When to Use an Is-It-Down Check - Real Use Cases
A 10-second look at the Is It Down checker settles the web's oldest reflex question: is the site down, or is it just me? The check runs from your own device - one direct browser request to the site, no third-party service - and these are the moments it pays off.
A social platform seems dead
When Instagram, Facebook or X stops loading, the seven popular-site cards at the top of the checker answer at a glance - each card resolves to Reachable with a response time or an honest not-reachable note the moment the page loads, no typing needed. If the platform's card is Reachable from your device, the outage headline you saw may not be your problem at all - your session or app is the next suspect.
Only one site fails while everything else works
Type the address and press Check. Not reachable is genuinely ambiguous - the site may be down, or your network, DNS or an ad-blocker blocks it, or the site refuses cross-site checks - so the card names all three causes. The decisive move is a second network: if the site loads on phone data but not on Wi-Fi, your network was the blocker all along.
The site is "up" but your page still errors
A Reachable result with a response time proves the server answered your device at network level. If checkout, login or one specific page still fails, the fault is past the front door - a feature, a session or your account. Hard-refresh, clear the site's cookies, or try a private window before touching your router.
Where this check stops
This is an is-it-down-for-ME check: one vantage point, your device. It cannot see HTTP status codes or page content (the browser's cross-site probe is opaque), keeps no outage history, and never claims a site is down for everyone. When you need crowd-scale confirmation, pair it with an outage-report site - the comparison guide shows what each source can and cannot tell you.
For the exact clicks, see the step-by-step walkthrough.
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