Spectrum is Charter Communications plus the former Time Warner Cable and Bright House networks, so which DNS servers you get depends on your region. We confirmed that 71.10.216.1 and .2 resolve to rns01 and rns02.charter.com, and 209.18.47.61 and .62 to dns-cac-lb-01 and -02.charter.com in Charter's TWC network (AS7843), on 24 October 2026. Spectrum doesn't publish an official list, and your router receives the right ones automatically. Check yours with the What is my DNS server tool. Standard residential service comes with a public, dynamic IPv4 address; IPv6 is available in most areas.
Facts
- Brands
- Spectrum, Charter, formerly Time Warner Cable, formerly Bright House
- CGNAT
- No
- IPv6
- Yes
- ASNs
- AS20115, AS7843, AS11426, AS10796
DNS servers
71.10.216.1 71.10.216.2 209.18.47.61 209.18.47.62
Frequently asked questions
What are Spectrum's DNS servers?
Commonly 71.10.216.1 and 71.10.216.2, and 209.18.47.61 and 209.18.47.62 in former Time Warner Cable areas. Your router gets the right ones automatically.
Does Spectrum use CGNAT?
Standard Spectrum home internet gives you a public IPv4 address, not carrier-grade NAT, so port forwarding works. Check your router's WAN address: an address in 100.64.0.0/10 would mean CGNAT.
Does Spectrum support IPv6?
Yes, in most areas. Your router needs to request an IPv6 prefix (DHCPv6-PD); Spectrum-supplied routers do this automatically.