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301 Moved Permanently - r2cn.com
HTTP Status: 301
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Wed, 07 May 2025 06:19:14 GMT
Server: Apache
X-Powered-By: PHP/8.1.32
X-Redirect-By: WordPress
Location: https://r2cn.com/
Content-Length: 0
Content-Type: text/html; charset=UTF-8

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.

500 Internal Server Error - https://r2cn.com/
HTTP Status: 500
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Wed, 07 May 2025 06:19:16 GMT
Server: Apache
X-Powered-By: PHP/8.1.32
Link: <https://r2cn.com/wp-json/>; rel="https://api.w.org/", <https://r2cn.com/wp-json/wp/v2/pages/6>; rel="alternate"; type="application/json", <https://r2cn.com/>; rel=shortlink
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, max-age=0
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

HTTP Code 500 Internal Server Error

500 Internal Server Error indicates an internal server error preventing the request from being processed.

When is Code 500 used?

  • When there are failures in server-side code
  • When there are database issues
  • When the server is overloaded

What does Code 500 mean for the user?

The user cannot access the resource, and the website administrator needs to fix the issue.

GET / HTTP/1.1
Host: r2cn.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

	<!DOCTYPE html>
	<html  lang="zh-Hans" prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#">
	<head>
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1" />

		<link rel="profile" href="https://gmpg.org/xfn/11" />
		<link rel="pingback" href="https://r2cn.com/xmlrpc.php" />
						<script>document.documentElement.className = document.documentElement.className + ' yes-js js_active js'</script>
				<title>日本商业项目信息 &#8211; 日本商业项目信息</title>
<!DOCTYPE html>
<html lang="zh-Hans" prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#">
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta name="viewport" content="width=device-width">
		<meta name='robots' content='max-image-preview:large, noindex, follow' />
	<title>WordPress &rsaquo; 错误</title>
	<style type="text/css">
		html {
			background: #f1f1f1;
		}
		body {
			background: #fff;
			border: 1px solid #ccd0d4;
			color: #444;
			font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
			margin: 2em auto;
			padding: 1em 2em;
			max-width: 700px;
			-webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, .04);
			box-shadow: 0 1px 1px rgba(0, 0, 0, .04);
		}
		h1 {
			border-bottom: 1px solid #dadada;
			clear: both;
			color: #666;
			font-size: 24px;
			margin: 30px 0 0 0;
			padding: 0;
			padding-bottom: 7px;
		}
		#error-page {
			margin-top: 50px;
		}
		#error-page p,
		#error-page .wp-die-message {
			font-size: 14px;
			line-height: 1.5;
			margin: 25px 0 20px;
		}
		#error-page code {
			font-family: Consolas, Monaco, monospace;
		}
		ul li {
			margin-bottom: 10px;
			font-size: 14px ;
		}
		a {
			color: #2271b1;
		}
		a:hover,
		a:active {
			color: #135e96;
		}
		a:focus {
			color: #043959;
			box-shadow: 0 0 0 2px #2271b1;
			outline: 2px solid transparent;
		}
		.button {
			background: #f3f5f6;
			border: 1px solid #016087;
			color: #016087;
			display: inline-block;
			text-decoration: none;
			font-size: 13px;
			line-height: 2;
			height: 28px;
			margin: 0;
			padding: 0 10px 1px;
			cursor: pointer;
			-webkit-border-radius: 3px;
			-webkit-appearance: none;
			border-radius: 3px;
			white-space: nowrap;
			-webkit-box-sizing: border-box;
			-moz-box-sizing:    border-box;
			box-sizing:         border-box;

			vertical-align: top;
		}

		.button.button-large {
			line-height: 2.30769231;
			min-height: 32px;
			padding: 0 12px;
		}

		.button:hover,
		.button:focus {
			background: #f1f1f1;
		}

		.button:focus {
			background: #f3f5f6;
			border-color: #007cba;
			-webkit-box-shadow: 0 0 0 1px #007cba;
			box-shadow: 0 0 0 1px #007cba;
			color: #016087;
			outline: 2px solid transparent;
			outline-offset: 0;
		}

		.button:active {
			background: #f3f5f6;
			border-color: #7e8993;
			-webkit-box-shadow: none;
			box-shadow: none;
		}

			</style>
</head>
<body id="error-page">
	<div class="wp-die-message"><p>此站点遇到了致命错误。</p><p><a href="https://wordpress.org/documentation/article/faq-troubleshooting/">了解有关对 WordPress 进行故障排除的更多信息。</a></p></div></body>
</html>

Whois info of domain

Domain Name: R2CN.COM
Registry Domain ID: 1546137161_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2025-02-10T04:06:58Z
Creation Date: 2009-03-09T08:53:27Z
Registry Expiry Date: 2026-03-09T08:53:27Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS15.HICHINA.COM
Name Server: DNS16.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-07T06:19:02Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
NOTICE: The expiration date displayed in this record is the date the
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