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://www.google.com/finance/sitemap.xml?ucbcb=1 200 3 hops 357 ms
Redirect chain
  1. 302 https://www.google.com/finance/sitemap.xml 75 ms
  2. 303 https://consent.google.com/m?continue=https://www.google.com/finance/sitemap.xml&gl=NL&m=0&pc=fgc&cm=2&hl=en-US&src=1 35 ms
  3. 200 https://www.google.com/finance/sitemap.xml?ucbcb=1 117 ms
Final response headers (21)
content-type text/xml; charset=utf-8
vary Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site
cache-control no-cache, no-store, max-age=0, must-revalidate
pragma no-cache
expires Mon, 01 Jan 1990 00:00:00 GMT
date Sat, 09 May 2026 14:46:14 GMT
p3p CP="This is not a P3P policy! See g.co/p3phelp for more info."
accept-ch Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-WoW64, Sec-CH-UA-Form-Factors, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version
permissions-policy ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-full-version-list=*, ch-ua-model=*, ch-ua-wow64=*, ch-ua-form-factors=*, ch-ua-platform=*, ch-ua-platform-version=*
cross-origin-resource-policy same-site
content-security-policy-report-only require-trusted-types-for 'script';report-uri /finance/_/GoogleFinanceUi/cspreport
cross-origin-opener-policy same-origin-allow-popups
content-security-policy script-src 'report-sample' 'nonce-f18mRMFCdDyenOvnohhorQ' 'unsafe-inline';object-src 'none';base-uri 'self';report-uri /finance/_/GoogleFinanceUi/cspreport;worker-src 'self'
reporting-endpoints default="/finance/_/GoogleFinanceUi/web-reports?context=eJwN0ndYVFcaBnAcvpnP3lAUWIMlCcqiAi4iCPccxKirIGVgZu7ce8Wu2BA1URAlBTGxoGjsyzyuGg0SZRMR24IaEGMUFVHsbVcxkPgETUJsuPv-8XsOM3O-8p6HtiUe_l7uboEQBv5tvd0S-nu75YW-73ahQbqtqo9yC1g-1q0s9JjpNPSxHTOt_MstU1CnOKo3x9OCrHjK-SWeUtYlUNKlBPJvSaAlaxOpi5-VXvhbKSPWSleWW-m_2VYqPm-lgMtW6vTKSmc8kmjOJ0l01SuZnr-fTHpOMj2rTqaGfjbyjrLR05k2SkqzUZcFNvptmY3ePWKjrHobFby1UaO_naZE2SlhrJ16z7GTlm2nVyvs9DDPTj8ctFNzmZ361Nop4JGdhvZ0kL-Xg1b7OahtmIOWj3DQldEOOjbfQQUfO2j-Bgdt3OOgnl85KGKvg-phyCEHRVU6qPw8aq44aIxJpYo2Krnaq3QKUruq9LduKgV7qjQoQKW8EJXuh6n0rVRpZLxKYdNUSpqt0uR5KrVPV6k2X6WWnfhcqNJUmAEvilSa-2-VPE-q9KRCpfpanHDlmko376nU2ITaXk5K7-uk8H5OGg4HQ500MNFJvTUnjVrsJDu4sp30YLWTcjY7ad4FJ6l3nBTx0Endm53U-NJJg9w1mgD5HTRSfTRKGaBRA0wK0igXzgRr9EW4RpsiNNr3gUYhozQqG6fR1PEaVeoarZ2uUSm0m6vRfjidplEVrFqo0RrwXaSRZ5ZG3b7QKHmNRu7rNJoDSyAD1p3ArDKNtHKNnlZhfrVG2yDhpkYd7mtUzDo1-enkNVinG0N0GhajUzhEgJ9Dp3hNp-gUnfZm6DQgU6eBMA92rdDpo5U6nd6gUxVc3KTTywKd3uzUKX23ThO_0qlToU6e0AN6QvtSnTqCB2w7pVMBqBU6PavEeV6n19ACpgvofwkz4Q7885pOj-p0-vo6-tzQqRhqbun0-I5OXe_pdO6hTkee6NT6mU5v3-i0-i1mtDLo72RQHGSyQftbG_QN_ApaG4POtDPodA-DJvkYNMzXoAhYChP74c5gg8YGGzQenkFQuEGBww16DluEQaujDFoLG-BEjEExsbiXaNCPqkElTtyZYtDL6Qa9gjdQk2pQ7XzUpBtUnWmQ7-cGfQ_6Kthm0OsCg3a4DNpTZJBPMeYc3Wq-n-0yz_rYZc7b7TLHPXKZV9y8aN4Ci3ZdMufCKvgHBPW-Yo6GBT2vmnPgeeYNc7elN8xL2GRZ39dk2QzuASaLPtxkmRZhsoQJk6V8hMlyYIzJcnacybK90t2yC_ZBDTQvjLW0XhRroadxlt3fxVsOwDFfq6UMSgZYLV7lVksvmD7Sk1PB_1Ik_34tkk_8J5JPQveGSPYC8XMkj4NBTZGc_yKSN0Nnd4W7QalZ4SNQBuVQCWfgPFyA4k4Km70VdvoonOyncGJ_hR8EKOw5ROGqEIWHhSkcAd0jFe4Pa4TCp6MV_hVC4xSOg5lQBNXxCm-wKtxgV1iqCrOucMpchSdCxofomYE9IONzhZfBcQhfo7CABFi2VuE3sH29wi5ola_wvg0KP4IJRfj9oML1xQrfLFE487DC18oV9j6JfBUK365S-Gy1wueg8LLCByGvRmGvWoXTryq8HErqFJ5yXeGBtxUOu6Pw43qFG-HPJwpnNSjs-zPyN2FWM-7BIlgCp1qwi5vgvm0E29oKHt1BsBW8Owv-tqvgAA_BXboL7g5jewru5SXY4Su4ELr2FpzfV_DLdwXv9cPf_QVvhoC_Cp4RKDgXPEIEPxsqeONwwV_Ce5GCB8C5GMyLFxydLDh9huCT8HiW4AbQZwueCCvmCh6TJjhxAWoXC67IEHw4U3ApNC4V_GS54PHZqPtU8M3PBLvnCvaE5pXYc7Xgd8AXatajZpPg43Bvi-DftwoO3yY4AlptF9wEWTsE17kET90pOG-X4D3wHGL3Ck6Ggn2CXfuRo0iwzzeCl30n-BOYeUjwHPgNlh1GnqN4Q-hRJbjkB8GBP-I8j3zVggddxAmHavC-dYJHgd91wXdvCR5xR3Ac2OAy_AFpdwUnPBQ864ng1J8wBz5tFPwZBD8V3O9PwetfC65_g6xmyckwEepAtpU8v53kxPaS_9dR8qROkkd7Sh4DY2EJlPeQvNVL8n7w8pZ8H2LekWzxldznPclWsMEkqINIP8kComDIYMkdgiT_FCK5dCh6hEoePAzfg4SXYZLTwiUvhNnDJS-CnAjJzRCtSF4chT7RknU4AytHSl46Cv1GS_4FlDGSF4yT3D4Gu8HkeMl3kyQ_hCZNcrYuOdeQ_D10nCC5AZ7ChBTJy2DYNMnjYOpsyV0WSz6-FHkhJkvyePjXCsm3cyXfgwfgWoc98iXXQMtGyW_B7Uu85xbkc0kO2CfxPyD5aKHkxgPYEb4ukVwIRbCmFDuVIe8pZIWPoL4Cb1AlecdZydtrJe8Ej6uSV_WO5Xxw-PwR2rVd69L8lkuWzpcrc5x9e01OS0-Znjpv0rwp0wZ-mJoSHBg8NDAkMHRQYFDK_MD_A-bXLgY"
content-encoding gzip
server ESF
x-xss-protection 0
x-frame-options SAMEORIGIN
x-content-type-options nosniff
set-cookie __Secure-ENID=33.SE=fKdhVn96lqdrlmPTmEiBA49eizq5q0LqRLW_ePo3aj1Twj-KdWbt5LPiKW2iOfZom1vrCzH72e0qDg_HU3Ra2si4tHULXQOjLVREgPrCMV02QbU8Ft3_GOWimRtkJxAFZECt48sndm2oTUd3kedzHUrc938vW0Csy0KKKoiw8q-heDEmslxmoCw9q2NHaWXVxMmdLoBiwM3NTbTnLWD2B_S3pYtLW8y2-dV5NijqkkGc4NxQ3n-9AZg; expires=Wed, 09-Jun-2027 07:04:32 GMT; path=/; domain=.google.com; Secure; HttpOnly; SameSite=lax
alt-svc h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
Tech stack
Google AnalyticsHTTP/3 (QUIC)
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%2Fwww.google.com%2Ffinance%2Fsitemap.xml 
curl -s '/api/v1/http/headers?q=https%3A%2F%2Fwww.google.com%2Ffinance%2Fsitemap.xml'
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