Server Issues
Your hosting server may become overloaded, crash, or run out of resources, causing your website to become unreachable. Shared hosting environments are especially susceptible during traffic spikes.
Instant Check · Real-Time Results
Check Website Uptime Instantly
Use our uptime checker to instantly verify if your website is online or experiencing downtime. Get real-time availability results in seconds.
Check Uptime Now →What is an Uptime Checker?
An uptime checker is a tool that monitors whether your website is accessible and functioning correctly. It sends requests to your website at regular intervals and reports the response status so you always know if your site is online.
Definition: An uptime checker verifies website availability by sending HTTP requests and checking server responses. If the website returns an error or doesn't respond, the site is considered "down."
Why Check Website Uptime?
Regular uptime checking ensures your website stays accessible to visitors, search engines, and customers. Even brief periods of downtime can have serious consequences for your business.
Ensure Availability
Confirm your website is reachable to all visitors at all times.
Avoid Lost Traffic
Prevent search engine crawlers from encountering errors on your site.
Improve Reliability
Build user trust with consistently high uptime performance metrics.
How to Use Our Uptime Checker
Three simple steps to instantly check your website uptime.
1
Enter Your Domain
Type or paste your website URL into the uptime checker tool.
2
Run the Check
Xhylo Pulse instantly sends a request to your website and measures the response.
3
View Results Instantly
See whether your site is online, the response time, and HTTP status code.
Common Causes of Website Downtime
Understanding why your website goes down helps you prevent future outages. Here are the most common causes:
Hosting Failures
Data center outages, hardware failures, or network disruptions at your hosting provider can take your entire website offline, often without warning.
DNS Problems
Incorrect DNS configuration, expired domain registrations, or DNS propagation issues can make your website unreachable despite your server running fine.
Code Errors
Faulty code deployments, plugin conflicts, or CMS updates can break your website's functionality and cause error pages or white screens.
Pro Tip: The fastest way to detect and respond to any of these causes is to have an automated uptime checker running continuously. Xhylo Pulse monitors your website 24/7 and alerts you the moment any downtime is detected.
Read the full Website Downtime Guide →Never Miss Downtime Again
Go beyond manual checking. Let Xhylo Pulse monitor your website automatically and alert you instantly when issues occur.
Uptime Checker FAQ
Answers to common questions about checking website uptime.
How do I know if my website is down?
You can use an uptime checker tool like Xhylo Pulse to verify your website's availability instantly. Simply enter your domain URL and the tool will check if the site is accessible, returning the HTTP response code and load time in real time.
What is a good uptime percentage?
A good uptime target is 99.9% or higher, which means your website can only experience about 8.7 hours of downtime per year. Mission-critical websites often target 99.99% uptime (less than 52 minutes of downtime per year).
Is the uptime checker completely free?
Yes. Xhylo Pulse offers a free uptime checker that you can use instantly without creating an account. For continuous automated monitoring and alert notifications, you can sign up for a free account.