Check server response of

Server response
NS records
Whois domain
Response headers
Request headers
Raw HTML code
502 Bad Gateway - mach3.com
HTTP Status: 502
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: Microsoft-Azure-Application-Gateway/v2
Date: Fri, 02 May 2025 23:47:57 GMT
Content-Type: text/html
Content-Length: 1241
Connection: keep-alive
ETag: "680f65c2-4d9"

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: mach3.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
<!DOCTYPE html>
<html lang="en-US">
<head>
	<title>Sorry!</title>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css"/>
	<style>
		img {
			max-width: 40%;
			height: auto;
		}
		
		.parent-container {
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			height: 100vh;
		}
	</style>
</head>
<body>
	<div class="parent-container">
		<div class="brand-logo d-flex flex-column justify-content-center align-items-center mb-4 text-center">
			<a href="https://us.pg.com">
				<img alt="Procter & Gamble logo" src="https://azcsnabusstopsitedown.pg.com/media/PGLogo_resized.png">
			</a>
		</div>
		<div class="content d-flex flex-column justify-content-center align-items-center text-center">
			<h1>Our site is currently undergoing maintenance.</h4>
			<p>We apologize for the inconvenience. Please check back later or feel free to contact our support team.</p>
			<a href="https://us.pg.com/contact-us/" class="request-help"><i class="far fa-question-circle"></i> Support</a>
		</div>
	</div>
</body>
</html>                               

Whois info of domain

Domain Name: MACH3.COM
Registry Domain ID: 1771516_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.corporatedomains.com
Registrar URL: http://cscdbs.com
Updated Date: 2024-08-09T05:08:25Z
Creation Date: 1998-08-14T04:00:00Z
Registry Expiry Date: 2025-08-13T04:00:00Z
Registrar: CSC Corporate Domains, Inc.
Registrar IANA ID: 299
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: 8887802723
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS1-03.AZURE-DNS.COM
Name Server: NS2-03.AZURE-DNS.NET
Name Server: NS3-03.AZURE-DNS.ORG
Name Server: NS4-03.AZURE-DNS.INFO
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-02T23:47:42Z <<<
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