check web redirect url status code checker

Check server response of

Server response
NS records
Whois domain
Response headers
Request headers
Raw HTML code
502 Bad Gateway - 11y17.com
HTTP Status: 502
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: nginx/1.18.0 (Ubuntu)
Date: Mon, 12 May 2025 23:46:30 GMT
Content-Type: text/html
Content-Length: 166
Connection: keep-alive
Access-Control-Allow-Origin: *

HTTP Code 502 Bad Gateway

502 status code 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: 11y17.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<html>
<head><title>502 Bad Gateway</title></head>
<body>
<center><h1>502 Bad Gateway</h1></center>
<hr><center>nginx/1.18.0 (Ubuntu)</center>
</body>
</html>

Whois info of domain

Domain Name: 11Y17.COM
Registry Domain ID: 2895488168_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.west.cn
Registrar URL: http://www.west.cn/
Updated Date: 2024-09-05T05:02:13Z
Creation Date: 2024-07-01T08:56:18Z
Registry Expiry Date: 2025-07-01T08:56:18Z
Registrar: Chengdu West Dimension Digital Technology Co., Ltd.
Registrar IANA ID: 1556
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: 86.28.62778877
Domain Status: ok https://icann.org/epp#ok
Name Server: NS1.JUDNS.COM
Name Server: NS2.JUDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-12T23:46:12Z <<<
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
TERMS OF USE: You are not authorized to access or query our Whois
by the following terms of use: You agree that you may use this Data only
to: (1) allow, enable, or otherwise support the transmission of mass