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301 Moved Permanently - grc.com
HTTP Status: 301
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Location: https://www.grc.com/intro.htm
Access-Control-Allow-Origin: *
X-Frame-Options: SAMEORIGIN
Server: GRC/IIS Hybrid Application Webserver
Date: Wed, 30 Apr 2025 09:50:27 GMT
Content-Length: 0
HTTP Code 301 Moved Permanently
301 Moved Permanently means that the requested resource has been permanently moved to a new URL. All future requests should use the new address.
When is Code 301 used?
- When changing a website domain
- When modifying URL structures
- When setting up redirects for SEO
What does Code 301 mean for the user?
The browser will automatically redirect the user to the new address, and search engines will update their indexes.
200 OK - https://www.grc.com/intro.htm
HTTP Status: 200
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Content-Type: text/html; charset=utf-8
Expires: Mon, 01 Jan 1990 00:00:00 GMT
Access-Control-Allow-Origin: *
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=31536000; preload
P3P: CP="NOI DSP COR NID NOR"
Set-Cookie: tpag=h2tpgwjqk5nos; path=/
Set-Cookie: ppag=h2tpgwjqk5nos; path=/; expires=Mon, 01-Jan-2046 00:00:00 GMT
Server: GRC/IIS Hybrid Application Webserver
Date: Wed, 30 Apr 2025 09:50:29 GMT
Connection: close
Content-Length: 15277
HTTP Code 200 OK
200 OK is a standard successful HTTP server response. It means that the client’s request (e.g., from a browser) was successfully processed, and the server is delivering the requested data.
When is Code 200 used?
- When loading a web page
- When successfully receiving an API response
- When processing a form or another HTTP request
What does Code 200 mean for the user?
The user receives content without errors, and the page or application functions properly. If Code 200 is accompanied by data, the browser or program processes and displays it to the user.
GET / HTTP/1.1 Host: grc.com Accept: */* User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head><title> Home of Gibson Research Corporation </title>
<meta name="author" content="Steve Gibson, GIBSON RESEARCH CORPORATION">
<meta name="keywords" content="hard drive data recovery, internet security, shieldsup, shieldsup!, shields up, steve gibson, spinrite" />
<meta name="description" content="Steve Gibson's and Gibson Research Corporation's Web homepage.">
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<link rel="stylesheet" media="all" type="text/css" href="/webfonts.css" />
</head><body style="background:black" link="#CC0000" vlink="#006666" alink="#FF0000"><a name="top"></a><a name="top"></a>
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gtag('js', new Date());
gtag('config', 'G-GS3MK15LN5');
</script>
<!-- ########################## GRC Masthead Menu ########################## -->
<div class="menuminwidth0"><div class="menuminwidth1"><div class="menuminwidth2">
<div id="masthead">
<a href="/default.htm"><img id="mastheadlogo" src="/mh-logo.gif" width="286" height="24" alt="Gibson Research Corporation" title="" /></a>
<img id="focus" src="/mh-focus.gif" width="121" height="13" alt="" title="What we're about" />
<a href="/mail.htm"><img id="email" src="/image/email-subscriptions.png" width="179" height="22" alt="email subscriptions" title=" User-managed email subscriptions " /></a>
</div>
<script async src="https://cse.google.com/cse.js?cx=000064552291181981813:y8yi5go2xza"></script>
<div id="search" class="gcse-search"></div>
<div class="menu">
<ul>
<li><a href="/default.htm"><img src="/mb-home.gif" width="76" height="18" alt="[Home]" title="" /><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul class="leftbutton">
<li><a href="/purchasing.htm"> Purchasing</a></li>
<li><a href="/sales.htm"> Sales Support</a></li>
<li><a href="/support.htm"> Technical Support</a></li>
<li><a href="/mail.htm"> Email Subscriptions</a></li>
<li><a href="/default.htm#bottom"> Contact Us</a></li>
<li><a href="https://forums.grc.com"> GRC Web Forums</a></li>
<li><a href="/privacy.htm"> Privacy Policy</a></li>
<!-- <li><a href="/siteoptions.htm"> Site Options</a></li> -->
<li><a href="/stevegibson.htm"> Steve's Projects Page</a></li>
<li><a href="/resume.htm"> Steve's Old Resume</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<ul>
<li><a href="/sr/spinrite.htm"><img src="/mb-products.gif" width="96" height="18" alt="[Products]" title="" /><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/upgrade.htm"> <b>Upgrade to v6.1</b></a></li>
<li><a href="/sr/spinrite.htm"> What is SpinRite?</a></li>
<li><a href="/sr/whatitdoes.htm"> What SpinRite Does</a></li>
<li><a href="/sr/user-manual.htm"> User Manual</a></li>
<li><a href="/sr/testimonials.htm"> User testimonials</a></li>
<li><a href="/sr/smart.htm"> S.M.A.R.T. Monitor</a></li>
<li><a href="/sr/faq.htm"> FAQ</a></li>
<li><a href="/sr/themovie.htm"> A Demo Video</a></li>
<li><a href="/cs/prepurch.htm"> Purchase SpinRite</a></li>
<li><a href="/sr/future.htm"> The Future</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<ul>
<li><a href="/x/ne.dll?bh0bkyd2"><img src="/mb-services.gif" width="94" height="18" alt="[Services]" title="" /><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/x/ne.dll?bh0bkyd2"> ShieldsUP!</a></li>
<li><a href="/revocation.htm"> Certificate Revocation</a></li>
<li><a href="/haystack.htm"> Password Haystacks</a></li>
<li><a href="/fingerprints.htm"> HTTPS Fingerprints</a></li>
<li><a href="/securitynow.htm"> Security Now!</a></li>
<li><a href="/dns/dns.htm"> DNS Spoofability Test</a></li>
<li><a href="/passwords.htm"> Perfect Passwords</a></li>
<li><a href="/ppp.htm"> PPP Passwords</a></li>
<li><a href="/media.htm"> Tech TV video clips</a></li>
<li><a href="/discussions.htm"> Newsgroup Discussions</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<ul>
<li><a href="/freepopular.htm"><img src="/mb-freeware.gif" width="98" height="18" alt="[Freeware]" title="" /><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul class="skinny">
<li><center><a href="/sqrl/sqrl.htm"><b>SQRL</b></a></center></li>
<li><a href=""><span class="drop"><span>Security</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/inspectre.htm"> InSpectre</a></li>
<li><a href="/securable.htm"> Securable</a></li>
<li><a href="/isbootsecure.htm"> IsBootSecure</a></li>
<li><a href="/lt/leaktest.htm"> Leaktest</a></li>
<li><a href="/stm/shootthemessenger.htm"> Shoot the messenger</a></li>
<li><a href="/unpnp/unpnp.htm"> Unplug n' Pray</a></li>
<li><a href="/freeware/dcom.htm"> DCOMbobulator</a></li>
<li><a href="/wmf/wmf.htm"> MouseTrap</a></li>
<li><a href="/wmf/wmf.htm"> MouseTrapCmd</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
<li><a href=""><span class="drop"><span>Utilities</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/bootable.htm"> BootAble</a></li>
<li><a href="/validrive.htm"> ValiDrive</a></li>
<li><a href="/incontrol.htm"> <b>In</b>Control</a></li>
<li><a href="/readspeed.htm"> ReadSpeed</a></li>
<li><a href="/dns/benchmark.htm"> DNS Benchmark</a></li>
<li><a href="/initdisk.htm"> InitDisk</a></li>
<li><a href="/never10.htm"> Never 10 (no upgrade)</a></li>
<li><a href="/wizmo/wizmo.htm"> Wizmo</a></li>
<li><a href="/id/idserve.htm"> ID Serve</a></li>
<li><a href="/freeware/clickey.htm"> ClicKey</a></li>
<li><a href="/ct/cleartype.htm"> Free & Clear</a></li>
<li><a href="/tip/id.htm"> IDentity (ASPI)</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
<li><a href=""><span class="drop"><span>Obsolete</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/cih/cih.htm"> FIX-CIH</a></li>
<li><a href="/tip/clickdeath.htm"> TIP (trouble in paradise)</a></li>
<li><a href="/oo-update.htm"> OptOut</a></li>
<li><a href="/xpdite/xpdite.htm"> XPdite</a></li>
<li><a href="/faq-shieldsup.htm"> NoShare</a></li>
<li><a href="/faq-shieldsup.htm"> LetShare</a></li>
<li><a href="/pw/patchwork.htm"> Patchwork</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<ul>
<li><a href=""><img src="/mb-research.gif" width="98" height="18" alt="[Research]" title="" /><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul class="skinny">
<li><a href=""><span class="drop"><span>General</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/malware.htm"> Malware Repository</a></li>
<li><a href="/sqrl/sqrl.htm"> SQRL Login Technology</a></li>
<li><a href="/ssl/ev.htm"> EV SSL/TLS Certificates</a></li>
<li><a href="/otg/uheprng.htm"> Ultra-high entropy PRNG</a></li>
<li><a href="/menudemo.htm"> Pure CSS web menus</a></li>
<li><a href="/nat/nat.htm"> NAT router security</a></li>
<li><a href="/pda/palmpower.htm"> PDA max battery life</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
<li><a href=""><span class="drop"><span>Pending</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/nf/netfilter.htm"> GRC NetFilter</a></li>
<li><a href="/tp/trustpuppy.htm"> TrustPuppy</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
<li><a href=""><span class="drop"><span>Historical</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/worms/25-01-03.htm"> Worm wars of 2001</a></li>
<li><a href="/downloaders.htm"> File downloader spying</a></li>
<li><a href="/ct/ctwhat.htm"> Sub-pixel font rendering</a></li>
<li><a href="/su/earthlink.htm"> Earthlink browser tag</a></li>
<li><a href="/tip/codfaq1.htm"> ZIP & JAZ click of death</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
<li><a href=""><span class="drop"><span>Dormant</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/vpn/vpn.htm"> OpenVPN</a></li>
<li><a href="/r&d/assimilator.htm"> The Assimilator</a></li>
<li><a href="/aspi_me.htm"> ASPI ME</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
<li><a href="/health.htm"><span class="drop"><span>Health</span>»</span><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><a href="/health.htm"> Health Homepage</a></li>
<li><a href="/health/lowcarb.htm"> The Low Carb Choice</a></li>
<li><a href="/health/vitamin-d.htm"> Vitamin D</a></li>
<li><a href="/health/sleep/healthy_sleep_formula.htm"> Healthy Sleep Formula</a></li>
<li><a href="/zeo.htm"> Zeo Sleep Manager Pro</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
<ul>
<li id="other"><a href="/pdp-8/pdp-8.htm"><img src="/mb-other.gif" width="77" height="18" alt="[Other]" title="" /><!--[if gt IE 6]><!--></a><!--<![endif]--><!--[if lt IE 7]><table border="0" cellpadding="0" cellspacing="0"><tr><td><![endif]-->
<ul>
<li><center><a href="/sqrl/sqrl.htm"><b>SQRL</b></a></center></li>
<li><a href="/pdp-8/pdp-8.htm"> PDP-8 Computers</a></li>
<li><a href="/misc/truecrypt/truecrypt.htm"> TrueCrypt Repository</a></li>
<li><a href="/Big-Number-Calculator.htm"> Big Number Calculator</a></li>
<li><a href="/tqc/TheQuietCanine.htm"> The Quiet Canine</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
</div> <!-- close "menu" div -->
</div></div></div> <!-- close the "minwidth" wrappers -->
<!-- ###################### END OF GRC MASTHEAD MENU ###################### -->
<a style="text-decoration: none;" href="/sr/spinrite.htm"><div style="color:#FFF; font-size:16pt; background-color:#0A8; text-align: center; font-family: Arial, Geneva, Helvetica, Verdana, sans-serif; "><b><i>Click Here</i></b> – for the SpinRite 6.1 video walkthrough.</div></a><center>
<center style="color:white; font-size:16pt; font-family: Arial,Helvetica,Sans-Serif,MS Sans Serif; margin:1em 0;" ><div>This easy-to-watch video provides a complete picture of<br />what SpinRite looks like, how it runs and what it does:</div>
<video style="border:2px solid #FFF; margin:1em;" controls width="768" height="480" poster="/image/walkthrough.png" preload="auto" onmouseup="stateOfPlay = this.paused;" onclick="if (stateOfPlay == this.paused && (event.offsetY?event.offsetY:event.pageY-this.offsetTop) < 520){ if(this.paused)this.play(); else this.pause(); return false; }">
<source src='https://media.grc.com/video/Walkthrough.mp4' type='video/mp4' />
<source src='https://media.grc.com/video/Walkthrough.webm' type='video/webm' />
</video>
<div style="color:#FFFF33; font-size:14pt; margin:1em 0;"><i>And the exclusive home of . . .</i>
<br><img src="/image/transpixel.gif" width=1 height=15 border="0"><br>
<a href="https://www.grc.com/default.htm"><img src="https://www.grctech.com/_eiybsck5vl24b_/image/su2blackglow.gif" alt="online internet security test" width=410 height=67 border="0"></a>
<br>
<font face="verdana" size=4>More than 107,871,634 shields tested!</font></div>
<font size=2>To proceed, click the logos or select from the menu above.</font></b></font>
</center>
</body>
</html>
Whois info of domain
Domain Name: GRC.COM
Registry Domain ID: 166642_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.tucows.com
Registrar URL: http://www.tucows.com
Updated Date: 2024-11-25T22:21:23Z
Creation Date: 1991-12-17T05:00:00Z
Registry Expiry Date: 2033-12-16T05:00:00Z
Registrar: Tucows Domains Inc.
Registrar IANA ID: 69
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.4165350123
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: NS4.CUSTOMER.LEVEL3.NET
Name Server: NS6.CUSTOMER.LEVEL3.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
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