host.tools

HTTP headers

HTTP /api/v1/http/headers

Capture every response header, follow redirects, time each hop.

Try: https://host.com https://checkhost.com https://hostinfo.com https://crypt.tools
Related: HTTP headers Security headers grader Redirect chain tracer SSL certificate inspector robots.txt parser sitemap.xml inspector
https://imtokencn.dtjyn.com/appdetail/im 200 2 hops 1573 ms
Redirect chain
  1. 302 https://imtki.app 580 ms
  2. 200 https://imtokencn.dtjyn.com/appdetail/im 755 ms
Final response headers (11)
server nginx
content-type text/html; charset=UTF-8
vary Accept-Encoding
pragma no-cache
expires -1
set-cookie XSRF-TOKEN=eyJpdiI6ImJ3bERVUWJ0UUNocWVCOS9kMXFJdXc9PSIsInZhbHVlIjoiTllkQUt4ZjBVd0w1dXYrL2ZQNjF3Y3Fva3VNY3VrS1BKTkE5SnRaek5IZXcwUmpnbm9LV25idVp5elZKLzlQWUVXZks5d2p3T3J3c0l4dEhJbGp6Z0QzT0V3eEtZdW1mQzhNNHZpZHQ5L0hYUWM0dlc1TFdvNkx5V084eHFsWUoiLCJtYWMiOiJjNTExZWI5OWQ4NzI3Zjk4Yzg2ZWM1MzE1MDI2NTM0MzA2YjFhZGQwZmI2YTQwZDBmNjI5Y2JlODYwMjk1N2U4IiwidGFnIjoiIn0%3D; expires=Sat, 09 May 2026 11:52:42 GMT; Max-Age=7200; path=/; samesite=lax, laravel_session=eyJpdiI6IjltMnhLMk1CSjBSa05ub3JCWkNHRkE9PSIsInZhbHVlIjoiNmIxckhXSStGeG1iU0l3NHJkWGgyZVN3MGZLYVJ0UlU5dXBYOCtoUW50YXJ3aTF2RUt4Z1dEWjhvbmdNcjBoOE1wUERIbVNVVUVYdG40bG1KaTV3T1VUSmh1YlAveVNCbHdYdTZFNGVSbVp3ODBGMDhTak5tWVQwSnlFN0xGMXkiLCJtYWMiOiI5MWVkNzhiYjgxMmU2NDlmNTc1YTJlMTk4NWJiNjAyYTUwYzllOWY4M2RkOWRlNTA4M2IxOGZiMDQwYTU0YmFiIiwidGFnIjoiIn0%3D; expires=Sat, 09 May 2026 11:52:42 GMT; Max-Age=7200; path=/; httponly; samesite=lax
content-encoding gzip
cache-control private, must-revalidate
date Sat, 09 May 2026 09:52:41 GMT
eo-log-uuid 1761737456567730074
eo-cache-status MISS
Tech stack
NginxNext.js
Sponsored host.tools Pro
Bulk lookups · monitors · webhooks · 10,000 API calls/day

Upgrade to Pro for $19/mo. Cancel anytime. Works with the same API you already use.
How to use HTTP headers
  1. 1
    Paste your input

    Enter the value at the top — domain, IP, URL, email, ASN, hash, whatever fits this tool. The smart input auto-detects type.

  2. 2
    Click "Inspect"

    host.tools issues real probes (DNS, HTTP, TCP, TLS, WHOIS where applicable) and renders the result in milliseconds.

  3. 3
    Open the API tab

    Every web tool has a sibling /api/v1/http/headers JSON endpoint with the same payload. One copy-as-curl click and you're scripting it.

Why this matters

Headers are how the modern web declares its security posture. Auditing them is the highest-ROI thing you can do this week.

API equivalent
/api/v1/http/headers?q=https%3A%2F%2Fimtki.app 
curl -s '/api/v1/http/headers?q=https%3A%2F%2Fimtki.app'
Embed this tool
<iframe src="/http/headers?q={INPUT}&embed=1"
  width="100%" height="600" frameborder="0"></iframe>

Drop into any HTML page. The embed=1 flag hides nav and footer.

FAQ · HTTP headers

Common questions

Is HTTP headers free?
Yes — every tool is free on the web with a 200/hour rate limit per IP. The matching API endpoint /api/v1/http/headers is free up to 100 requests/hour, no key required.
Where does the data come from?
Real-time probes against authoritative sources (DNS root, RIRs, registries, the target server itself), plus partner data feeds from hostinfo.com (GeoIP/ASN) and hostcheck.com (reputation).
How fresh are the results?
Live by default. Cached for 5 minutes to make repeat queries instant; pass ?nocache=1 for a forced refresh.
Can I run this from the command line?
Yes — every tool ships with a copy-as-curl. There's also an official CLI: host.tools http headers YOUR_INPUT.
Can I monitor results over time?
Pro tier lets you schedule any tool to run every 1/5/15/60 min and alert on diff. See monitors.
host.tools Pro

Run HTTP headers on a schedule. Get pinged when it changes.

Pro gets you bulk lookups, monitors, webhook alerts, history, exports and 10,000 API calls/day. $19/mo.

See pricing Tour monitors
  • ✓Schedule any tool — every 1, 5, 15, 60 min
  • ✓Diff against last run, alert on change
  • ✓Webhook + email + Slack + PagerDuty + OpsGenie
  • ✓Bulk CSV upload, 1,000 inputs per job
  • ✓Export results as CSV / NDJSON / Excel
  • ✓90-day history, comparison view