Your go-to nossl page
One lightweight destination that always responds over HTTP and documents what the network sees.
Live snapshot
Connection report
IP address
IPv6 address
IPv6 address
🇺🇸 United States
Headers
Request headers
8 headers
| Header | Value |
|---|---|
| accept | */* |
| accept-encoding | gzip, br, zstd, deflate |
| cache-control | max-age=259200 |
| connection | close |
| host | nossl.sh |
| user-agent | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) |
| via | 1.1 squid-proxy-5b5d847c96-788gb (squid/6.13) |
| x-forwarded-for | 216.73.216.63 |
Share with your traveling team
Sales and field engineers can rely on a consistent URL for every trip. The counters prove uptime and reliability to wary venue admins.
Integrate into monitoring flows
Use the JSON API to alert you when HTTP access fails, indicating that a firewall update might be blocking captive portal triggers.
Do I need to clear cache between visits?
The page sends cache-control headers instructing browsers not to cache, ensuring every refresh reflects a new handshake.
Can I embed the nossl page inside documentation?
Yes. Link directly to the page or iframe it inside an internal wiki to guide teammates through captive login checks.
Quick steps to trigger captive portals
Apple captive portal check
Open the official Apple CNA page to force the captive assistant on iOS and macOS devices.
Open Apple captive portalAndroid captive portal check
Use the Android connectivity check URL that devices call before presenting the portal dialog.
Open Android captive portal