Question 1

What is IsSiteDown.co?

Accepted Answer

IsSiteDown.co is a free utility that checks if a website is down for everyone or just you. It helps determine whether connection issues are on your end or if the website itself is experiencing problems.

Question 2

How does IsSiteDown.co work?

Accepted Answer

Our service works by sending requests to the website from our servers. If our servers can access the website but you can't, the problem is likely on your end. If our servers can't access it either, the website is probably down for everyone.

Question 3

Is IsSiteDown.co free to use?

Accepted Answer

Yes, IsSiteDown.co is completely free to use with no limitations. We generate revenue through minimal, non-intrusive advertising to cover our operating costs.

Question 4

How accurate are your results?

Accepted Answer

Our service uses multiple checking methods and fallback strategies to provide highly reliable results with approximately 99.7% accuracy. However, the complex nature of the internet means no service can be 100% accurate in all scenarios, especially for sites with strict security measures.

Question 5

Do you track which websites I check?

Accepted Answer

We collect aggregated, anonymous data about which websites are checked to improve our service. We do not associate this data with individual users or track your browsing habits. For more information, please see our Privacy Policy.

Question 6

Why can I still access a site that you say is down?

Accepted Answer

Some outages are regional or affect only certain network paths. You might be able to access a site that's down for many other users due to your specific location, internet service provider, or cached content in your browser.

Question 7

Why can't I access a site that you say is up?

Accepted Answer

You may be experiencing local connectivity issues, firewall restrictions, or DNS problems. Try these troubleshooting steps: Clear your browser cache and cookies, use a different browser or device, connect through a different network (try mobile data), restart your router or modem, check if your ISP is blocking the site, or try using a VPN if regional restrictions may apply.

Question 8

What should I do if a site is down only for me?

Accepted Answer

If a site is accessible to our servers but not to you, try these steps: Refresh the page (Ctrl+F5 or Cmd+Shift+R for a hard refresh), check your internet connection with other websites, flush your DNS cache (instructions vary by operating system), try a different DNS server (such as Google's 8.8.8.8 or Cloudflare's 1.1.1.1), and contact your internet service provider if the problem persists.

Question 9

Why am I seeing different results when checking the same site multiple times?

Accepted Answer

Website availability can fluctuate, especially during partial outages or when a site is experiencing heavy traffic. Some sites also implement rate limiting or have regional CDN issues that can cause inconsistent results. If you're seeing different results over a short period, the site may be experiencing intermittent problems.

Question 10

How exactly does IsSiteDown.co check website status?

Accepted Answer

Our service uses a multi-step approach to verify website status: We convert brand names to actual domains (e.g., 'facebook' to 'facebook.com'), attempt HTTP requests from multiple global locations, use various user-agent configurations to bypass basic security restrictions, implement progressive fallback methods for reliable results, and analyze response codes, loading times, and error messages.

Question 11

What status codes indicate a website is down?

Accepted Answer

We consider the following HTTP status codes as indicators that a website is experiencing issues: 5xx codes (Server Errors) where the server failed to fulfill a valid request, 408 (Request Timeout) where the server timed out waiting for the request, Connection refused errors when unable to establish a connection to the server, and DNS resolution failures when unable to resolve the domain name. Note that some status codes like 403 (Forbidden) or 429 (Too Many Requests) may indicate that the site is blocking our check rather than being down.

Question 12

Can I check multiple websites at once?

Accepted Answer

Currently, our service only supports checking one website at a time. This allows us to provide the most accurate results for each check. For bulk website monitoring, you might consider dedicated uptime monitoring services.

Question 13

How often is the status information updated?

Accepted Answer

Our status information is checked in real-time when you enter a website. We also cache results for a short period (typically 1-5 minutes depending on the site) to improve performance and reduce server load. For sites experiencing issues, we use shorter cache times to ensure more frequent updates.

Question 14

What are the most common causes of website outages?

Accepted Answer

The most common causes of website outages include: Server overload from too much traffic overwhelming server resources, DNS issues causing problems with domain name resolution, scheduled server maintenance for updates or hardware changes, application errors from bugs or code issues causing crashes, network problems affecting internet backbone or routing, DDoS attacks deliberately flooding servers to cause downtime, and hosting provider issues at the data center level.

Question 15

How long do typical website outages last?

Accepted Answer

The duration of website outages varies greatly depending on the cause: Minor issues typically last minutes to a few hours, server crashes typically last 1-4 hours, DNS problems can last 24-48 hours due to propagation, major outages can last several hours to days in severe cases, and scheduled maintenance is usually announced in advance and lasts 1-4 hours. Major tech companies typically resolve outages faster due to redundant systems and dedicated teams, while smaller websites might take longer to address issues.

Question 16

How can I find out why a specific website is down?

Accepted Answer

To find out why a website is down, you can: Check the company's social media accounts for announcements, visit their status page if they have one (e.g., status.anthropic.com), look for news reports about major outages, check outage reporting sites like DownDetector, or contact the company's customer support.

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