought you here.
The provider differences that decide your install
Verizon Fios — the simplest. Plug your router straight into the ONT's Ethernet port; no passthrough, no authentication step. Fios specifics.
AT&T Fiber — the BGW320 gateway authenticates the line and cannot be removed, but IP passthrough hands everything to your router so it becomes the real one. Turn the gateway's Wi-Fi off afterward or you will have two networks fighting. AT&T specifics.
Everyone else — find out whether the supplied box has a bridge mode. Without one you are in double NAT, which breaks port forwarding and some games and VPNs.
Try this first
Do not leave the router beside the ONT
The ONT sits wherever the fiber entered the building, which is often a garage, a basement or a utility closet — a poor place for a radio. One Ethernet run, or a MoCA link over existing coax, puts the router somewhere central. A perfect fiber line into a badly placed router is still a bad network, and this move costs under $100.
Do not overbuy
Most fiber customers are on a gigabit tier or below, where a Wi-Fi 7 router with 2.5 Gbps ports is comfortably enough and 10-gig ports are headroom you cannot reach. If coverage is also a complaint, spend the difference on a second node instead — a mesh system for fiber will serve a large house better than a more expensive single router.
How we picked
We do not run a test lab. These rankings come from manufacturers' published specifications, measurements taken by outlets that do have labs, and the structural reasoning on this site about what a given house needs. Every product was checked as currently sold before it was listed. Figures are attributed in Sources; claims we cannot support are left out rather than estimated. Our methodology sets out the whole rubric.
Quick picks
Ranked by our published scoring rubric (wan port speed, lan ports, wi-fi, value). Tap any row to jump to the full write-up, or go straight to the retailer from the right-hand column. How we score.
#
Product
Best for
Score
Price
1
Illustrative
ASUS RT-BE86UMulti-gig WAN, deep settings for an AT&T-style passthrough setup, and AiMesh if coverage turns out to be the real problem.
Scroll the table sideways on a narrow screen. Scores are our editorial assessment from published specifications and independent testing by named outlets — not our own lab results. What we do and do not test.
The picks in full
Illustrative
#1 · Most fiber households
ASUS RT-BE86U
ASUS · Premium
ASUS's mainstream Wi-Fi 7 workhorse and the replacement for the long-serving RT-AX86U Pro: adjustable antennas, deep firmware, no subscription.
Key specifications
Standard
Wi-Fi 7
Position
Replaced the RT-AX86U Pro in ASUS's range
Processing
Roughly 30% faster than the model it replaced
Mesh
AiMesh — add nodes later without replacing it
Score 8.8/10
WAN port speed9.0
LAN ports8.5
Wi-Fi9.0
Value8.5
What it gets right
+External adjustable antennas, which is a real advantage across two floors where sealed internal antennas give you no control
+AiMesh means a coverage problem later is an added node rather than a new router
+Security, parental controls and VPN features included rather than subscribed
+ASUS keeps firmware coming for its routers for an unusually long time
What to watch for
−The settings depth that makes it good also makes it the wrong pick for someone who wants an app and nothing else
−Premium pricing for a single box
−Physically large with visible antennas, which matters if it has to live in a living room
#ad We do not publish a price we cannot verify, so the button opens Amazon's own listing. How we are funded.
Illustrative
#3 · Wired-heavy fiber setups
GL.iNet Flint 3 (GL-BE9300)
GL.iNet · Midrange
The VPN router to buy: WireGuard and OpenVPN built in with usable throughput, five 2.5G ports, and support for dozens of VPN providers out of the box.
Key specifications
Standard
Wi-Fi 7, tri-band (includes 6 GHz)
Ports
5x 2.5 Gbps (1 WAN + 4 LAN), 10 Gbps LAN aggregation
VPN
WireGuard, OpenVPN and Tor; 30+ providers supported
VPN throughput
Up to about 680 Mbps on WireGuard and OpenVPN-DCO
Extras
AdGuard Home preinstalled
Score 9.0/10
WAN port speed8.5
LAN ports10.0
Wi-Fi8.0
Value9.5
What it gets right
+Around 680 Mbps through the tunnel is the number that matters — most routers with a VPN client collapse to double digits and make the feature unusable
+Five 2.5 Gbps ports at this price is unusual, and it means the wired side is not the bottleneck
+AdGuard Home preinstalled handles network-wide ad and tracker blocking without another box
+Supports 30-plus commercial VPN providers rather than requiring manual config files
What to watch for
−A single router, not a mesh system — coverage is a one-box problem here
−The interface assumes more networking vocabulary than eero or Deco
−Wi-Fi performance is good but not the reason to buy it; this is a router bought for its software
#ad We do not publish a price we cannot verify, so the button opens Amazon's own listing. How we are funded.
Common questions
What router do I need for fiber internet?+−
One whose WAN port is at least as fast as your plan. Gigabit is fine up to about 940 Mbps; a 2 Gbps plan needs 2.5 Gbps; 5 Gbps and above needs 10 Gbps. Check the LAN ports too — a multi-gig WAN port with Gigabit LAN ports gets the speed into the router and no further on a cable.
Can I use my own router with fiber internet?+−
Almost always. On Verizon Fios you plug straight into the ONT. On AT&T Fiber the supplied gateway has to stay to authenticate the line, but IP passthrough hands everything to your router. Elsewhere, check for a bridge mode so you avoid double NAT.
Do I need a modem for fiber?+−
No. The provider's ONT converts the optical signal to Ethernet and performs the modem job. It is provider-owned and not something you buy, so a fiber modem-router combo is not a real product category.
Illustrative
