Free website status checker — check if any site is up or down in seconds. See HTTP status codes, response times, redirects, and page titles. No signup required.
The 10 websites our visitors check most often. Click any domain to see its latest status.
criticalhit.com.au was checked by WebsiteStatus on October 19, 2026 at 9:40 PM. The server responded with HTTP status code 403 and a response time of 756 ms. The current status is: Client error. You can re-check this site at any time by clicking the "Re-check now" button above, or check another website from the home page.
The HTTP status code tells you how the server responded. 200 means the page loaded successfully. 301 or 302 means the page redirected to a new URL. 404 means the page was not found. 500 indicates a server-side error. WebsiteStatus displays the exact code returned so you can diagnose the issue.
Status codes in the 200-299 range indicate success. 200 OK is the most common and means the page loaded normally. 201 means a resource was created (common in API responses). 204 means the server processed the request but returned no content. WebsiteStatus reports any 2xx or 3xx code as "Up & running."
A 404 status code means "Not Found." The server is running and responding, but the specific page or resource you requested does not exist at that URL. This often happens when a page has been deleted, moved without a redirect, or when the URL was typed incorrectly. It does not mean the entire website is down.
If a site returns a successful status code but has a high response time (over 1-2 seconds), it may be experiencing heavy load, slow database queries, or network congestion. While the site is technically "up," a slow response can frustrate visitors and hurt search rankings. Use WebsiteStatus's response time metric to track performance trends.
Yes, you can check any subdomain. Just type the full address including the subdomain (for example, blog.example.com). WebsiteStatus will resolve the DNS and check whether that specific subdomain is up and responding. Each subdomain gets its own results page.
A CDN (Content Delivery Network) serves your website from multiple geographic locations to improve speed and reliability. If your site uses a CDN, WebsiteStatus may reach a different edge server on each check, which can result in slightly different response times. A CDN generally improves uptime but can mask origin server issues.