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 - ikkku.com
HTTP Status: 401
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Server: nginx
Date: Sun, 18 May 2025 03:52:20 GMT
Content-Type: text/html
Content-Length: 2784
Connection: keep-alive
WWW-Authenticate: Basic realm="Member Site"
Last-Modified: Tue, 25 Jul 2023 10:41:52 GMT
ETag: "ae0-6014d61082f8a"

HTTP Code 401 Unauthorized

http status code 401 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: ikkku.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: IKKKU.COM
Registry Domain ID: 2749480165_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.discount-domain.com
Registrar URL: http://gmo.jp
Updated Date: 2024-12-21T16:11:03Z
Creation Date: 2023-01-06T02:35:17Z
Registry Expiry Date: 2026-01-06T02:35:17Z
Registrar: GMO Internet Group, Inc. d/b/a Onamae.com
Registrar IANA ID: 49
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +81.337709199
Domain Status: ok https://icann.org/epp#ok
Name Server: NS1.XSERVER.JP
Name Server: NS2.XSERVER.JP
Name Server: NS3.XSERVER.JP
Name Server: NS4.XSERVER.JP
Name Server: NS5.XSERVER.JP
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-18T03:52:06Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
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