CenturyLink

C4000BG CenturyLink Bonded Line Wi Fi DSL Router

Name: C4000BG CenturyLink Bonded Line Wi Fi DSL Router
Brand: CenturyLink
SKU: B0977WWVYF

Status: C4000BG CenturyLink Bonded Line Wi Fi DSL Router: Unavailable on Amazon as of 2026-10-06 22:25 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The C4000BG CenturyLink Bonded Line Wi Fi DSL Router: Wi-Fi 6 (802.11ax), rated up to 3x faster than the previous AC generation; main trade-off: only 2-stream connectivity; 4-stream Wi-Fi 6 routers offer more headroom.

Unavailable on Amazon as of 2026-10-06 22:25 UTC

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For home networking and Wi-Fi gear, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Wi-Fi 6 (802.11ax), rated up to 3x faster than the previous AC generation
✓ Up to 3 Gbps combined: 600 Mbps + 2400 Mbps with 2-stream connectivity
✓ 160MHz channel support doubles 80MHz bandwidth for gigabit-capable devices
✓ 1024-QAM gives a 38% higher data rate than 256-QAM on 802.11ac
✓ One SSID for the whole home; supports ADSL and VDSL profiles up to 17a

Cons

✗ Only 2-stream connectivity; 4-stream Wi-Fi 6 routers offer more headroom
✗ Gigabit Wi-Fi needs 160MHz-capable clients; older devices see lower speeds
✗ Wi-Fi 6, not 6E: no 6GHz band listed in the specs
✗ VDSL support stops at profile 17a; no 35b profile listed

Manufacturer description

The CenturyLink C4000BG is a Wi-Fi 6 xDSL router built for CenturyLink bonded-line DSL service. It puts the DSL connection and the wireless router in one box. It uses the Wi-Fi Certified 6 (802.11ax) standard, which CenturyLink rates as up to 3x faster than the previous AC generation, with extra capacity for homes full of connected devices. Combined wireless throughput reaches up to 3 Gbps, split as 600 Mbps plus 2400 Mbps with 2-stream connectivity. 160MHz channels double the bandwidth of 80MHz channels, bringing gigabit-class speeds to compatible laptops and phones. 1024-QAM modulation…

SpecPicks Verdict

SpecPicks scored C4000BG CenturyLink Bonded Line Wi Fi DSL Router using a rating × review-volume × price-fit model applied to published specs and reviews across the networking category. CenturyLink's networking lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for networking of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does the C4000BG work with CenturyLink bonded DSL lines?

Yes. It is sold as a CenturyLink bonded-line DSL router and supports all ADSL and VDSL profiles up to 17a. Check with CenturyLink that your line and plan are set up for the C4000BG before you install it.

What Wi-Fi standard and speeds does the C4000BG support?

It is a Wi-Fi Certified 6 (802.11ax) router with up to 3 Gbps of combined wireless speed, split as 600 Mbps plus 2400 Mbps with 2-stream connectivity.

Will my laptop or phone actually get gigabit Wi-Fi speeds?

Only if the device supports 160MHz channels. The C4000BG's 160MHz support doubles the bandwidth of 80MHz channels, but devices limited to 80MHz or older Wi-Fi standards will connect at lower rates.

Does the C4000BG support Wi-Fi 6E or the 6GHz band?

No 6GHz band is listed. The C4000BG is described as a Wi-Fi 6 router with 600 Mbps and 2400 Mbps bands. If you need Wi-Fi 6E, check the product listing to confirm before buying.

Do I have to manage separate network names for each band?

No. The C4000BG uses one Wi-Fi SSID for the entire home, so your devices join a single network name instead of separate 2.4GHz and 5GHz networks.

Key Features

Ultra-fast wireless 4K streaming
Up to 3 Gbps Speed - 600+2400 Mbps with 2-stream connectivity
160MHZ Channel Support- Doubles the speeds as offered by 80MHz channels to provide gigabit speeds for compatible mobile devices and laptops
1024-QAM - 38% increase in data rate compared to 256-QAM 802.11ac Supports all ADSL or VDSL profiles up to 17a
One Wi-Fi SSID for the entire home

Full Specifications

Brand	CenturyLink
Coverage	Whole Home
Frequency	160 MHz
Model Name	C4000BG
Unit Count	1.0 Count
Antenna Type	Internal
Connectivity	Wireless, WiFi
Model Number	C4000BG
Control Method	App
Connection Type	Wireless
Controller Type	App Control
Mfr Part Number	C4000BG
Number of Ports	4
Special Feature	WPS
Antenna Location	Gaming, Home
Wi-Fi Generation	Wi-Fi 6
Security Protocol	WPA3
Compatible Devices	Laptop
Data Transfer Rate	2400 Megabits Per Second
LAN Port Bandwidth	1000 Mbps

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