Internet Outage Map: Real-Time Tools and How to Use Them

When the internet goes down, one of the first things people do is try to figure out how widespread the problem is. Is it just your house? Your city? Half the country? An internet outage map shows you the geographic spread of reported issues in real time, helping you understand the scope and severity of an outage.

This guide covers the best outage map tools, how they collect their data, what the maps can and cannot tell you, and how to use them effectively.

What Is an Internet Outage Map?

An internet outage map is a visual tool that plots reported internet and service outages on a geographic map. Reports are shown as colored dots, heat zones, or clusters, with denser concentrations indicating more severe or widespread problems.

Most outage maps are powered by crowdsourced data. Users visit the site, report that their service is down, and the map plots those reports by location. Some maps also pull data from official sources like ISP status pages and network monitoring services.

The value of an outage map is context. Instead of knowing only that "something is wrong," you can see that Comcast is down in the entire Southeast region, or that Verizon has a localized issue in Chicago, or that AWS is affecting services nationwide.

Best Internet Outage Map Tools

Downdetector

Downdetector is the most popular outage tracking platform and includes a heatmap for every service it tracks. When you search for an ISP or service on Downdetector, the outage map shows where reports are concentrated.

How it works: Users submit reports through the website, app, or by searching for a service. Downdetector plots these reports on a map with heat zones indicating concentration. It also shows a time-series graph of report volume so you can see whether the problem is growing or resolving.

Best for: Checking specific ISPs and services. The per-service maps are detailed and updated in near real-time.

Limitations: Data is crowdsourced, so areas with fewer users produce fewer reports even if the outage is just as severe. Urban areas are overrepresented.

Thousandeyes (Internet Outages Map)

ThousandEyes, owned by Cisco, provides a global internet outage map at thousandeyes.com/outages. Unlike crowdsourced tools, ThousandEyes uses active network monitoring from thousands of vantage points worldwide.

How it works: ThousandEyes monitors BGP routing, DNS resolution, and network connectivity from distributed agents. When it detects routing anomalies or connectivity loss, it plots the affected regions on a map.

Best for: Understanding infrastructure-level outages. ThousandEyes catches BGP hijacks, major peering failures, and backbone outages that affect large portions of the internet.

Limitations: Focused on network infrastructure rather than individual service availability. Less useful for checking if a specific app is down.

ISP-Specific Outage Maps

Some ISPs provide their own outage maps:

• Comcast/Xfinity: The Xfinity app and status page show outages at a zip-code level.
• AT&T: The AT&T outage page shows known issues after you enter your address.
• Spectrum: The My Spectrum app shows local outages.

ISP maps use their own internal monitoring data, making them more accurate for that specific ISP than crowdsourced tools. The downside is that ISPs sometimes delay reporting or understate the scope of an issue.

How Outage Maps Collect Data

Crowdsourced Reports

Most public outage maps rely on user reports. When people experience problems, they visit the outage site and click "I have a problem" or simply search for the service (which Downdetector counts as an implicit report).

The strength of crowdsourced data is speed. User reports appear within minutes of an outage starting, often before the ISP or service has acknowledged the problem.

The weakness is accuracy. Reports come from self-selected users who are motivated enough to find and use the reporting tool. Not every affected user reports, and some users report issues that are actually local to their own setup. The data is directionally useful (a spike in reports almost always means a real outage) but not precise.

Active Network Monitoring

Tools like ThousandEyes use synthetic monitoring from distributed agents. These agents perform network tests (pings, traceroutes, DNS lookups, HTTP requests) from hundreds of locations and detect anomalies automatically.

Active monitoring is more accurate and consistent than crowdsourced data, but it requires significant infrastructure to operate and is typically available only from enterprise-grade providers.

ISP Internal Data

ISPs monitor their own networks and can detect outages at the equipment level. When a DSLAM, a fiber node, or a central office has problems, the ISP knows exactly which customers are affected.

ISP data is the most accurate for that specific provider but is not always shared publicly or in real time. Some ISPs are more transparent about outages than others.

How to Read an Outage Map

Report Density

The number and concentration of reports indicate severity. A few scattered reports might be individual issues. A dense cluster in a city means a localized outage. Clusters across an entire state or region indicate a widespread problem.

Time Trends

Most outage maps include a timeline showing report volume over the past 24 hours. The shape of the curve matters:

• Sharp spike followed by decline: An outage occurred and is being resolved.
• Sharp spike that stays elevated: An ongoing outage.
• Gradual increase: Growing problems, possibly related to load or degradation rather than a sudden failure.
• Flat baseline with occasional bumps: Normal noise. Individual users having local issues.

Geographic Patterns

The geographic distribution of reports tells you about the cause:

• Single city or neighborhood: Likely a local infrastructure issue (cut cable, failed equipment at a specific node).
• One region of a country: Possibly a regional backbone or peering point issue.
• Nationwide: Major infrastructure failure or a centralized service outage.
• Global: Rare, but possible for services with centralized architecture (like the Facebook BGP outage in October 2021).

Using Outage Maps Effectively

Confirm Your Suspicion

When your internet goes down, check the outage map for your ISP. If there is a cluster of reports in your area matching the timeframe when your connection dropped, the problem is likely your ISP.

Assess Scope

If you are a business owner and your customers report problems accessing your site, an outage map can help you determine whether the issue is on your end or whether a broader internet problem is affecting connectivity in certain regions.

Track Resolution

Keep the outage map open during an outage and refresh periodically. When the report spike starts declining, the outage is being resolved. New reports dropping to baseline means most users are back online.

Historical Context

Some outage tools keep historical data. Reviewing past outages for your ISP helps you understand how often problems occur and how long they typically take to resolve. This information is useful when evaluating whether to switch providers.

Beyond Maps: Automated Monitoring

Outage maps are reactive. You visit them after you suspect a problem. For proactive awareness, automated monitoring tools alert you the moment an issue is detected.

Is That Down monitors the status pages of popular services and sends alerts when incidents are posted. For the services your business depends on, automated alerts are faster and more reliable than manually checking an outage map. See outage alerts setup for a complete guide.

For a step-by-step troubleshooting approach when you suspect an outage, see the internet outage guide. For localized checks, see internet outage near me.

Key Takeaways

• Internet outage maps visualize reported outages on a geographic map, showing where problems are concentrated.
• Downdetector is the most popular crowdsourced tool. ThousandEyes provides infrastructure-level monitoring. ISPs have their own maps.
• Crowdsourced data is fast but imprecise. Dense report clusters reliably indicate real outages. Sparse reports are harder to interpret.
• Read maps by looking at report density, time trends, and geographic patterns to assess severity and scope.
• For proactive monitoring, use automated alerts from Is That Down rather than manually checking maps.