CENTURYLINK Greenwave C4000XG
3.5Editor score
FiberOptics only compatibility
Designed for CenturyLink service
Compact residential gateway design
In this guide
Choosing the right Att Fiber Modem is essential for maintaining a reliable and high-speed internet connection throughout your home. With various models available on the market, understanding the specific features and compatibility requirements can help you make an informed decision that meets your needs.
We have carefully evaluated ten top-rated products to create this comprehensive list. Each item was assessed based on its technical specifications, user ratings, and compatibility with fiber optic services. This comparison ensures you receive accurate information to guide your purchase effectively.
Each pick in this list highlights key strengths and potential limitations to give you a clear picture. Prices and availability may change frequently, so verifying current details before buying is recommended. Use this guide to find the perfect modem for your specific internet setup.
Top 3 Picks for Best Att Fiber Modem
NBS AT&T BGW-320 500
4.1Editor score
Integrated built-in ONT support
Concurrent Wi-Fi on 2.4 and 5GHz
Simultaneous phone video and data
Verizon Fios G1100
4.5Editor score
AC1750 dual-band WiFi support
Six available ports for devices
Internal antennas for coverage
Top 10 Best Att Fiber Modem in 2026 Compared
The following table provides a side-by-side comparison of all ten fiber modems. Review the specifications and ratings to determine which model aligns best with your specific internet service provider and home network requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
NBS AT&T BGW-320
Wireless-ax Integrated ONT
Fiber ONLY Compatibility
4 x 4 802.11ax
SFP/SFP+ Cage for Optic
4.1Editor score
Editor's Choice
NETGEAR Nighthawk CAX30
DOCSIS 3.1 Cable Modem
AX2700 WiFi 6 Router
Up to 2.7 Gbps
Compatible with Cable Providers
4.1Editor score
Best Premium
NETGEAR CM3000
DOCSIS 3.1 Mid/High-Split
2.5 Gig Ethernet Port
Plans up to 2.5Gbps
Cable Internet Only
4.2Editor score
NBS AT&T Wireless-ax (Renewed)
Integrated Built-in ONT
Fiber ONLY Gateway
Renewed Product Condition
Network Router Type
1.0Editor score
Hitron CODA56
DOCSIS 3.1 Modem Only
2.5 Gbps Ethernet Port
NO WiFi Included
Cable Providers Only
4.4Editor score
Arris Surfboard S34
DOCSIS 3.1 Modem
2.5Gbps + 1Gbps Ports
Next Gen Upstream
Modem Only Router Required
4.3Editor score
AT&T BGW210
Bonded VDSL2 Wireless
4 x Gigabit Ports
ONT Required for Service
Concurrent Wi-Fi Support
4.1Editor score
CENTURYLINK Greenwave C4000XG
FiberOptics Only Support
No Phone Port for DSL
CenturyLink Greenwave Model
Residential Optical Gateway
3.5Editor score
Verizon Fios G1100
AC1750 Dual-Band WiFi
Six Available Ports
Internal Antennas
Fios Internet Plans
4.5Editor score
NETGEAR CM2050V
DOCSIS 3.1 Modem
2 Phone Lines Support
Up to 2.5Gbps
Xfinity Voice Compatible
4.0Editor score
1. NBS AT&T BGW-320 500 – Best Integrated Gateway
NBS AT&T BGW-320 500
Integrated ONT Technology
4×4 802.11ax Wi-Fi
Simultaneous Voice and Data
The NBS AT&T BGW-320 500 stands out as a top choice for users seeking a single device solution for fiber internet. With an integrated built-in ONT, it simplifies your network by removing the need for separate optical network terminal hardware. This gateway offers robust wireless performance and supports simultaneous voice and data services seamlessly.
Pros
- Built-in ONT removes extra devices
- Supports concurrent phone and video
- High speed wireless capabilities
Cons
- Limited to fiber only use
- Setup may require ISP assistance
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Its Wi-Fi capabilities are impressive, featuring 4 x 4 802.11ax support on both 2.4GHz and 5GHz bands. This ensures high throughput and low latency for activities like streaming and gaming. The device also includes an SFP/SFP+ cage for the optic module, providing flexibility in connection types while maintaining high-speed data transfer over available WAN interfaces.
One trade-off is that this modem is strictly for fiber connections and cannot be used with DSL or cable services. Additionally, while the hardware is powerful, initial activation might require support from your service provider to configure voice and data services correctly. These constraints are acceptable given the performance benefits for AT&T fiber customers.
If you need a reliable gateway that combines voice, video, and high-speed data in one unit, this is an excellent pick. It is ideal for households that want to reduce clutter and maximize their fiber internet potential without adding extra equipment to their setup.
This gateway offers solid performance for voice and data integration.
Streamlined Home Networking
Integrating the ONT directly into the gateway reduces physical clutter and simplifies your home network cabling significantly.
High-Speed Wireless Support
With support for 802.11ax on dual bands, this device ensures smooth connectivity for multiple devices at once.
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2. NETGEAR Nighthawk CAX30 – High Speed Combo
NETGEAR Nighthawk CAX30
DOCSIS 3.1 Modem
AX2700 WiFi 6 Router
4 Gigabit Ethernet Ports
The NETGEAR Nighthawk CAX30 is a powerful combination of a cable modem and router designed to maximize home internet potential. It supports DOCSIS 3.1 standards, allowing for faster downloads and smoother performance across gaming and video calls. This device is approved for use with major cable providers like Xfinity and Spectrum.
Pros
- All-in-one modem and router
- Cable internet compatible
- Strong whole-home coverage
Cons
- Not for fiber or DSL
- Monthly fee might apply
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Its WiFi 6 coverage provides dual-band connectivity that can reach up to 2,000 square feet. This capacity supports 25+ connected devices, making it suitable for crowded households. The inclusion of four Gigabit Ethernet ports ensures that devices like gaming consoles can maintain stable, low-latency wired connections when needed.
While this unit offers great performance, it is strictly for cable internet and will not work with fiber services like AT&T or Verizon. Also, it requires ISP activation after setup, which can take time depending on your provider. However, the ease of management via the Nighthawk app adds significant value for most users.
Choose this if you want a robust solution for cable internet that handles high speeds and multiple devices effectively. It is a strong option for families looking to upgrade their current setup without buying separate modem and router components.
This combo unit delivers reliable cable internet speeds with ease.
Effortless Network Management
The Nighthawk app lets you manage WiFi and pause devices from anywhere with an active internet connection.
Security Features
Built-in WPA3 encryption and firewall protection help keep your family and devices safe from online threats.
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3. NETGEAR CM3000 – Future-Proof Cable Modem
NETGEAR CM3000
DOCSIS 3.1 Modem
2.5 Gig Ethernet Port
Mid/High-Split Support
The NETGEAR CM3000 is designed to handle today's fastest cable internet speeds with ease. As a mid/high-split DOCSIS 3.1 modem, it unlocks faster download and upload speeds for activities like gaming and video conferencing. This device is approved for use with Xfinity, Spectrum, and Cox on plans up to 2.5Gbps.
Pros
- Future-proof high-speed support
- Multiple gigabit ports
- Works with major providers
Cons
- Not for fiber service
- Requires separate router
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It features a 2.5 Gig Ethernet port that connects your router for the fastest speeds available in your area. You can also combine its two 1 Gig ports on a compatible router to reach speeds up to 2 Gbps. This flexibility makes it a great choice for users wanting to maximize their bandwidth.
One limitation is that this modem is strictly for cable internet and will not work with fiber or DSL. Additionally, you must purchase a separate router to get wireless connectivity. Despite this, the ability to handle multi-gig plans makes it a solid investment for power users.
If you are looking for a modem that can handle high-speed upgrades and support your gaming or streaming needs, this is a strong candidate. It offers the necessary hardware to ensure your network is ready for future speed increases.
This modem provides the bandwidth needed for high-speed cable plans.
Gaming and Video Performance
DOCSIS 3.1 Active Queue Management improves response times for lag-free gaming and video calls.
Easy Network Management
Download the free Nighthawk app to manage your network from anywhere after setup is complete.
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4. NBS AT&T Wireless-ax (Renewed) – Cost-Effective Option
NBS AT&T Wireless-ax (Renewed)
Integrated Built-in ONT
Fiber ONLY Gateway
Renewed Product
The NBS AT&T Wireless-ax (Renewed) offers a potential cost-saving alternative for fiber users looking for a gateway with integrated ONT. It is designed to work only with fiber services and provides wireless-ax capabilities. This renewed option might be attractive for budget-conscious buyers, though it comes with notable caveats.
Pros
- Lower cost option available
- Integrated ONT reduces need for extra device
- Wireless-ax support
Cons
- Low rating reported
- Renewed condition risks
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Its main strength is the integration of the ONT and voice gateway, which simplifies setup for AT&T fiber users. However, the low user rating suggests reliability issues may exist. Buying a renewed product means you are taking a risk on the condition and longevity of the unit compared to a new one.
The trade-off is clear: you save money upfront but risk potential compatibility or performance issues. It is essential to check return policies when buying renewed electronics. For some, this risk might be worth the lower price, but others might prefer the assurance of new hardware.
This product is a consideration for those who need a specific AT&T gateway at a lower price point. Just be aware of the potential risks and ensure you have a backup plan if the unit does not meet your needs.
Budget buyers might find this option appealing despite low ratings.
Affordable Gateway Solution
Renewed products can offer significant savings compared to buying brand new equipment from the manufacturer.
Fiber Compatibility
This device is designed specifically for fiber services and will not work with other internet types.
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5. Hitron CODA56 – High-Speed Modem Only
Hitron CODA56
DOCSIS 3.1 Modem
2.5 Gbps Port
Modem Only
The Hitron CODA56 is a dedicated modem designed for users who need high-speed cable internet without built-in WiFi. It supports plans up to 2.5 Gbps via a 2.5 Gbps Ethernet port. This device is certified for use with Xfinity, Spectrum, and Cox, making it a versatile choice for many households.
Pros
- Supports up to 2.5Gbps
- No WiFi needed for setup
- Compatible with major providers
Cons
- Requires separate router
- Not for fiber service
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Because it is a modem only, you must purchase a separate router to get wireless internet. This setup allows you to choose a router that fits your specific needs for coverage and performance. It is ideal for users who already own a compatible router or prefer to upgrade their wireless gear separately.
One downside is that it will not work with fiber or DSL services, limiting its use to cable internet. Also, you cannot connect multiple devices without a router. However, the low latency and DOCSIS 3.1 technology make it excellent for gaming and streaming when paired correctly.
If you want maximum flexibility in your network setup and need high-speed cable support, this modem is a strong choice. It allows you to focus on getting the best router for your home while ensuring the modem handles data efficiently.
This modem delivers speed but needs a separate router for WiFi.
Flexible Router Pairing
Pair this modem with any WiFi router or mesh system for wireless connectivity throughout your home.
Optimized for Gaming
DOCSIS 3.1 technology ensures low latency for smooth 4K streaming and gaming experiences.
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6. Arris Surfboard S34 – Compact Multi-Gig Modem
Arris Surfboard S34
DOCSIS 3.1 Multi-Gig
2.5Gbps + 1Gbps Ports
Next Gen Upstream
The Arris Surfboard S34 is a compact modem built for today and tomorrow with DOCSIS 3.1 performance. It supports cable plans up to 2.5 Gbps and features a 2.5 Gigabit Ethernet port for connecting high-speed routers. This modem also includes a 1 Gigabit port for additional wired devices.
Pros
- Compact modern design
- Supports high upstream speeds
- Multiple Ethernet ports
Cons
- Router required for WiFi
- Cable internet only
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Its compact design saves space while providing simple LED indicators for power and online status. It supports next-generation upload speeds, making it future-proof for upcoming provider tiers. This device is qualified for use with Cox, Xfinity, and Spectrum, ensuring broad compatibility.
As a modem-only device, you will need a separate router for wireless coverage. It does not support fiber or DSL services, so check your internet type before buying. Despite this, its reliability and port configuration make it a great option for cable users.
Choose this if you want a small, reliable modem that can handle multi-gig speeds and future uploads. It is a solid choice for those who prefer to keep their modem and router separate for better control over their network.
This compact modem supports high-speed uploads efficiently.
Space-Saving Design
The modern footprint of this modem helps you save space while maintaining robust connectivity.
CableLabs Certified
All SURFboard modems are tested and qualified for use with major US Internet Service Providers.
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7. AT&T BGW210 – VDSL2 Voice Gateway
AT&T BGW210
Bonded VDSL2
4 x Gigabit Ports
ONT Required
The AT&T BGW210 is a wireless voice gateway designed for bonded VDSL2 connections. It offers four Gigabit Ethernet ports and supports concurrent Wi-Fi on 2.4GHz and 5GHz bands. This device includes a single-port voice FXS for telephone services and requires an external ONT to work with your service.
Pros
- Strong voice support
- Multiple Ethernet ports
- Wireless connectivity
Cons
- Requires separate ONT
- DSL only service
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Its strong voice support and multiple ports make it suitable for households that need landline connectivity and wired connections for other devices. The 400 mW power output ensures decent wireless coverage for basic needs. It includes necessary accessories like a power adapter and Ethernet cord.
One trade-off is that this unit requires an external ONT to function, which adds a bit of complexity to setup. It is also limited to DSL services and cannot be used with fiber directly. However, for those with existing DSL service, it provides a reliable solution for voice and data.
This gateway is a good fit for users who need voice and data integration on DSL lines. It offers solid connectivity options and ease of use for those who already have the required ONT hardware in place.
A solid choice for DSL users requiring voice gateway features.
Voice Service Integration
The single-port voice FXS allows for primary line VoIP telephone service alongside internet data.
Port Connectivity
Four Gigabit Ethernet ports allow you to connect multiple devices directly to the gateway for stability.
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8. CENTURYLINK Greenwave C4000XG – Budget Fiber Gateway
CENTURYLINK Greenwave C4000XG
FiberOptics Only
No Phone Port
CenturyLink Supported
The CENTURYLINK Greenwave C4000XG is a straightforward gateway designed specifically for fiber optics. It is priced attractively for budget-conscious users who need a basic solution for their internet. This unit does not support DSL phone ports, ensuring it is focused solely on fiber service requirements.
Pros
- Low cost option
- Supports fiber optics
- No DSL phone port
Cons
- Limited to CenturyLink
- Basic feature set
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Its main benefit is its compatibility with CenturyLink fiber services and its compact residential design. However, it is not for DSL and may have a more basic feature set compared to advanced modems. The low rating suggests users might want to consider other options if they need advanced features.
The trade-off here is clear: you get a cheap gateway that works with your specific ISP, but you may miss out on advanced capabilities. It is best for users who need a simple replacement and do not require extra ports or advanced WiFi features.
This product is a solid budget pick for CenturyLink fiber users who want an affordable replacement. Just ensure your service type matches the requirements before purchasing.
This budget gateway serves CenturyLink fiber needs.
Fiber Focus
This device supports FiberOptics only and does not have a phone port for DSL service.
Affordable Option
With a low price point, this gateway is an accessible choice for basic residential fiber needs.
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9. Verizon Fios G1100 – Reliable Fios Gateway
Verizon Fios G1100
AC1750 Dual-Band
Six Available Ports
Internal Antennas
The Verizon Fios G1100 Quantum Gateway Router is a well-regarded device for Verizon Fios Internet plans. It offers AC1750 dual-band WiFi coverage across your home. With six available ports and internal antennas, it provides reliable connections for multiple devices like streaming sticks and gaming consoles.
Pros
- High user rating
- Six ports for devices
- Optimized for Fios
Cons
- Fios specific use
- 2019 version
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Its 4.5 rating indicates strong user satisfaction, likely due to its seamless integration with Fios service. The easy-to-use app interface helps you manage your network easily. However, this device is engineered specifically for Verizon Fios and may not work with other providers.
One consideration is that this is a 2019 version, meaning it may lack some newer WiFi features. But for Fios users, it offers consistent performance and security. The balance of features makes it a premium choice for those in the Verizon ecosystem.
If you are a Verizon Fios user, this gateway is a reliable pick that ensures good coverage and performance. It is worth considering for the stability and app control it provides for your home network.
This premium gateway supports Fios with excellent user ratings.
Advanced Security Features
The G1100 provides advanced security features to keep your devices safe while you work from home.
Coverage and Ports
Internal antennas and six ports ensure seamless internet coverage for multiple devices.
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10. NETGEAR CM2050V – Modem with Voice Lines
NETGEAR CM2050V
DOCSIS 3.1
Up to 2.5Gbps
2 Phone Lines
The NETGEAR Nighthawk CM2050V is a specialized modem for Xfinity Voice and internet plans. It supports cable plans up to 2.5Gbps with a 2.5Gbps Ethernet port. This modem allows for two telephone lines and supports features like caller ID and 3-way conference calling.
Pros
- Voice lines included
- Multi-gig speed
- Certified for Xfinity
Cons
- Cable and Xfinity only
- Separate router needed
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It is ideal for Xfinity triple play plans, providing high-speed data while maintaining voice service. You will need a separate router for WiFi connectivity, which allows flexibility for your wireless setup. However, it will not work with providers other than Xfinity.
The trade-off is that this unit is limited to Xfinity and may require a separate router purchase. But for those who need voice and data on one connection, it is a strong option. The 2.5Gbps port ensures you get the full speed of your plan.
Choose this if you have Xfinity Voice and want a reliable modem that handles high speeds and phone lines well. It is a great choice for households that want to simplify their billing by combining voice and internet services.
This modem supports Xfinity voice and data needs effectively.
Voice Feature Support
This device supports enhanced call features like caller ID and 3-way conference calling for your telephone lines.
Fast Setup
Easy and fast setup processes ensure you get online quickly with minimal technical hassle.
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Buying Guide – How to Choose the Best Att Fiber Modem
Selecting the right modem depends on your internet service provider and specific home needs. This guide breaks down the key factors to consider before making your purchase.
Service Provider Compatibility
Check if your service provider requires a specific modem type. For fiber, you need an ONT or gateway that matches the fiber network. For cable, look for DOCSIS 3.1 models. Verify this with your ISP to avoid purchasing a unit that cannot connect.
Always confirm compatibility with your provider before buying to ensure the device works with your specific internet type.
Speed Support
Consider the speed plans you have or plan to upgrade to. Ensure the modem supports these speeds. For fiber, look for high-speed ONTs or gateways. For cable, a 2.5Gbps port may be useful for future proofing.
Choose a modem that can handle your current speed and potential future upgrades.
Voice Services
If you have home phone service, ensure the modem includes voice features. Some gateways have FXS ports for direct phone connections. Others may require separate VoIP setup. Verify this based on your home needs.
Ensure your modem supports voice service if you need home phone lines.
Integrated ONT vs Separate
For fiber users, integrated ONT gateways simplify setup by combining the modem and optical network terminal. This reduces equipment count and cabling needs. If your provider supplies a separate ONT, you may need a router that connects to it instead.
Integrated ONT gateways reduce clutter but are specific to fiber providers.
Wireless Capabilities
Check the Wi-Fi standards and range of the device. Some gateways have dual-band support for better coverage. If your modem does not have Wi-Fi, you will need to purchase a separate router. Assess your home size to ensure coverage is sufficient.
Ensure wireless capabilities match your home size or plan to add a separate router.
Ethernet Ports
Look at the number and speed of Ethernet ports. Gigabit ports are standard, but 2.5Gbps ports offer faster wired connections. Consider how many devices you will connect directly to the modem for stable performance.
Make sure there are enough ports for your wired devices.
Security Features
Modern modems often include built-in security features like firewalls and WPA3 encryption. These protect your network from potential threats. Some brands offer additional security apps that provide extra protection layers. Check what is included in your choice.
Look for security features to protect your network from threats.
Future-Proofing
Consider choosing a device that supports higher speeds than your current plan. This ensures you do not need to upgrade hardware soon. For example, a modem with 2.5Gbps ports is ready for faster internet plans. This helps avoid extra costs later.
Pick a device that supports higher speeds to stay ready for upgrades.
How to Use and Care for Your Att Fiber Modem
Start by connecting the modem to your internet source properly. For fiber, ensure the optical cable is plugged into the ONT port securely. For cable, connect the coaxial cable. Use an Ethernet cable to link the modem to your router or computer for initial setup.
Activate your modem through your service provider's website or app. Follow the steps to register the device MAC address. This process ensures the modem is recognized on your network. Once activated, you can set up your Wi-Fi name and password.
Keep your modem in a well-ventilated area to avoid overheating. Dust accumulation can affect performance, so clean it gently with a dry cloth occasionally. Regularly restart the device to clear any temporary glitches and maintain stability.
Frequently Asked Questions
Can I use a cable modem for fiber internet?
No, cable modems cannot be used for fiber internet. Fiber requires a different connection type and often an ONT to convert light signals. Always ensure you purchase a device that matches your specific internet service.
Do I need a router if I have a gateway?
Most gateways have built-in WiFi, but you can still use a separate router if needed. For better coverage or advanced settings, adding a dedicated router can improve performance. Just check compatibility to ensure proper connection.
What is an ONT?
An ONT, or Optical Network Terminal, is required for fiber internet to convert optical signals into electrical data. Some gateways have this built-in, while others require a separate unit. Confirm your setup needs with your provider.
Will this modem work with all providers?
Most modems are designed for specific internet types like cable or fiber. While some work with multiple providers, others are limited to one. Always check the compatibility list on the product page before buying.
How do I check if my modem is working correctly?
Use your service provider's app or website to check connection status. You can also run a speed test to see if your speeds match your plan. If issues occur, restart the modem or contact support for help.
Can I keep my own modem to save money?
Yes, buying your own modem can save you monthly rental fees from providers. Ensure it is approved for your internet type and speed before purchasing. Check with your provider for a list of compatible devices.
What happens if I move to a new house?
If you move to a new location, check if your modem is compatible with the provider there. You may need to contact them to register the device again. Some providers have different hardware requirements by region.
How do I reset my modem?
Most modems have a small reset button on the back. Use a pin to press it for about 10 seconds to restore factory settings. Be aware that this will erase your custom settings and require reconfiguration.
Final Thoughts on Choosing the Best Att Fiber Modem
We reviewed ten top products ranging from integrated gateways to high-speed modems. The NBS AT&T BGW-320 offers great integration for fiber users. For budget needs, the CENTURYLINK Greenwave C4000XG is a viable choice.
Prioritize compatibility with your service provider first. Ensure the modem supports your current speed plans. Also consider whether you need voice features or separate routers for your home setup.
Remember to check current prices and availability before buying as details can change. Use this guide to find the right match for your internet needs and enjoy a reliable connection.