Question
What DNS Servers are recommended when setting up 8x8 services?
Applies To
DNS
Networking
Answer
It is best practice to first set up the DNS with the DNS from your Internet Service Provider (ISP). However, if issues still arise you can set the 8x8 GTM on the phones. Below is a list of DNS servers for multiple common ISPs. It is not recommended to use Google DNS or OpenDNS as this will likely cause geo-routing issues. You may see mixed results with Cloudflare DNS.
Note:
If you are setting up custom DNS on the phone, you have to set static IP first. See Set a Static IP on a Poly Phone.
ISP DNS List
Comcast DNS
75.75.75.75
75.75.76.76
Time Warner DNS
209.18.47.61
209.18.47.62
Brighthouse DNS
65.32.1.65
65.32.1.70
ATT DNS
Primary DNS: 68.94.156.1
Secondary DNS: 68.94.157.1
Century Link DNS
Primary DNS: 205.171.3.65
Secondary DNS: 205.171.2.65
COX DNS
Primary DNS: 68.105.28.16
East Coast DNS: 68.105.29.16
West Coast DNS: 68.111.106.68
Sudden Link DNS
Primary DNS: 208.180.42.100
Secondary DNS: 66.76.175.100
Frontier DNS
Primary DNS: 74.40.74.40
Secondary DNS: 74.40.74.41
8x8 GTM
8.28.0.9
192.84.18.11
Note:
8x8 GTM should only be used if continued failures are experienced with the ISP DNS. Do not set 8x8 GTM servers as the DNS for your LAN. This will cause your computers to lose internet connectivity.