Zyxel C3000Z CenturyLink Modem Router | Bonded VDSL2 Dual-Band

The renewed Zyxel C3000Z is a bonded VDSL2 modem router built for CenturyLink DSL internet. It combines a vectoring-capable DSL modem with AC2200 dual-band WiFi in one device, replacing the gateway you rent from your provider and ending the monthly equipment fee. It activates easily on CenturyLink service and ships with our Activation Guarantee and 90-day full coverage warranty.

Key Takeaways

• Bonded VDSL2 with vectoring and support for the VDSL2 35b profile, plus a Gigabit WAN port that converts to a fifth LAN port in DSL mode.
• AC2200 dual-band WiFi: up to 1.7 Gbps on 5 GHz and 450 Mbps on 2.4 GHz, with up to 4 SSIDs for separate guest and family networks.
• Best for CenturyLink and Brightspeed plans up to 200 Mbps. On gigabit plans, choose one of our C4000-series gateways instead.
• Renewed and tested, with our Activation Guarantee, 90-day full coverage warranty, and USA-based support.

Is the Zyxel C3000Z Compatible with My Internet Provider?

The C3000Z is primarily used with and compatible with CenturyLink DSL service in most areas. It is also used on Brightspeed DSL in the former CenturyLink territories Brightspeed now operates. Some service plan speeds may not be supported, so always confirm this model works with your specific plan and address before ordering.

The C3000Z does not work with cable internet (Xfinity, Spectrum, Cox), Verizon Fios, AT&T service, satellite, or 5G home internet. It connects through a telephone-style DSL wall jack, not a coaxial jack.

Zyxel C3000Z Speeds: Know Before You Buy

The C3000Z supports wired download speeds up to 200 Mbps and uploads up to 100 Mbps. That comfortably covers the DSL tiers most CenturyLink and Brightspeed customers are on. In the past, CenturyLink supplied the C3000Z as a rental on gigabit plans, but we do not recommend it for those plans: limiting yourself to 200 Mbps while paying for gigabit service does not make sense. If you are on a gigabit or fiber plan, choose the GreenWave C4000LZ (up to 2.5 Gbps) or GreenWave C4000LG (up to 1 Gbps) instead.

Bonded VDSL2 with Vectoring

The C3000Z supports VDSL2 bonding with vectoring, which reduces cross-talk on the line for up to 150% better performance and range, and it supports the latest VDSL2 35b profile. If your CenturyLink or Brightspeed plan is delivered over a bonded (two-line) pair, the C3000Z handles it natively. A dedicated Gigabit Ethernet WAN port rounds out the hardware, and when the unit runs in DSL mode, that port converts to a fifth Gigabit LAN port for extra wired connections.

Which CenturyLink Gateway Should You Buy?

We carry five CenturyLink-compatible gateways. The C3000Z and the Actiontec C3000A both handle bonded (two-line) VDSL2, with the C3000Z adding vectoring and the 35b profile while the C3000A adds G.fast and GPON fiber support. The GreenWave C4000LZ and C4000LG bring WiFi 6 and higher speed ceilings for gigabit and fiber plans. The Technicolor C2100T is the budget pick and the only one with VoIP phone ports for CenturyLink home phone. Your provider can confirm your line type and plan speed in one quick call.

Dual-Band WiFi for Busy Homes

The C3000Z's AC2200 dual-band WiFi delivers up to 1.7 Gbps over 5 GHz and 450 Mbps over 2.4 GHz, with high-powered radios on both bands extending coverage for homes with a growing number of wireless devices. Support for up to 4 SSIDs lets you run separate networks for family, guests, and streaming devices without extra hardware. Listed wireless rates are theoretical maximums, and actual speeds vary with your network environment and internet plan.

Security and Remote Management

Dual Ethernet firewalls (NAT and SPI) identify and manage malicious content before it reaches your devices, and WPA2/WPA wireless security with a hardware WPS button makes secure setup a one-press job. TR-069 remote management compliance means your provider can help troubleshoot issues without sending a technician to your home.

Zyxel C3000Z Specs at a Glance

Save on Modem Rental Fees

CenturyLink and Brightspeed charge around $15 per month to lease a gateway, which is $180 a year for equipment you could own. At its current price, this renewed C3000Z pays for itself in about six months, and everything after that is savings. If your rented gateway is aging or dropping connections, our guide on how long modems last covers the signs it is time to replace it.

What's in the Box

• Zyxel C3000Z DSL modem router (Renewed)
• Ethernet cable
• Power supply cable
• DSL / phone cable
• Online installation manual
• ModemGuides Activation Guarantee

Why Buy the Zyxel C3000Z from ModemGuides

• 90-day full coverage warranty on every modem we sell, including this renewed C3000Z.
• Activation Guarantee: if this modem will not activate on your compatible plan, we make it right.
• USA-based customer service and tech support staffed by people who actually know networking gear.
• Fast shipping from US warehouses, so most orders arrive in 1 to 3 business days.
• Setup and troubleshooting guides available across ModemGuides.com to help you get online without the runaround.
• Small US business that puts customer experience first, with real humans answering your questions.

Zyxel C3000Z Frequently Asked Questions

Is the Zyxel C3000Z compatible with CenturyLink?

Yes. The C3000Z is primarily used with CenturyLink DSL service and activates easily in most areas. Some plan speeds may not be supported, so confirm your specific plan with CenturyLink before ordering.

Does the Zyxel C3000Z work with Brightspeed?

The C3000Z is used on Brightspeed DSL service in the former CenturyLink territories Brightspeed now operates. If you are a Brightspeed customer, confirm the C3000Z is approved for your plan and address before ordering.

Is the C3000Z good for gigabit plans?

No. The C3000Z supports wired speeds up to 200 Mbps, so we do not recommend it for gigabit plans even though CenturyLink once rented it on those tiers. For gigabit or fiber service, choose the GreenWave C4000LZ or C4000LG instead.

What is the difference between the Zyxel C3000Z and Actiontec C3000A?

Both support bonded (two-line) VDSL2 for CenturyLink and Brightspeed. Based on our listings, the C3000Z adds vectoring and the VDSL2 35b profile plus up to 4 SSIDs, while the C3000A adds G.fast and GPON fiber support, WPA3, and EasyMesh certification. For standard bonded DSL plans, either works; for fiber deployments or mesh expansion plans, the C3000A is the better fit.

Does the C3000Z support bonded DSL?

Yes. Bonded VDSL2 with vectoring is the C3000Z's core feature, combining two copper pairs into one faster, more stable connection. It also works on standard single-line plans.

Is the C3000Z a modem and a router?

Yes. The C3000Z is an all-in-one gateway with a built-in AC2200 dual-band WiFi router, so you do not need any separate hardware to get online.

Can I set up separate guest WiFi on the C3000Z?

Yes. The C3000Z supports up to 4 SSIDs, so you can run separate wireless networks for family, guests, and streaming devices from one gateway.

How do I set up the Zyxel C3000Z?

Connect the DSL cable from your wall jack, plug in power, and the C3000Z activates easily on CenturyLink service. The hardware WPS button connects wireless devices with one press, and the onboard admin interface handles WiFi names, passwords, and network settings.

Is this C3000Z new or refurbished?

This C3000Z is a Renewed unit that has been professionally inspected and tested, backed by our 90-day full coverage warranty and Activation Guarantee.

What happens if the modem stops working?

If anything goes wrong within the first 90 days, contact our USA-based support team and we will troubleshoot, replace, or refund. We stand behind every modem we ship.