check web redirect url status code checker

Check server response of

Server response
NS records
Whois domain
Response headers
Request headers
Raw HTML code
401 Unauthorized - sntpv.com
HTTP Status: 401
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Mon, 19 May 2025 12:17:45 GMT
Server: Apache
WWW-Authenticate: Basic realm="Acceso restringido"
Content-Length: 381
Content-Type: text/html; charset=iso-8859-1

HTTP Code 401 Unauthorized

401 Unauthorized means that access to the requested resource requires authentication.

When is Code 401 used?

  • When accessing a restricted page without login credentials
  • When an API request lacks valid authentication tokens

What does Code 401 mean for the user?

The user must log in or provide valid credentials to access the resource.

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

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>401 Unauthorized</title>
</head><body>
<h1>Unauthorized</h1>
<p>This server could not verify that you
are authorized to access the document
requested.  Either you supplied the wrong
credentials (e.g., bad password), or your
browser doesn't understand how to supply
the credentials required.</p>
</body></html>

Whois info of domain

Domain Name: SNTPV.COM
Registry Domain ID: 2070663086_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.tecnocratica.net
Registrar URL: http://www.registrador.es
Updated Date: 2024-10-28T09:26:29Z
Creation Date: 2016-11-01T09:09:10Z
Registry Expiry Date: 2025-11-01T09:09:10Z
Registrar: Tecnocratica Centro de Datos, S.L.
Registrar IANA ID: 1600
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +34.910059090
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS1.SERVYTEC.ES
Name Server: NS2.SERVYTEC.ES
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-19T12:17:27Z <<<
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