curl my headers
One curl call returns structured JSON with your IPs, headers, and connection scheme for quick debugging.
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 |
Grab headers from the CLI
Use the API endpoint to see exactly what your client transmits, including user agent, languages, and forwarded values.
- curl -H "Accept: application/json" http://nossl.sh/api/request-info
- Includes IPv4, IPv6 when available, and scheme info.
- Sorted headers make diffs easy when comparing runs.
Ideal for proxy and VPN checks
Run the command before and after toggling VPNs or split tunnel configs to see how headers change.
- No caching—every call is fresh.
- Use jq to script assertions against specific headers.
- Plain HTTP keeps the request usable on captive portals.
Can I get plain text instead?
Yes. curl http://nossl.sh returns just the IPv4 address, and curl http://v6.nossl.sh returns IPv6 when present.
Does the JSON include geo?
When available, the API returns basic geo hints like country and organization alongside your headers.
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