Check if a website is down. Monitor availability and response time.
Perform advanced global availability checks (Check-Host style) from multiple locations instantly.
A website that is not responding is not just an inconvenience. For businesses, every minute of unplanned downtime translates directly into lost revenue, damaged reputation, and frustrated users who may not return. Uptime monitoring exists to make sure you know about problems before your users do.
Uptime monitoring is the practice of regularly checking whether a website or online service is accessible and responding correctly. An uptime monitoring tool sends periodic requests to a target URL and records whether a successful response was received. If the site fails to respond — or returns an error — an alert is triggered.
The simplicity of the concept belies its importance. Without monitoring, a site can be down for hours before anyone notices. With monitoring, you are notified within minutes.
Downtime can originate from many different sources. Server hardware failures, software crashes, network outages, misconfigurations after a deployment, DDoS attacks, expired SSL certificates, and even DNS propagation issues can all take a site offline.
Not all downtime looks the same. Some outages are total — the site returns no response at all. Others are partial, where the server responds but with an error code like 500 or 503. A good uptime monitoring tool distinguishes between these scenarios and reports them accurately.
Uptime is binary — a site is either up or down. But performance exists on a spectrum. A site that technically responds but takes eight seconds to load is delivering a poor experience that affects bounce rates, conversions, and search rankings.
Tracking response time alongside availability gives you a complete picture of how your site is performing, not just whether it is reachable.
XFox.Net lets you check the current status and response time of any domain instantly. Enter a URL and see whether the target is online, how quickly it is responding, and what HTTP status code it is returning.
For any website owner, developer, or business that depends on online availability, keeping an eye on uptime is not optional — it is essential.
Simple, reliable tools for domain analysis and management.
View ownership details, registration dates, and contact information for any domain name.
Search WHOISCheck DNS records including A, MX, CNAME, and TXT records to verify configuration.
Check DNSMonitor website availability, response time, and server status in real-time.
Monitor UptimeTrack domain registration, expiration, DNS changes, and other important events.
Track EventsCheck your website's position in Google search results for specific keywords instantly.
Check Rank