check web redirect url status code checker

Check server response of

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NS records
Whois domain
Response headers
Request headers
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502 Bad Gateway - smxx.com
HTTP Status: 502
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: Tengine
Date: Fri, 09 May 2025 05:31:46 GMT
Content-Type: text/html;charset=utf-8
Content-Length: 0
Connection: keep-alive
Keep-Alive: timeout=15
BackendServer: Aliyun URL Forwarding Server
Reason: NoICP

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

Whois info of domain

Domain Name: SMXX.COM
Registry Domain ID: 81056623_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-12-01T05:56:32Z
Creation Date: 2001-12-12T06:17:37Z
Registry Expiry Date: 2025-12-12T06:17:37Z
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: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: DNS21.HICHINA.COM
Name Server: DNS22.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-09T05:31:33Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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