Website uptime
checker
Check whether a website is up or down. See its response time and HTTP status in seconds.
Recent website checks
0Shared availability results, automatically aged out after 24 hours
Understand an uptime check
Site Up Or Down is a free website availability checker for public HTTP and HTTPS addresses. Each on-demand test reports whether the server responded, its HTTP status code, and response time.
What does “up” or “down” mean?
A response below HTTP 500 means the website answered. A 4xx status can mean the server is up but the requested page is unavailable or restricted. A 5xx status or no response may indicate an outage.
Can a website be down only for me?
Yes. DNS, routing, firewalls, and regional network conditions can vary. This website status test runs from one network location, so results may differ from your own connection.
Is this continuous uptime monitoring?
No. Checks run only when requested; there is no background polling or alerting. Recent website check results are shared and kept for up to 24 hours.