Quick answer: The best Prime Day modem deals in October 2026 are on two DOCSIS 3.1 cable modems with 2.5 Gbps ports: the Hitron CODA56 and the Motorola B12. Both are approved for Xfinity, Spectrum, and Cox. The bigger saving with any modem is ending a monthly rental fee. Prime Big Deal Days runs October 6 and 7, 2026, and deal pricing ends at 11:59 p.m. Pacific on October 7.
Last updated: October 7, 2026
As an Amazon Associate I earn from qualifying purchases. The Hitron CODA56 and Motorola B12 links in this article are sponsored Amazon affiliate links: we receive compensation from the brands. We do not show prices because they change often.
About these deals: Many of these are limited-time offers, and Amazon can change or end them at any time. We do our best to keep this list current, but always check the Amazon listing for the current price and availability before you buy.
Key Takeaways
- Two modem deals stood out when we checked on October 7, 2026: the Hitron CODA56 and the Motorola B12. Both are DOCSIS 3.1 modems with a 2.5 Gbps Ethernet port.
- Skip any DOCSIS 3.0 modem, however low the price. Spectrum has announced it will stop supporting DOCSIS 3.0 modems after October 28, 2026, and Xfinity has been removing older DOCSIS 3.0 models from its approved list.
- A large discount does not make a modem the right one. Match the modem to your provider and plan first.
- A modem has to be approved by your internet provider. Check your provider's list for your plan before ordering, sale or no sale.
Prime Day Modem Deals at a Glance
Both links in this table go to the product's live Amazon listing, which shows the current price.
| Modem | Type | Best For | Works With |
|---|---|---|---|
| Modem: Hitron CODA56 (sponsored Amazon link) | Type: DOCSIS 3.1 modem, 2.5 Gbps port | Best for: Gigabit and multi-gig cable plans | Works with: Xfinity, Spectrum, Cox |
| Modem: Motorola B12 (sponsored Amazon link) | Type: DOCSIS 3.1 modem, 2.5 Gbps port | Best for: Small spaces and multi-gig plans | Works with: Xfinity, Spectrum, Cox |
Best Prime Day Deals on Cable Modems
Both picks are modems only. Neither has WiFi or a phone jack, so each one pairs with a separate router. Both work only with cable internet, not with fiber, DSL, or satellite service.
Hitron CODA56: DOCSIS 3.1 With a 2.5 Gbps Port
The Hitron CODA56 is a DOCSIS 3.1 cable modem with a single 2.5 Gbps Ethernet port. Hitron lists it as certified for Comcast Xfinity, Charter Spectrum, and Cox, and it also works with Astound, Grande, RCN, and Wave. By provider, Hitron rates it for Xfinity plans up to 2.33 Gbps, Cox plans up to 2 Gbps, and Spectrum plans up to 1 Gbps. It carries a 1-year limited warranty with U.S.-based support.
Best for: Gigabit and multi-gig cable plans, and anyone replacing a rented modem with one that will not need replacing again soon.
Check the Hitron CODA56 on AmazonSponsored link: we receive compensation from the brand. As an Amazon Associate I earn from qualifying purchases.
Motorola B12: Compact DOCSIS 3.1 Modem
The Motorola B12 is a DOCSIS 3.1 cable modem with one 2.5 Gbps Ethernet port in a small tower that measures about 3.5 by 3.5 by 5.5 inches. It is a smaller follow-up to Motorola's MB8611 and is approved for Xfinity, Cox, and Spectrum. On Xfinity it is not on the Next Gen Speed Tier list, so uploads run at standard speeds there.
Best for: Tight shelves and media cabinets, and gigabit or multi-gig plans where standard upload speeds are enough.
Check the Motorola B12 on AmazonSponsored link: we receive compensation from the brand. As an Amazon Associate I earn from qualifying purchases.
For more models sorted by speed tier and provider, see our guide to the best DOCSIS 3.1 modems.
Modem Deals to Skip
A discount is not a reason to buy the wrong modem. Two checks will keep you out of trouble.
Any DOCSIS 3.0 Modem or Combo
DOCSIS 3.0 is the older cable standard, and providers are retiring it. Spectrum has announced it will stop supporting DOCSIS 3.0 modems after October 28, 2026. Xfinity has been removing older DOCSIS 3.0 models from its approved list. A DOCSIS 3.0 modem bought on sale this week could need replacing within the month.
The listing title usually says which standard a modem uses. Look for "DOCSIS 3.1." If the title says "DOCSIS 3.0," or shows only a channel count such as 16x4, 24x8, or 32x8 with no mention of 3.1, pass on it. Common DOCSIS 3.0 models include the ARRIS SB6183 and SB6190, the NETGEAR CM500, CM600, CM700, and C7000, and the Motorola MB7621.
A Modem Your Provider Has Not Approved
A modem that is not on your provider's approved list will not activate, whatever it costs. Check the list for your plan's speed tier before you order, and check it again if you change plans.
Refurbished and Like-New Modems That Do Not Need a Sale
Modems hold their performance for years, which makes a tested refurbished or like-new unit a strong alternative to waiting for a discount. These three are sold directly by ModemGuides, not through Amazon, and each is backed by a 90-day warranty and 30-day returns.
ARRIS SURFboard S33
A DOCSIS 3.1 modem with a 2.5 Gbps Ethernet port and a second Gigabit port. It is approved for Xfinity, Spectrum, and Cox, and it suits gigabit and multi-gig plans. On Xfinity it is not listed for the Next Gen upload tiers, so uploads run at standard speeds.
See the ARRIS S33 at ModemGuides
NETGEAR Nighthawk CM1200
A DOCSIS 3.1 modem with four Gigabit Ethernet ports, approved for Xfinity, Spectrum, and Cox. It is a fit for plans up to 1 Gbps.
See the NETGEAR CM1200 at ModemGuides
ARRIS DG3450
A DOCSIS 3.1 modem router combo with built-in WiFi 5 and four Gigabit Ethernet ports, approved for Spectrum plans up to 1 Gbps. It suits Spectrum customers who want one box for both the internet connection and the WiFi. It is not on Xfinity's approved list.
See the ARRIS DG3450 at ModemGuides
Spectrum Customers: The October 28 Deadline
If you have Spectrum internet and own an older modem, this sale lands three weeks before a deadline. Spectrum has announced it will stop supporting DOCSIS 3.0 modems after October 28, 2026. Any DOCSIS 3.1 modem on Spectrum's approved list is unaffected.
Check the label on the bottom or back of your modem for the model number, then compare it against our Spectrum approved modem list. If you need a replacement, our guide to the best modems for Spectrum by speed tier matches a modem to each plan.
How to Pick the Right Modem Deal
- Start with your provider's approved list. A modem that is not approved will not activate. See the lists for Xfinity, Spectrum, and Cox, and confirm on your provider's own page before ordering.
- Buy DOCSIS 3.1. It covers gigabit plans and is the standard providers are keeping.
- Match the Ethernet port to your plan. On a plan faster than 1 Gbps, the modem needs a 2.5 Gbps port. A Gigabit port holds you below the speed you pay for.
- Check for phone service. If your home phone runs through your internet provider, you need a modem with voice ports. Neither Amazon pick above supports phone service.
- Plan for the router. A standalone modem has no WiFi. If your router is also due for replacement, our Prime Day WiFi router deals cover the other half of the setup.
What a Modem Purchase Saves
The discount on a modem is a one-time saving. The rental fee is a monthly one. Cable providers commonly charge $10 to $15 a month for a rented modem or gateway. Once your own modem is activated, you return the rented unit and the fee comes off the bill. A purchased modem typically pays for itself within a year, sale or no sale.
One more monthly fee to kill
Renting your modem? That's $120+ a year.
Own it instead. It pays for itself in months. 90-day warranty and 30-day returns.
Pick your provider:
What to Know About Prime Big Deal Days
- The dates. Prime Big Deal Days 2026 started at 12:01 a.m. Pacific on Tuesday, October 6, and ends at 11:59 p.m. Pacific on Wednesday, October 7.
- Who can shop it. The event's deals are for Amazon Prime members.
- Prices move. Deals can sell out or change price before the event ends. The listing shows the current offer.
- After the event. The event's deals end at 11:59 p.m. Pacific on October 7. Black Friday in late November is typically the next large sale period.
Need a router too?
A modem brings the internet in, and a router spreads it around the house. Our roundup of the best Prime Day WiFi router deals covers single routers and mesh systems for every home size.
Frequently Asked Questions
Are modems on sale for Prime Day?
Yes. During the October 2026 event, the Hitron CODA56 and Motorola B12 were the modem deals we found worth buying when we checked on October 7. The larger saving with any modem is ending the monthly rental fee.
When is October Prime Day 2026?
Amazon's October sale, officially called Prime Big Deal Days, runs Tuesday, October 6 and Wednesday, October 7, 2026. It ends at 11:59 p.m. Pacific on October 7.
Will these modems work with Xfinity, Spectrum, and Cox?
Yes. The Hitron CODA56 and Motorola B12 are approved for all three. Approval can vary by plan, so confirm the model on your provider's approved list for your speed tier before ordering.
Should I buy a DOCSIS 3.0 modem if it is cheap?
No. Spectrum has announced it will stop supporting DOCSIS 3.0 modems after October 28, 2026, and Xfinity has been removing older DOCSIS 3.0 models from its approved list. A DOCSIS 3.1 modem costs more up front and stays usable for years.
Do these modems have WiFi?
No. The CODA56 and B12 are modems only. Each needs a separate WiFi router or mesh system. If you want one box for both jobs, look at a modem router combo such as the ARRIS DG3450 for Spectrum.
Do these modems work with fiber internet?
No. They work only with cable internet. Fiber services such as AT&T Fiber and Verizon Fios do not use a cable modem, and neither do DSL or satellite services.
Do these modems support home phone service?
No. Neither the CODA56 nor the B12 has a phone jack. If your home phone runs through your cable provider, you need a modem with voice ports that your provider approves.
Is a refurbished modem a good alternative to a Prime Day deal?
Yes. A refurbished modem on your provider's approved list activates the same way a new one does. ModemGuides tests every unit by hand and backs it with a 90-day warranty and 30-day returns, and the price does not depend on a sale calendar.
How do I switch from a rented modem to my own?
Connect the new modem to the coax outlet and power it on, then activate it through your provider's app or website, or by phone. Once it is online, return the rented unit so the rental fee comes off your bill.
What if I miss the Prime Day modem deals?
Black Friday in late November is typically the next large sale period. If you are a Spectrum customer with a DOCSIS 3.0 modem, do not wait for it: the October 28, 2026 cutoff comes first.
As an Amazon Associate I earn from qualifying purchases.
