---
title: "DNS Uptime & Reliability"
description: "30-day and 90-day uptime rankings for the largest DNS providers. Independent measurement, no provider affiliation."
url: https://uptimeproject.org/category/dns/
built: 2026-11-06T12:58:15.145Z
---

# DNS Reliability Rankings

All 5 DNS providers ranked by 30-day availability. Independent measurement, no provider affiliation. Refreshed on every page load.

DNS services ranked by 30-day availability
| Rank | Provider | Status | 7d | 30d availability | 30d downtime | 90d |
| --- | --- | --- | --- | --- | --- | --- |
| Tied for 1 | [AWS Route 53](https://uptimeproject.org/service/aws-route53/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Cloudflare DNS (1.1.1.1)](https://uptimeproject.org/service/cloudflare-dns/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Google Cloud DNS](https://uptimeproject.org/service/google-cloud-dns/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| Tied for 1 | [Google Public DNS (8.8.8.8)](https://uptimeproject.org/service/google-public-dns/) | Operational | 100.00% | 100.00% | 0 min | 100.00% |
| #5 | [Quad9](https://uptimeproject.org/service/quad9/) | Operational | 100.00% | 99.97% | 10 min | 99.97% |

## What does this measure?

Independent probes in five locations measure each service at per-check cadences: HTTP every minute, DNS every five minutes, TLS once an hour, storage every five to ten minutes. A minute is "up" only when a strict majority of reporting probes vote up; minutes with fewer than three reporting probes are excluded from the denominator. The 30-day availability above is the share of measured minutes flagged "up". Read the [full methodology](https://uptimeproject.org/methodology/) .