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302 Found - luogu.com
HTTP Status: 302
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Wed, 30 Apr 2025 00:59:54 GMT
Content-Type: text/html
Content-Length: 143
Connection: keep-alive
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Location: https://www.luogu.com/
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=SvCSwEugrF8cldwBUgRxAQoUVtqhSz0jmb%2BDQmdzZSOk8LRJhp%2FtYZd8cVxgXXoXCtDDnMQU0bUwVWVi4oUu0oz%2B6FWCAZzCjXhQzri4XwIXPNhAf4wlbG1yX6xRLEi6ieI6YIxyRcM%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 93831961cdabf8a4-ARN
alt-svc: h3=":443"; ma=86400
server-timing: cfL4;desc="?proto=TCP&rtt=11792&min_rtt=11792&rtt_var=5896&sent=1&recv=3&lost=0&retrans=0&sent_bytes=0&recv_bytes=165&delivery_rate=0&cwnd=249&unsent_bytes=0&cid=0000000000000000&ts=0&x=0"

HTTP Code 302 Found (Moved Temporarily)

302 response code indicates that the requested resource is temporarily available at a different URL.

When is Code 302 used?

  • When temporarily changing a page URL
  • When testing new content
  • During temporary maintenance

What does Code 302 mean for the user?

The user is automatically redirected to the new URL, but search engines continue to index the old address.

404 Not Found - https://www.luogu.com/
HTTP Status: 404
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Wed, 30 Apr 2025 00:59:55 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
vary: Accept-Encoding
luogu-serve-by: CNHAZb.web-002
cf-cache-status: DYNAMIC
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=is2aWLgDFpf4TGkwMOg4R%2BNLJN6uDXCCD4bLU%2BhV5PXJsfFiOcwfOqgLfdDhyFmgSLh2QmcfbpyNIcmu6kpvi4tBmhbsYB3kCyC%2FCKMWgeGExxefAy813jTAiGmcQrgo2pitRXM4ngvgUoef"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 938319624e36f8a6-ARN
alt-svc: h3=":443"; ma=86400
server-timing: cfL4;desc="?proto=TCP&rtt=10933&min_rtt=7421&rtt_var=5174&sent=5&recv=7&lost=0&retrans=0&sent_bytes=2829&recv_bytes=788&delivery_rate=531755&cwnd=252&unsent_bytes=0&cid=82100561a19dbe63&ts=1132&x=0"

HTTP Code 404 Not Found

404 response code means that the requested page or resource was not found on the server.

When is Code 404 used?

  • When a page is deleted
  • When the URL is incorrect
  • When there are navigation issues on the website

What does Code 404 mean for the user?

The user sees an error message, and search engines may remove the page from their index.

GET / HTTP/1.1
Host: luogu.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<meta http-equiv="X-UA-Compatible" content="IE=edge">
		<title>404 - 洛谷日爆</title>
		<base href="https://cdn.luogu.com.cn/errpage/" />
	</head>
	<body>
		<div class="header"><div class="max"><img src="logo.png" style="height: 3em;"></div></div>
		<div style="margin-top: 40px;">
			<div class="card max" style="background-image: url('gg1.svg');">
				<h1>404 Not Found</h1>
				<p>找不到资源</p>
				<p><small>真的没有了啦~</small></p>
				<p><span class="diag">[2025-04-30T08:59:55+08:00] 2a01:4f9:4b:3f5f::2 -&gt; Cloudflare -&gt; CNHAZb.web-002</span></p>
			</div>
		</div>
		<div class="footer max">2013-<span id="year">9999</span>, © 洛谷</div>
		<style>
			html, body { padding: 0; margin: 0; font-size: 16px; background-color: #f2f2f2; }
			h1 { margin: .25em 0; font-size: 3.5em; font-weight: lighter; }
			small { font-size: .875em; color: #aaa; }
			p { font-size: 1em; margin: .25em 0; }
			.max { box-sizing: border-box; margin-left: auto; margin-right: auto; width: 100%; max-width: 1200px; }
			.header { margin: 0 !important; width: 100%; box-sizing: border-box; background-color: #fff; box-shadow: 0px 1px 3px rgba(26, 26, 26, 0.1); padding: .25em 20px; }
			.footer { text-align: center; padding: 12px 0; }
			.card { text-align: center; background: #fff; box-shadow: 0px 1.03426px 3.10278px rgba(26, 26, 26, 0.1); padding-top: .75em; min-height: 800px; background-position: bottom; background-repeat: no-repeat; background-size: cover; }
			.beian { color: #999; text-decoration: none; }
			.diag { font-size: .75em; font-family: monospace, monospace, Arial; color: #ddd; }
		</style>
		<script>document.getElementById('year').textContent = new Date().getFullYear();</script>
	</body>
</html>

Whois info of domain

Domain Name: LUOGU.COM
Registry Domain ID: 914656817_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.porkbun.com
Registrar URL: http://porkbun.com
Updated Date: 2024-01-30T16:28:03Z
Creation Date: 2007-04-07T18:47:03Z
Registry Expiry Date: 2027-04-07T18:47:03Z
Registrar: Porkbun LLC
Registrar IANA ID: 1861
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: 5038508351
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NSC1.LUOGU.COM
Name Server: NSC2.LUOGU.COM
Name Server: NSC3.LUOGU.COM
Name Server: NSC4.LUOGU.COM
DNSSEC: signedDelegation
DNSSEC DS Data: 30488 13 2 E2430D14B4DEBB6871BD677AEEF0740D611432B2B686863B983D88D2B4F2739A
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-04-30T00:59:38Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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