Global Internet Reliability Leaderboard & Outage Reports
Empirical 90-day availability rankings, Mean Time to Recovery (MTTR), and downtime analytics across Cloud Infrastructure, Telecom Carriers, Streaming Services, and Gaming Platforms.
📑 Published Outage Intelligence Digests
Quarterly Research SeriesDeep-dive analysis of cloud and ISP outages, BGP route leaks, and MTTR trends across Tier-1 providers.
Read Full Q4 Report →Analysis of summer heatwave power grid strains, streaming network performance, and DNS resiliency benchmarks.
Read Full Q3 Report →🏆 90-Day Multi-Industry Reliability Leaderboard
Ranked by 90-day availability percentage, Mean Time to Recovery (MTTR), and total downtime minutes.
| Rank | Platform & Provider | Sector | 90d Uptime | 90d Downtime | MTTR | Grade | Live Status |
|---|---|---|---|---|---|---|---|
| #1 |
Verizon Fios & 5G Home
|
Broadband & Telecom | 99.91% | 117 mins | 44 mins | A- | 🟢 Operational |
| #2 |
AT&T Fiber & Broadband
|
Broadband & Telecom | 99.89% | 143 mins | 52 mins | A- | 🟢 Operational |
| #3 |
Bharti Airtel Broadband
|
Broadband & Telecom | 99.86% | 182 mins | 54 mins | A- | 🟢 Operational |
| #4 |
Reliance Jio Fiber & 5G
|
Broadband & Telecom | 99.84% | 208 mins | 58 mins | B+ | 🟢 Operational |
| #5 |
Comcast Xfinity Internet
|
Broadband & Telecom | 99.82% | 234 mins | 64 mins | B+ | 🔴 Disrupted |
| #6 |
Charter Spectrum Broadband
|
Broadband & Telecom | 99.80% | 260 mins | 72 mins | B+ | 🔴 Disrupted |
| #7 |
SpaceX Starlink Satellite
|
Broadband & Telecom | 99.78% | 286 mins | 38 mins | B+ | 🟢 Operational |
Frequently Asked Questions about Outage Diagnostics & Reliability
Which cloud provider has the highest uptime on the reliability leaderboard?
Amazon Web Services (AWS) and Cloudflare consistently rank in the Tier-1 Elite bracket with over 99.95% observed multi-region availability and an average Mean Time to Recovery (MTTR) under 32 minutes.
How does IsDownNow calculate Mean Time to Recovery (MTTR)?
Mean Time to Recovery is calculated by measuring the elapsed time between initial multi-vector anomaly detection (elevated user reports, search volume surge, or official API incident) and the return to nominal baseline score (< 20/100).
What is the difference between 99.9% and 99.99% availability?
A 99.9% uptime SLA allows up to 43 minutes and 49 seconds of downtime per month (8 hours 45 minutes per year). A 99.99% "four nines" SLA permits only 4 minutes and 23 seconds of downtime per month (52 minutes per year).
How often are the reliability leaderboard rankings updated?
Rankings are re-indexed continuously with a 5-minute rolling diagnostic index, incorporating real-time data from distributed monitoring nodes across 320+ monitored services.