511

Network Authentication Required

Description

Indicates that the client needs to authenticate to gain network access. This is often used by captive portals (like public WiFi networks) to require authentication before allowing internet access.

HTTP Status Codes Details

Status Code
511
Status Name
Network Authentication Required
Class
5xx
Common Usage
No

Common Scenarios

  • Server-side errors
  • Service unavailable

Handling Recommendations

  • Implement retry logic
  • Monitor server health

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Fact-checking completed

Verified by: Pavel Volkov
Created:
Last updated:
Information verified against official sources

Official Sources

Internet Engineering Task Force RFCs

Official HTTP status codes specification (RFC 7231)

Internet standards organization defining HTTP protocols

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Comprehensive HTTP status codes documentation

Authoritative web development documentation

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Internet Assigned Numbers Authority

Official HTTP status code registry

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