---
title: "Recommended DNS Servers for 8x8 Service"
slug: "recommended-dns-servers-for-8x8-service"
updated: 2026-05-11T09:14:56Z
published: 2026-05-21T21:28:00Z
canonical: "help.8x8.com/recommended-dns-servers-for-8x8-service"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.8x8.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Recommended DNS Servers for 8x8 Service

## 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]
> 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](/support/docs/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]
> 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.