Astound Broadband (RCN/Wave/Grande): can you use your own modem?

Checked against Astound Broadband's own policy on 2026-08-25 — Astound Broadband's own page. Not paid by Astound Broadband (RCN/Wave/Grande) or any ISP — we track 37 ISPs and 27 named models (how we verify). Amazon links are affiliate.

Which modems does Astound Broadband (RCN/Wave/Grande) approve?

Astound Broadband (RCN/Wave/Grande) names these models on its own page. They are the exact make and model strings published there as of 2026-08-25 — a sample of the list, not necessarily all of it.

Amazon product/search links · affiliate — we may earn a commission from qualifying purchases, at no extra cost to you.

• Motorola MT8733Named on Astound Broadband's list. Buy links are on the models below.DOCSIS 3.1 · Up to 2.5 Gbps · Wi-Fi 6 built-inBest for: Gigabit+ plans, future-proof
• Motorola MG8725Exact model matched in Amazon's catalog 2026-09-11.DOCSIS 3.1 · Wi-Fi 6 built-in
  See price on Amazon →
• Motorola MB8611Named on Astound Broadband's list. Buy links are on the other models in this list.DOCSIS 3.1 · Up to 2.5 GbpsBest for: Gigabit+ plans, future-proofAlso named byBreezeline
• Arris G36Exact model matched in Amazon's catalog 2026-09-11.DOCSIS 3.1 · Wi-Fi 6 built-inAlso named bySpectrum
  See price on Amazon →
• Arris S33Our pickExact model matched in Amazon's catalog 2026-09-11.DOCSIS 3.1 · Up to 2.5 GbpsBest for: Gigabit+ plans, future-proofAlso named bySparklightSpectrum
  See price on Amazon →
• Netgear Nighthawk CM 3000Exact model matched in Amazon's catalog 2026-09-11.DOCSIS 3.1
  See price on Amazon →

1. Your modemyou buy it, or you rent it
2. Your ISP's networkthey decide what connects
3. The internetthe part you actually want

Can I use my own modem with Astound Broadband (RCN/Wave/Grande)?

Yes, with a restriction: the device has to appear on Astound Broadband's published approved list. Page states "You can’t use your own modem if: You use Astound Digital Phone and don’t have an EMTA. You live in an area with fiber-to-the-home or Ethernet-delivered internet—Astound equipment is required." Digital Phone customers otherwise can bring their own modem: "You can still use your own modem! But you’ll need to keep an Astound EMTA device to use the phone service." See the modems Astound Broadband approves.

How do I activate my own modem on Astound?

Astound publishes four steps: buy a compatible modem, connect it to your coax, call 1.800.427.8686 with the modem's MAC address, then return your Astound equipment to avoid rental fees.

Can I keep Astound phone service with my own modem?

Partly. Astound states you will need to keep an Astound EMTA device to use the phone service, even if you supply your own modem for internet.

Are any modems known not to work on Astound?

Yes. Astound states the Motorola MB8600 has known issues connecting to its network. For its 5 Gig by 1 Gig tier, Astound says you must use its modem and eero Max 7, as no retail modem yet supports that speed.

How do I return the Astound modem?

Return it at a local office — call 1.800.427.8686 first to confirm they accept equipment — or use Astound's prepaid FedEx label. Return it on or before your scheduled disconnect date, or replacement charges may apply.

What DOCSIS version does Astound Broadband (RCN/Wave/Grande) require?

"Look for a modem that supports DOCSIS 3.1. It’s the latest technology that helps your internet go faster. If your modem says DOCSIS 3.0, it won’t be able to keep up with Astound’s higher speeds." Compare the DOCSIS version all 37 providers name.

What should I watch out for with Astound Broadband (RCN/Wave/Grande)?

Phone: "You can still use your own modem! But you'll need to keep an Astound EMTA device to use the phone service." Known-bad modem: "The Motorola MB8600 has known issues connecting to Astound's network." Fiber upgrade: for fiber upgrade zones Astound states "you'll need a Netgear Nighthawk CM3000 modem." Top tier: for the 5G x 1G tier, "you'll need to use Astound's modem and eero Max 7" — Astound notes no retail modem yet supports that speed.

Do Astound Broadband's requirements change with my speed tier?

"For speeds above 1000 Mbps, we recommend a DOCSIS 3.1 modem with a 2.5GE port—this lets more speed flow through." Also: "Special areas: Fiber Network Upgrade Zones (currently the Lehigh Valley, PA) — If you live in a fiber network upgrade area, you’ll need a Netgear Nighthawk CM3000 modem. It supports speeds up to 2G download and 500 Mbps upload." And: "If you have the 5G x 1G tier, you’ll need to use Astound’s modem and eero Max 7—there’s no retail modem available yet that supports this speed." See the modems Astound Broadband approves.

Can I use my own router with Astound Broadband (RCN/Wave/Grande)?

Permitted — the table's "Type" column marks Motorola MT8733, Motorola MG8725 and Arris G36 as "Modem + WiFi" (WiFi 6). Motorola MB8611 and Arris S33 are listed "Modem only" / "No WiFi".

What does Astound Broadband (RCN/Wave/Grande) not allow?

"Note: The Motorola MB8600 has known issues connecting to Astound’s network. Also, EURODOCSIS modems won’t work in the U.S." Plus the two BYOM restrictions: Astound Digital Phone without an EMTA, and fiber-to-the-home / Ethernet-delivered areas (Astound equipment required). Also the 5G x 1G tier (Astound modem + eero Max 7 required). Compare Blue Ridge Communications's rules.

Two boxes

1. Modemtalks to the ISP line
2. Routermakes the Wi-Fi

One box — a “gateway”

1. Modem + routerone unit does both jobs

Where does this information come from?

Every statement on this page is quoted from Astound Broadband's own published pages:

• https://www.astound.com/support/internet/bring-your-own-modem/
• https://www.astound.com/internet/equipment/
• https://www.astound.com/support/internet/equipment-return/

Last verified 2026-08-25. Approved lists and equipment policies change without notice — re-check the source above before you buy.

Other providers to compare

Other cable providers:Blue Ridge CommunicationsBreezelineBuckeye BroadbandComporiumGCI

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