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CenturyLink

C4000BG CenturyLink Bonded Line Wi Fi DSL Router

Based on 554 reviews
Condition: Used - Like New
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$75.94
Holiday Deal · 20% off was $94.46

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Availability: In Stock.
Fulfilled by BeKind_Electronics
Arrives Friday, Nov 20
Order within 16 hours and 5 minutes

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At a glance

Condition
Used - Like New
Model
C4000BG
Dimensions
4.7"L x 5.7"W x 8.3"H
Weight
2 lb
Special Feature
WPS
Frequency Band Class
Dual-Band
Antenna Type
Internal
Works with
Laptop

Features 5

  • 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

Description

Leading the next generation of Wi-Fi, the C4000BG Wi-Fi 6 xDSL Router is powered by the industry’s latest Wi-Fi Certified 6 802.11 standard that is up to 3x faster than the previous AC generation of WiFi, with additional data capacities in a dense environment to handle current and future home networks. Lightning fast Wi-Fi speeds powers ultra-smooth 4K streaming, online gaming, smart home automation, and more.

Specs 34

Brand CenturyLink
Model Name C4000BG
Special Feature WPS
Frequency Band Class Dual-Band
Wireless Communication Standard 802.11ax
Recommended Uses For Product Gaming, Home
Connectivity Technology Wi-Fi
Antenna Type Internal

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

Same Modem, Same Quality, Half the Cost!
This was one of the exact modems recommended by our internet provider, but at half the cost! Our old modem was seriously outdated and this brand new replacement is working great and the quality of our internet has been restored. Shipping was super fast! The set-up instructions were easy to follow.
Reviewed in the United States on May 12, 2026 by Andrea E Birch
This Router is easy to set up and is a great upgrade to my previous Centurylink router.
The Router arrived several days earlier than expected and packed securely. With help from Google search, YouTube and Century-link i managed to set up the new router and connect all of my devices. The router install only took about 45 minutes, i spent the next 4 hours tying all of my devices to the router. That was not a router problem, instead it was a failure of Google devices and security camera software manufacturers who have made changing WiFi a pain the butt. I liked that i could find my router online and easily turn off the 5mhz band to ease the connection of all of the 2.4 MHz devices. Once connected i enabled the 5 band again and was pleased that everything continued to connect and work flawlessly. The coverage is superb, my house is 2000 sq feet two story and there are no dead spots. I have a camera attached to a city light pole 50 feet in front of my house and the signal strength was great. My previous router could not handle the connected device load and frequently dropped off line. That is not a problem any more. I highly recommend this router. ... show more
Reviewed in the United States on November 10, 2023 by Ace Logan
Bad status readings on DSL modem
I had been using a Zyxel C3000Z DSL modem for three years and it was working good. I had problems on the DSL line and Centurylink resolved the issues (bad underground cable pair). The CL tech recommended that I buy the new Zyxel C4000BG modem. He said that the C3000Z model had issues. I purchased the C4000BG and installed it. It appeared to work OK. However, the DSL Line Status was "Marginal" and it should have been "Good". My C3000Z was showing good. Also on the C4000BG, the downstream SNR was only 9.1 db. That is what was causing the line to be marginal. On my C3000Z, the downstream SNR was 15.1 db. I called the CL tech support line that was listed on the card that came with the modem. I went through the menus and CL did a system check. They said that they found issues on my DSL line and they opened a ticket for the tech to come on site. That is when I decided I needed to return the C4000BG to Amazon. The C4000BG does not provide good system indicator LEDs like the C3000Z. The C4000BG does support Wifi 6 and WPA3 - which is good. ... show more
Reviewed in the United States on June 14, 2025 by Clint Chron
Worked perfectly
Bought this as a backup as my internet service provider is not the most reliable. I live in a rural area. So very glad I did! When I ordered a replacement through my service provider, as it shorted out, it took more than a month to receive it. This one worked and I had in 2 days! Highly recommend!
Reviewed in the United States on May 21, 2026 by Deborah
Attractive modem.
Seems to work ok. Very easy to setup and install. Supported by ISP but unable to connect our Verizon extender to it.
Reviewed in the United States on December 29, 2025 by Cheath
C4000BG via Dontrentyourmodem-com
First off this seller is EXCELLENT, bottom line. Before I purchased a C4000BG from them I ask tons of questions and they were very quick to respond with the right answers! I'm a current Centurylink DSL High Speed internet customer. I replace a C2100T Prism modem/router. The old modem still works great but Centurylink has retired it so there is no support if it bakes. I put it away for backup. Back to this seller and their C4000BG, they shipped a BRAND NEW Centurylink C4000BG with instructions and the setup was a snap, less then 30 minutes. The new modem picked up ALL the current Centurylink network setting from the previous modem except SSID & password BUT it did FILL in my PPP Userid & Password automatically. I did have it handy just in case I needed it. All you have to do is call Centurylink Tech Support to get yours. This new C4000BG is unreal as far as Speed & Broadcast coverage! I have a 2600 sq ft one story home. I did some data gathering with the old modem, just one example my 6 outdoor security cameras were only getting about 58% connectivity now they are averaging 91%, unreal! Let me say it one more time this seller Dontrentyourmodem-com is GREAT! I would buy again with no hesitation. FYI Centurylink was more then willing to help setup this modem with me over the phone just call their Tech Support. ... show more
Reviewed in the United States on June 3, 2023 by Dusty
Great purchase
This item was exactly the model of modem I needed. It came packed neatly. I think it was new-in-box! It worked with no issues and saved me from having tobuy a more expensive modem directly from Centurylink.
Reviewed in the United States on July 5, 2026 by LJM
Final Decision Will Be Coming
Just received this C4000BG Century Link Router/Modem to replace my C3000A that is being phased out. I'm not impressed with the lack of cabling that did not come with it. All that was in the box was the Modem/Router, a white cable and the power cord. The power cord has a Netgear sticker on the power supply that is plugged into the outlet. This has me concerned that a random power cord was just thrown in for the heck of it. Not exactly sure it's compatible so I am using the one from my C3000A instead. No green DSL cable or yellow ethernet cable was in the box. No paperwork about unit information or installation instructions either. Definitely concerned about the reliability of the unit due to these issues. Update will be coming once I have it up and running. Hopefully. Otherwise it's going back. ***Update*** Without paperwork for installation instructions, it took me longer than it should have to get this unit up and running. For something that should have taken a few minutes took me an hour and a half. I used the green DSL cable from my C3000A unit as the white one was of no use to me and if it was, it was too short. Since this is a discounted unit I guess you get what you pay for. Time will tell if it doesn't bomb out on me. So far it is working. Much better than the 13 yr old C3000A that is being put to rest by Century Link. Upgraded my rating a bit due to the current performance of the unit. ... show more
Reviewed in the United States on October 24, 2024 by DM
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