Mobile Wi-Fi diagnostics
Ideal for iOS, Android, and ChromeOS when the network refuses to show a login screen.
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 |
Quick tips for phones and tablets
Disable private relay or VPN apps temporarily, then load nossl.sh to nudge the captive network into presenting its challenge.
If the portal still will not load, capture the headers and share them with your mobile carrier or venue support.
Useful mobile-only checks
Use the copy buttons to paste details into chat apps while you stay on the captive network.
- Compare IPv4 vs IPv6 presentation.
- Confirm language headers match the splash page you expect.
- Measure response time using the inline latency tool.
Does nossl.sh work inside in-app browsers?
Yes. The markup is lightweight and loads even when the captive portal opens inside a restricted web view.
What if my device blocks HTTP entirely?
Some enterprise configurations force HTTPS. In that case, ask your administrator to temporarily allow nossl.sh over HTTP so onboarding can complete.
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