Modems / Astound

Astound, RCN and Wave compatible modems

Astound approves the mainstream DOCSIS 3.1 models, with differences between its regional networks. Buying your own removes the modem rental from the bill.

Confirm your model on Astound's own support pages before buying · Astound support

Rental you avoid
The monthly modem fee
DOCSIS required
3.1 for the top tiers
Worth knowing
Regional lists vary

What we'd buy for Astound

Prices move weekly, so we link out rather than print a figure that will be wrong when you read it.

ARRIS SURFboard S34
Best all-round
ARRIS SURFboard S34
DOCSIS 3.1 · 2.5 GbE · up to 2.32 Gbps

Fast enough for any plan sold today and approved across the major cable networks. The default answer.

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NETGEAR CM3000
Multi-gig
NETGEAR CM3000
DOCSIS 3.1 · 2.5 GbE · up to 2.33 Gbps

The one to buy on a gigabit plan or above. No built-in Wi-Fi, so the radio cannot age before the modem does.

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NETGEAR CM2500
Sub-gigabit
NETGEAR CM2500
DOCSIS 3.1 · 1 GbE · up to 936 Mbps

Cheaper, and nothing wasted if your plan tops out near 500 Mbps.

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NETGEAR CM2050V
With home phone
NETGEAR CM2050V
DOCSIS 3.1 · voice-enabled · up to 2.32 Gbps

Home phone needs a voice-capable modem — a data-only model will not carry the line.

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Every Astound-compatible model, by brand

ARRIS / SURFboard 4 models
ARRIS SURFboard S33
Up to 2.35 Gbps
2.5 GbE port
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ARRIS SURFboard S34
Up to 2.32 Gbps
2.5 GbE port
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ARRIS SURFboard SB8200
Up to 1 Gbps
Dual 1 GbE
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ARRIS T25
Up to 949 Mbps
Voice-enabled
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NETGEAR 4 models
NETGEAR CM3000
Up to 2.33 Gbps
2.5 GbE port
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NETGEAR CM2500
Up to 936 Mbps
1 GbE
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NETGEAR CM2050V
Up to 2.32 Gbps
Voice-enabled
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NETGEAR CM1000
Up to 1 Gbps
1 GbE
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Motorola 3 models
Motorola MB8611
Up to 2.5 Gbps
2.5 GbE port
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Motorola MB8600
Up to 1 Gbps
1 GbE
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Motorola MT8733
Up to 2.33 Gbps
Voice + Wi-Fi 6
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Hitron 1 model
Hitron CODA56
Up to 2.33 Gbps
2.5 GbE port
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Ubiquiti 1 model
Ubiquiti UCI cable modem
Up to 2.33 Gbps
2.5 GbE port
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Astound modems: questions

Is the list the same for RCN, Wave and Grande?

Not necessarily. The brands run on separate networks under one owner, so confirm on the support page for your own market.

Work out what renting is costing you
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Other providers
Spectrum Cox (now Spectrum) Optimum Astound Mediacom Sparklight

Some links earn a commission if you buy, at no cost to you. It never changes which modems appear or how they are ordered. Device lists come from Astound's own pages and change without notice — check before purchasing.