Check another site
stackoverflow.com
https://stackoverflow.com/questions
Up
stackoverflow.com is up and reachable.
Visit siteChecked
HTTP status
403
Forbidden
Response time
6 ms
Fast
SSL certificate
—
Checking…
Server IP
198.252.206.1
1 record
Diagnostics
- Final URL
- https://stackoverflow.com/questions
- Server
- cloudflare
- Content type
- text/html; charset=UTF-8
- HSTS
- Not set
Redirect chain
- 302https://stackoverflow.com/
- 403https://stackoverflow.com/questions
DNS records
A 198.252.206.1
Still having trouble?
We can reach stackoverflow.com, so if you can't, it's likely one of these.
Hard-refresh and clear your cache
Force a fresh copy with Ctrl + Shift +R (Cmd + Shift +R on Mac). If the page still won't load, clear your browser's cache and cookies for stackoverflow.com, then try again.
Flush your DNS cache
- Windows:
ipconfig /flushdns - macOS:
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder - Linux:
sudo resolvectl flush-caches
Switching to a public resolver like Cloudflare (1.1.1.1) or Google (8.8.8.8) can also help.
Try a different network or device
Switch from Wi-Fi to mobile data (or vice-versa), or open the site on your phone. If it loads elsewhere, the problem is local to your network — not stackoverflow.com.
Disable VPN, proxy and extensions
Ad-blockers, VPNs and some browser extensions can block requests. Turn them off, or open stackoverflow.com in a private/incognito window to test with a clean profile.