Atlantic Broadband Approved Modems

To make your decision easier when choosing a modem, three categories of modems exist. Presented below, the recommended Atlantic Broadband approved modems (categorized by DOCSIS 3.1 and WiFi).

Read the Cable Modem Buying Guide to help you choose a modem. Do not forget to purchase your modem accessories.

Internet providers have begun removing some DOCSIS 3.0 modems from their networks. To maximize the years of use from a modem, it is strongly recommended to purchase a DOCSIS 3.1 device (the latest standard).

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Click here to jump to the full Atlantic Broadband approved modem list.

Last Updated: November 1, 2021

Recommended Atlantic Broadband Approved Modems for November 2021

Best DOCSIS 3.1 Modem

Motorola MB8600 DOCSIS 3.1 Atlantic Broadband Approved Modems
Motorola MB8600 Cable Modem
Model #Motorola MB8600
WiFi RouterNo
VoIP Telephone AdapterNo

Best WiFi Modem

NETGEAR Nighthawk AX6000 CAX80 WiFi 6 Router DOCSIS 3.1 Atlantic Broadband Approved Modems
NETGEAR AX6000 CAX80 WiFi 6 Router DOCSIS 3.1 Cable Modem
WiFi RouterYes (WiFi 6)
VoIP Telephone AdapterNo

Full Atlantic Broadband Approved Modem List

The Modems Listed Below Are All DOCSIS 3.0 Modems Unless Indicated as a DOCSIS 3.1 Modem
♦ Indicates an Intel Puma Chipset Defect – Do Not Buy

Note: ✅ means Yes, ❌ means No

BrandModel #ChannelsVoIPWiFi
ARRISSB6190 ♦32×8
ARRISSBG7400AC2 ♦24×8
ARRISSBG7580-AC ♦32×8
ARRISSBG7600AC2 ♦32×8
MotorolaMB8600DOCSIS 3.1
NETGEARCM700 ♦32×8

Channels: first # refers to downstream channels, second # refers to upstream channels (e.g. 16×4, means 16 downstream channels and 4 upstream channels)
DOCSIS 3.1 offers the fastest speeds

VoIP: indicates if the modem has telephone capability

WiFi: indicates if the modem has WiFi capability

Atlantic Broadband Modems Removed in January 2019
ARRIS CM8200 (added)
D-Link DCM-301
Motorola MB7220
Motorola MB7420
Motorola MG7310
Motorola MG7540
Motorola MG7550
NETGEAR C7800 (added)
SMC D3CM1604
TP-Link CR1900
TP-Link TC-7610
TP-Link TC-7620
TP-Link TC7650
TP-Link TC-W7960
Ubee DDM352
Ubee DDM354
Ubee DDW365
Ubee DDW366
Ubee DDW3611
Ubee DDW36C
Zoom 5341J
Zoom 5345
Zoom 5350
Zoom 5352
Zoom 5354
Zoom 5360
Zoom 5363
Zoom 5370

Atlantic Broadband Modems Added in February 2019
Motorola MB8600

Atlantic Broadband Modems Added in April 2020
ARRIS CM8200 (removed)
ARRIS DG1660 (removed)
ARRIS SB6141 (removed)
ARRIS SBG6400 (removed)
ARRIS SBG6580-2 (removed)
ARRIS SBG6700-AC (removed)
ARRIS SBG6782-AC (removed)
Cisco DPC3010 (removed)
Hitron CDA3-35 (removed)
Hitron CGNM-2250 (removed)
Hitron CGNM-3550 (removed)
Hitron CGNM-3552 (removed)
Hitron CGNVM-3582 (removed)
Motorola SB6141 (removed)
Motorola SB6180 (removed)
Motorola SBG6580 (removed)
NETGEAR C3000-100NAS (removed)
NETGEAR C3700-100NAS (removed)
NETGEAR C6220 (removed)
NETGEAR C6300 (removed)
NETGEAR N450 (CG3000Dv2) (removed)
NETGEAR CM400 (removed)

Atlantic Broadband Approved Modems Added in January 2021

Atlantic Broadband Approved Modems Removed in March 2021

Atlantic Broadband Company Information

Atlantic Broadband Phone Support: 1-888-536-9600

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Atlantic Broadband YouTube

Atlantic Broadband serves the following areas: Central New Hampshire, Eastern Connecticut, Eastern Virginia, Delaware, Maryland, South Carolina (Aiken), Southern Florida (Miami), Southern Maine, and Western Pennsylvania.

Approved Modems Helpful Resources

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32 thoughts on “Atlantic Broadband Approved Modems”

    • Mary, you will need to personally contact Atlantic Broadband to have equipment activated for you. Your personal info was redacted to protect you.

      This site deals with letting people know which modems are approved for each ISP (internet service provider).

  1. Is the NETGEAR CM1200 still in the approved modem list? Hard to find the information and hard to contact customer service. Also, do triple plays (with voice) need to be unbundled first before being able to use this cable modem, provided it is currently approved?

    • Yes, the NETGEAR CM1200 is approved for Atlantic Broadband service (here is Atlantic Broadband’s approved modem list). Keep in mind the CM1200 does not have phone capabilities, so you won’t be able to take advantage of your triple play bundle unless you are using a phone device from Atlantic Broadband. Just activate the new modem with your current plan; there should be no need to unbundle anything unless you want to delete services.

      Hope that helps, Roberto.

      • I called and Atlantic Broadband Tech support told me they do not have an approved list and they will not approve any type of modem, but the Tech Support Rep said if I give him a model number that he can let me know if he commonly sees it in use, he said the CM1000 he sees a lot… . I got the V2, they updated my Firmware on it so they support it, but I have had nothing but issues with connection interruption via MDD Message Timeout, ABB tells me signal is excellent and Netgear hasnt been able to resolve yet. Never had connection issues like this before. We’ll see if Netgear can resolve this weekend or I’m returning it for a Motorolla.

        • Hello Steve,

          Sorry about your connection issues. The tech rep lied to you. The Atlantic Broadband approved modem list is listed on their website (click the first gray box that says “What modems can I use with my Atlantic Broadband High-Speed Internet service?”). You often have to talk to multiple reps since they will likely give different answers depending on who you talk to at the company. Hopefully your issue gets resolved over the weekend.

          • I knew it sounded wrong when talking to the rep… I had the Arris SB8200, Motorola MB8600, and Netgear CM1000 written down when I called too, irritating when you do your homework and something like that happens… Your site had been very helpful!! Thank you! Unfortunately when I purchased my CM1000 I didn’t think V2 would be an issue and now Netgear is elevating me to a Sr Tech Rep, nothing but headaches — I’m tech savvy and done everything possible no splitters direct line in 10ft from box.

            Thanks again, maybe I’m just unlucky but V2 has not been a good experience, maybe something to keep an eye on.

            • Thanks for replying back, Steve. If others have problems with the NETGEAR CM1000v2, this page will be updated to stay away from that model. You may also have a bad firmware patch from Atlantic Broadband. Or maybe you have bad wiring to your home. If you can, you should return the CM1000v2 and try a different device.

              NETGEAR should stop creating different versions of their hardware; it is creating issues with ISPs and customers. If a company needs to create a different version of a modem (v1 vs. v2), they should create a whole new sku model. Someone else with a different ISP is having issues with the NETGEAR C7000v2. It seems NETGEAR’S v2 models are troublesome. Unfortunately, when ordering from retailers, you often are not told which version of the modem you are receiving. Sorry again for all your issues. Good luck, Steve!

  2. I have been having dropped connections with my Motorola MG7700 and my service tech said it may because it’s DOCSIS 3.0 – they swapped out the modem/router with a temporary one and I haven’t had any issues. I’m trying to figure out if I need to purchase a different modem or contact Motorola about the one I have being defective.

    • Kenneth,

      The Motorola MG7700 is not on the Atlantic Broadband approved modem list, so that could be the issue. It is okay if they activated it, but since it is not verified to work on the Atlantic Broadband network, you will likely run into occasional issues. The MG7700 is likely not defective. The suggestion is to only use modems on the official certified list for Atlantic Broadband.

  3. I’m getting a message when I access roku that I can’t connect to network due to low signal strength. When we first purchased ABB the strength wasn’t great but good enough to connect but now we can’t get any connection. Very frustrating. Will adding a router help?

    • Adding a router will not improve your situation. WiFi routers just add more possible bottlenecks to signal strength (a wireless signal has to account for many devices in your home and your neighbors’ homes). If you are hardwired into your Roku device (ethernet cable to your Roku device from your cable modem), that is the best connection you are going to get. Did you try unplugging your modem for few seconds to let it restart? You can also try swapping out your coaxial and ethernet cables to new ones to see if that helps.

      Most likely, your signal strength really needs to be addressed by a service tech to determine why your household is so low and to correct the problem. Contact Atlantic Broadband directly and setting an appointment should be your next step, Joann. You may want to refer to this article about How to Check the Signal Strength on a Cable Modem if you contact tech support.

      Roku also has this page about low signal strength (you can signup for a free HDMI extender which may improve your signal reception). One more resource for you, How to Diagnose Cable Modem Issues.

  4. I’d like to have a level 3 or Network engineer reach out to me directly please via email or phone. How can I speak to one directly?

      • I had new electrical ran to a home that I own. I disconnected service and the new tenant is getting internet hooked up. I have the net gear c6300 and everything worked perfectly before. Now I’m being told that you no longer support it. It’s taken nearly 2 months to get these lines ran from the new power pole and now this. Very disappointed in your service and making people spend more and more money.

        • Sorry, Jason, about your situation. is a site that reports on approved modems for each internet service provider (ISP). Use this site to determine what modems are approved with Atlantic Broadband’s network. Yes, the NETGEAR C6300 was removed from the Atlantic Broadband approved modem list in April 2020. ISPs occasionally update their approved modems lists.

          You will want to contact Atlantic Broadband directly to voice your complaint.

          • It was removed it April 2020 but continued to work perfectly until November 2020. Now all of the sudden it is no good because they say so. I used the approved list 2 years ago. This list is garbage if you continue to drop modems that are fine and force people to spend more money on new ones.

            • Even if a modem is removed from the list, your ISP may still support it for a few months just like Atlantic Broadband did for you. However, all modems eventually become end-of-life (old modems are dropped and new modems take their place). It is up to the ISP (not if a modem is dropped. If a modem is removed from an ISP’s approved modem list, then the ISP approved modems lists on this site get updated.

              For those concerned about “future-proofing”, always go with the latest tech. Currently for modems that is a DOCSIS 3.1 modem. That will maybe get you a decade or more of use with most ISPs.

  5. Dont buy anything but whats on the approved modem list bought the newest Motorola mb8611 and they wont hook it up its not approved on the list so back to the old one they removed for me untill someone decides to up date there list complete joke sence i have known customers that have modems not on there list after yrs of service look around guys do your homework dont be out 160 bucks dont go latest and greatest tech.

    • That is why approved modem lists exist. Customers will know which modems work with an internet provider’s network. Select customers may get away with using a device that is not on an approved modem list due to regional differences. But don’t take a chance on an unapproved modem. Customers should only use what is certified for the ISP’s network and avoid the hassle of trying to activate an unapproved modem.

      For the “modems not on there list after yrs of service” point, modem lists are constantly updated, so customers may be using a modem that has been grandfathered into the network. But those devices will longer be activated if you are activating the device today. Stick to approved modems only for internet service providers.

      Thanks for the comment, Don.

  6. Can you tell me if this modem combo will work with Atlanticbb please

    Motorola MG8702 | DOCSIS 3.1 Cable Modem + Wi-Fi Router (High Speed Combo) with Intelligent Power Boost | AC3200 Wi-Fi Speed |

    • Sorry, Laura M, the only Motorola device that works with Atlantic Broadband is the Motorola MB8600. Only the devices listed at the top of this page will work on their network.

    • No it will not, JC. The NETGEAR C3700 is too old of a modem. As of today, Atlantic Broadband requires a modem to have at least 24 downstream channels. The C3700 only has 8 downstream channels. Only the modems listed above will work for Atlantic Broadband.


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