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Domain > caffeinelevels.com
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More information on this domain is in
AlienVault OTX
Is this malicious?
Yes
No
DNS Resolutions
Date
IP Address
2022-05-07
65.8.56.57
(
ClassC
)
2022-05-07
13.249.120.18
(
ClassC
)
2022-05-07
65.8.56.72
(
ClassC
)
2022-05-07
65.8.56.52
(
ClassC
)
2022-10-16
18.160.78.8
(
ClassC
)
2026-01-22
185.199.109.153
(
ClassC
)
Port 80
HTTP/1.1 301 Moved PermanentlyConnection: keep-aliveContent-Length: 162Server: GitHub.comContent-Type: text/htmlLocation: https://caffeinelevels.com/X-GitHub-Request-Id: D8A8:1E6A6E:11EDBC:12732C:69722D7EAccept-Ranges: bytesAge: 0Date: Thu, 22 Jan 2026 14:00:30 GMTVia: 1.1 varnishX-Served-By: cache-bfi-kbfi7400046-BFIX-Cache: MISSX-Cache-Hits: 0X-Timer: S1769090430.351495,VS0,VE77Vary: Accept-EncodingX-Fastly-Request-ID: 0061d576cdaa57c9898259b57a05813d64893bdb html>head>title>301 Moved Permanently/title>/head>body>center>h1>301 Moved Permanently/h1>/center>hr>center>nginx/center>/body>/html>
Port 443
HTTP/1.1 200 OKConnection: keep-aliveContent-Length: 4476Server: GitHub.comContent-Type: text/html; charsetutf-8Last-Modified: Fri, 09 Jan 2026 06:19:01 GMTAccess-Control-Allow-Origin: *ETag: 69609dd5-117cexpires: Thu, 22 Jan 2026 14:10:30 GMTCache-Control: max-age600x-proxy-cache: MISSX-GitHub-Request-Id: D190:35FF58:1249AB:12CF15:69722D7EAccept-Ranges: bytesAge: 0Date: Thu, 22 Jan 2026 14:00:30 GMTVia: 1.1 varnishX-Served-By: cache-bfi-kbfi7400053-BFIX-Cache: MISSX-Cache-Hits: 0X-Timer: S1769090430.477416,VS0,VE81Vary: Accept-EncodingX-Fastly-Request-ID: 47af9c7e3a18af82b085b2d1f8e08df73bfadc2d !doctype html> html langen> head> meta charsetutf-8 /> meta nameviewport contentwidthdevice-width,initial-scale1 /> title>Caffeine Tools – Cutoff Time, Levels, and Clearance Calculators/title> meta namedescription contentProfessional caffeine & sleep calculators: cutoff time, multiple-dose levels curve, and clearance timing. Educational estimates only. /> link relcanonical hrefhttps://caffeinelevels.com/ /> link relicon href/assets/favicon.svg typeimage/svg+xml /> link relstylesheet href/assets/style.css /> /head> body> div classcontainer> div classheader> a classbrand href/> div classlogo>C/div> div> div classbrand-title>Caffeine Tools/div> div classmuted>Sleep-friendly decisions, fast/div> /div> /a> div classnav> a href/tools/>Tools/a> a href/guides/>Guides/a> a href/#faq>FAQ/a> /div> /div>div classhero> h1>Caffeine & Sleep Tools/h1> p> Practical calculators that help you plan caffeine timing and minimize sleep disruption — without hype. Estimates are based on caffeine half-life logic and widely cited sleep guidance. /p> div classpills> span classpill>Fast/span> span classpill>Mobile-friendly/span> span classpill>No signup/span> span classpill>Tool-first SEO/span> /div>/div>div classgrid> div classcard> h2>Caffeine Cutoff Time/h2> p>Find the latest time you can have caffeine so your bedtime level stays below a target./p> div classactions> a classbtn href/caffeine-cutoff-calculator/>Open calculator/a> a classbtn secondary href/guides/caffeine-and-sleep-6-hours/>Why 6 hours matters/a> /div> /div> div classcard> h2>Caffeine Levels (Multiple Doses)/h2> p>Enter multiple drinks and visualize your estimated caffeine curve — including bedtime remaining./p> div classactions> a classbtn href/caffeine-levels-calculator/>Open calculator/a> a classbtn secondary href/guides/how-long-does-caffeine-last/>Timeline guide/a> /div> /div> div classcard> h2>Caffeine Clearance/h2> p>Estimate when your caffeine drops below a chosen threshold (e.g., 25mg) after your last intake./p> div classactions> a classbtn href/caffeine-clearance-calculator/>Open calculator/a> a classbtn secondary href/guides/caffeine-sensitivity/>Sensitivity guide/a> /div> /div>/div>div classsection idfaq> h2>Credibility, without medical claims/h2> div classnotice ok> strong>Based on research showing caffeine can affect sleep even 6 hours before bed/strong> div classmuted> Many sleep resources recommend avoiding substantial caffeine within ~6 hours of bedtime, since it may still reduce sleep quality. This site provides educational estimates to help you plan, not diagnose or treat anything. /div> /div> details> summary>Is this accurate for everyone?/summary> p>Caffeine metabolism varies a lot between people. That’s why each calculator lets you choose a sensitivity tier (half-life)./p> /details> details> summary>Why do you use half-life?/summary> p>Half-life is a simple model for how quickly caffeine tends to decline. It’s a useful estimate for planning cutoff time./p> /details> details> summary>Medical disclaimer/summary> p>This website is for educational purposes only and is not medical advice. If you have health concerns, talk to a licensed clinician./p> /details>/div>div classsection> h2>Guides/h2> div classcard> p classmuted stylemargin:0> Start here: a href/guides/caffeine-half-life-explained/>Caffeine half-life explained/a> · a href/guides/how-long-does-caffeine-last/>How long caffeine lasts/a> · a href/guides/sleep-friendly-caffeine-strategy/>Sleep-friendly caffeine strategy/a> /p> /div>/div> div classfooter>Educational estimates only. Not medical advice./div> /div> script src/assets/app.js>/script> /body> /html>
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