Astound Broadband (RCN/Grande/Wave) Router Setup Guide
To use your own router with Astound Broadband (formerly RCN, Grande Communications, and Wave Broadband), connect your router's WAN port to your standalone cable modem or bridged gateway. Astound provides standard Dynamic DHCP IPv4 with zero VLAN tagging, but you must register customer-owned modem MAC addresses through the Astound activation portal.
- No VLAN Tagging Needed: Astound Broadband delivers untagged Dynamic DHCP on both DOCSIS cable modems and Calix/Adtran fiber ONTs.
- HFC MAC Registration: When replacing a rented cable gateway with your own DOCSIS 3.1 modem, you must register the HFC MAC address via
astound.com/activate. - Eliminate Rental Fees: Buying an Arris Surfboard S33 or SB8200 eliminates Astound's $15 to $22 per month gateway rental charge.
- Hitron Bridge Mode: If keeping the Astound Hitron CODA-5810 gateway, disable its Wi-Fi radios and toggle operation mode from Gateway to Bridge on LAN Port 1.
Astound Broadband Network Architecture: Cable vs Fiber
Astound Broadband unites regional providers formerly known as RCN (Chicago, New York, Boston, DC, Philadelphia), Grande Communications (Texas), Wave Broadband (Washington, Oregon, California), and enTouch Systems.
Depending on your location, Astound delivers service across two distinct physical mediums:
- Hybrid Fiber-Coaxial (HFC / DOCSIS): The vast majority of Astound customers receive coaxial cable internet. You can use your own DOCSIS 3.1 modem (such as the Arris S33, Arris SB8200, or Netgear CM1000) or bridge Astound's rented gateway.
- Fiber to the Home (FTTH): Newer developments feature direct fiber terminating at a Calix GigaPoint 803G or Adtran ONT. You do not need a cable modem for fiber; an RJ45 Ethernet patch cable runs straight from the ONT into your third-party router's WAN port.
Activating a Customer-Owned DOCSIS 3.1 Cable Modem
Astound charges between $15 and $22 each month to rent their Hitron or Arris gateways. Purchasing your own DOCSIS 3.1 modem pays for itself within 8 to 12 months. Follow this activation workflow:
- Connect Hardware: Connect the coaxial cable from your wall to the coaxial port on your new modem. Connect power and wait for the Downstream, Upstream, and Online LEDs to turn solid green or blue.
- Connect One PC: Connect an Ethernet patch cable between the modem's LAN port and a laptop. Do not connect your router yet.
- Open the Activation Portal: Open a browser and navigate to
https://astound.com/activate(orhttp://install.rcn.com). If the portal does not redirect automatically, call Astound Automated Activation at 1-800-427-8686. - Submit MAC & Serial: Input your 12-character HFC MAC ID and serial number printed on the modem's barcode label.
- Reboot and Connect Router: Once the modem reboots and registers, disconnect your computer, connect the modem to your third-party router's WAN port, and power-cycle both units.
Putting Astound Hitron & Arris Gateways into Bridge Mode
If you prefer to keep Astound's rented gateway (such as the Hitron CODA-5810 or Arris DG3450) but want your own mesh Wi-Fi system to handle all routing without Double NAT:
- Connect a PC to LAN Port 1 on the Astound gateway.
- Navigate to
http://192.168.0.1(orhttp://192.168.100.1). - Log in with username
cusadminand password printed on the gateway sticker (or your primary Wi-Fi password). - Go to Wireless Settings and toggle both 2.4 GHz and 5 GHz Wi-Fi to Disabled.
- Navigate to Basic Setup > Router Mode (or Advanced > System > Operation Mode) and select Bridge Mode (or Pass-Through).
- Click Save Changes. The gateway will reboot. LAN Ports 2, 3, and 4 will shut down. Connect your router's WAN port to LAN Port 1.
Optimizing DNS & Eliminating ISP Redirection
Astound Broadband operates DNS recursive servers that intercept non-existent domain lookup queries (NXDOMAIN) to display sponsored search suggestion landing pages. To achieve faster web browsing and stop query tracking, configure custom upstream DNS in your third-party router:
Recommended DNS Providers: In your router's WAN or LAN DHCP DNS fields, enter 1.1.1.1 and 1.0.0.1 (Cloudflare for ultra-low latency), or 9.9.9.9 (Quad9 for automated malware domain blocking). If using DNS-over-TLS (DoT), configure security.cloudflare-dns.com on port 853.
IPv6 Native Routing: Astound supports native IPv6 across most major metro areas. Select Native IPv6 or DHCPv6 with Prefix Delegation enabled in your router to assign unique public IPv6 addresses to your local devices.
Astound Broadband Hardware Compatibility Reference
| Device Model | Network Technology | Supported Speeds | Ownership Type | Activation / Bridge Mode Method |
|---|---|---|---|---|
| Arris SURFboard S33 | DOCSIS 3.1 Cable | Up to 2.5 Gbps | Customer-Owned | Online Activation at astound.com/activate |
| Arris SURFboard SB8200 | DOCSIS 3.1 Cable | Up to 1 Gbps | Customer-Owned | Online Activation at astound.com/activate |
| Hitron CODA-5810 | DOCSIS 3.1 Gateway | Up to 1.5 Gbps | Astound Rental | Enable Bridge Mode on LAN Port 1 at 192.168.0.1 |
| Calix GigaPoint 803G | Pure GPON / FTTH | Up to 1 Gbps | Astound Optical Demarc | Direct Cat6 to Router WAN (Untagged DHCP) |
| eero 6+ / Pro 6E | Astound Mesh Gateway | Gigabit Wi-Fi 6 | Astound Rental | Unplug completely to eliminate rental fees |
Astound Broadband Own Hardware Setup Checklist
- Select a DOCSIS 3.1 modem approved for Astound (Arris S33 or SB8200) to avoid rental fees.
- Note your modem's 12-character HFC MAC ID and serial number from the barcode sticker.
- Connect coaxial cable and verify solid green or blue downstream/upstream signal lights.
- Complete activation online at astound.com/activate or call 1-800-427-8686.
- If bridging an Astound Hitron gateway, disable 2.4/5GHz Wi-Fi and toggle to Bridge Mode.
- Power-cycle both modem and third-party router and verify public IPv4 WAN lease.
Frequently Asked Questions
Can I use my own router and modem with Astound Broadband?
Yes. Astound allows customers to bring their own DOCSIS 3.1 cable modem and any third-party Wi-Fi router. Using your own equipment eliminates the $15 to $22 monthly modem rental fee from your bill.
What DOCSIS modem is best for Astound Broadband gigabit?
The Arris SURFboard S33 (featuring a 2.5GbE Ethernet port) is the top-rated modem for Astound 1 Gig and 1.5 Gig tiers. For standard gigabit plans, the dual-port Arris SB8200 is also fully certified.
Does Astound Broadband use VLAN tagging on fiber?
No. Astound Broadband FTTH fiber connections use standard untagged Dynamic DHCP on the Calix or Adtran optical terminal. Simply plug your router WAN port into the ONT with a Cat6 patch cable.
How do I access modem diagnostic signal levels on Astound?
Open a browser and navigate to 192.168.100.1. This diagnostic address works on almost all customer-owned cable modems and bridged gateways to view downstream SNR (target >33 dB) and upstream power levels (target 40-49 dBmV).
Related Router Setup & Engineering Guides
- MoCA 2.5 Setup Guide: 2.5 Gbps Ethernet Over Coax — Set up MoCA 2.5 Ethernet over coax for 2.5 Gbps backhaul. Install a 1675 MHz splitter, place a $7 PoE filter at the ISP entry, and prevent DOCSIS overlap.
- Breezeline Gateway Bridge Mode & Own Router Setup Guide — Enable bridge mode on Breezeline gateways (Hitron, Arris, Technicolor). Connect your own router, eliminate Double NAT, and disable Breezeline WiFi.
- How to Set Up a Router — Set up a home or small office router from scratch: connect WAN/ONT cables, release ISP DHCP leases, configure WPA2/WPA3 WiFi, and harden admin access.
- DNS Settings on a Router — Configure router DNS settings using Cloudflare 1.1.1.1, Quad9 9.9.9.9, or Google 8.8.8.8. Understand WAN vs DHCP LAN DNS, DoH/DoT encryption, and DNS leaks.