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502 Bad Gateway - sy9d.com
HTTP Status: 502
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: NgxFence
Date: Sat, 17 May 2025 10:02:34 GMT
Content-Type: text/html
Content-Length: 4266
Connection: close
X-Cache: DYNAMIC

HTTP Code 502 Bad Gateway

502 Bad Gateway indicates that the server acting as a gateway or proxy received an invalid response from an upstream server.

When is Code 502 used?

  • When a server is down or unreachable
  • When there is a misconfiguration in server settings
  • When a reverse proxy or load balancer fails to connect to the backend server

What does Code 502 mean for the user?

The user cannot access the requested resource due to a temporary issue between servers.

GET / HTTP/1.1
Host: sy9d.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<html>
<head>
<title>502</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link href='https://libs.jshub.com/font-awesome/5.10.0-12/css/fontawesome.min.css' rel='stylesheet'>
<link href='https://libs.jshub.com/font-awesome/5.10.0-12/css/solid.min.css' rel='stylesheet'>
<style>
body{margin: 0px;padding: 0px;font-family: Tahoma, Pingfang SC, Microsoft YaHei, SimSun;font-size: 12px;color: #353535;background-color: #efefef;}
.brdiv {clear: both;width: 100%;height: 0px;line-height: 0px;padding: 0px;margin: 0px;border: none;background-color: transparent;background-image: none;}
.mdiv{position: absolute;top: 50%;left: 50%;background-color: #fff;width: 800px;height: auto;transform: translate(-50%, -50%);box-shadow: 2px 5px 5px 2px #dfdfdf;padding-bottom: 20px;}
.mtd{width: 100%; height: 10px; background-color: #376888;}
.mid{margin: 0px auto; text-align: center; padding: 30px 0px; width: 750px; border-bottom: solid 1px #dfdfdf;}
.miitm{width: 215px;float: left;font-size: 80px;text-align: center;position: relative;color: #376888;}
.miitm .mti{width: 100%;height: 30px;float: left;font-size: 15px;font-weight: bold;color: #353535;}
.miitm .fa-check-circle,.miitm .fa-times-circle,.miitm .fa-question-circle{font-size: 20px;position: absolute;bottom: 0px;right: 60px;}
.mil{ width: 60px;height: 80px;float: left;font-size: 80px;color: #ececec;text-align: center;margin-left: -10px;margin-top: 30px;position: relative;}
.mil .fa-check-circle,.mil .fa-times-circle,.mil .fa-question-circle{font-size: 40px;position: absolute;top: 22px;left: 20px;}
.miitm .fa-check-circle,.mil .fa-check-circle{color: #4CAF50;}
.miitm .fa-times-circle,.mil .fa-times-circle{color: #E91E63;}
.miitm .fa-question-circle,.mil .fa-question-circle{color: #1E79E9;}
.cmsg{width: 700px;height: auto;margin: 0px auto;padding: 10px 0px;}
.cnum{float: left;font-size: 38px;margin-left: 50px;}
.cmes{float: left;font-size: 15px;font-weight: bold;margin-top: 20px;margin-left: 20px;}
.omsg{width: 600px;height: auto;margin: 0px auto;padding: 10px 0px;}
.ottl{font-size: 15px;height: 30px;}
.oitm{float: left;height: 25px;line-height: 25px;color: #959595;overflow: hidden;}
.blk{display: block;line-height: normal;}
.fmsg{width: 750px;height: auto;margin: 10px auto;padding: 20px 0px; border-top: solid 1px #dfdfdf;}
.fitm{width: 100%; text-align:center; float: left;height: 25px;line-height: 25px;overflow: hidden;}
a{text-decoration: none;}
a:hover{text-decoration:underline;}
a:visited{color: blue;}
.reqid{font-family: monospace;font-weight: bold;}
.mwm{z-index: -1;width: 90%;text-align: right;position: absolute;margin-top: 45px;font-size: 190px;color: #ececec;}
</style>
</head>
<body>
<div class="mdiv">
<div class="mtd"></div>
<div class="mid">
<div class="miitm"><div class="mti">用户</div><span class="fa fa-desktop blk"></span></div>
<div class="mil"><span class="fa fa-exchange-alt blk"></span><span class="fa fa-check-circle blk"></span></div>
<div class="miitm"><div class="mti">平台</div><span class="fa fa-cloud blk"></span></div>
<div class="mil"><span class="fa fa-exchange-alt blk"></span><span class="fa fa-times-circle blk"></span></div>
<div class="miitm"><div class="mti">源站</div><span class="fa fa-server blk"></span></div>
<div class="brdiv"></div>
</div>
<div class="mwm"><span class="fa fa-cogs blk" <="" span=""></span></div>
<div class="cmsg">
<div class="cnum">502</div><div class="cmes">请求失败</div><div class="brdiv"></div>
</div>
<div class="omsg">
<div class="ottl">可能原因:</div><div class="brdiv"></div>
<div class="oitm"><li>源站配置错误或者未生效</li></div><div class="brdiv"></div>
<div class="oitm"><li>源站的网络发生故障</li></div><div class="brdiv"></div>
</div>
<div class="omsg">
<div class="ottl">访问信息:</div><div class="brdiv"></div>
<div class="oitm"><li>访问时间: <span>2025-05-17 10:02:34 GMT</span></li></div><div class="brdiv"></div>
<div class="oitm"><li>访问来源: <span>135.181.60.100</span></li></div><div class="brdiv"></div>
</div>
<div class="fmsg">
<div class="fitm">Request ID: <span class="reqid">d7cc9a6ad1f7dbfceb7a81777f017263</span> - Performance & Security by <a href="https://www.ngxfence.com">NgxFence</a></div>
</div>
</div>
</body>
</html>

Whois info of domain

Domain Name: SY9D.COM
Registry Domain ID: 2153895786_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.dynadot.com
Registrar URL: http://www.dynadot.com
Updated Date: 2024-08-03T04:51:04Z
Creation Date: 2017-08-15T18:44:17Z
Registry Expiry Date: 2025-08-15T18:44:17Z
Registrar: Dynadot Inc
Registrar IANA ID: 472
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +16502620100
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: A.DNSPOD.COM
Name Server: B.DNSPOD.COM
Name Server: C.DNSPOD.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-17T10:02:23Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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