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 - is45.com
HTTP Status: 401
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Sat, 10 May 2025 16:47:16 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
cf-cache-status: DYNAMIC
Vary: Accept-Encoding
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=2GNcQdxp0JDNuB02P1v3UMzIsUbuHc1aJ%2BbD5joC7kzB%2FQvGl8mALAP%2Bm6%2B479FeINesY8TlL21suYqrSUaRg02NMzOXuaYMpzTVnSYizf%2FFVlys37CRohlERDMfw09AS%2FBv4hHvPw%3D%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Server: cloudflare
CF-RAY: 93daeae028c68f5d-CPH
alt-svc: h3=":443"; ma=86400
server-timing: cfL4;desc="?proto=TCP&rtt=16549&min_rtt=16549&rtt_var=8274&sent=1&recv=3&lost=0&retrans=0&sent_bytes=0&recv_bytes=164&delivery_rate=0&cwnd=249&unsent_bytes=0&cid=0000000000000000&ts=0&x=0"

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: is45.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

404 Not Found

Whois info of domain

Domain Name: IS45.COM
Registry Domain ID: 2971412063_DOMAIN_COM-VRSN
Registrar WHOIS Server: www.gname.com/whois
Registrar URL: http://www.gname.com
Updated Date: 2025-04-07T04:12:38Z
Creation Date: 2025-03-31T18:11:44Z
Registry Expiry Date: 2026-03-31T18:11:44Z
Registrar: Gname 061 Inc
Registrar IANA ID: 4053
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +65 31581391
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: ADAM.NS.CLOUDFLARE.COM
Name Server: LANA.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-10T16:47:06Z <<<
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