| 200 | OKHealthy | The destination responded successfully. | No action needed. |
| 204 | No contentHealthy | The request succeeded without a response body. | Confirm an empty response is expected. |
| 301 | Moved permanentlyRedirect | A permanent redirect points to a new location. | Replace the source URL with the final URL. |
| 302 | FoundRedirect | A temporary redirect points elsewhere. | Review whether the redirect should be permanent. |
| 307 | Temporary redirectRedirect | Redirect preserves the original request method. | Verify the temporary destination. |
| 308 | Permanent redirectRedirect | Permanent redirect preserves the request method. | Update links to the final destination. |
| 401 | UnauthorizedRestricted | The page requires valid credentials. | Check authentication or test while signed in. |
| 403 | ForbiddenRestricted | The server understood but refused the request. | Check access rules, bot protection, or allowlists. |
| 404 | Not foundBroken | No resource exists at this address. | Restore the page, redirect it, or remove the link. |
| 410 | GoneBroken | The content was intentionally removed. | Remove or replace every link to this page. |
| 429 | Too many requestsWarning | The destination is rate limiting checks. | Reduce concurrency and retry later. |
| 500 | Internal server errorServer error | The destination failed while processing the request. | Check destination logs and retry after a fix. |
| 502 | Bad gatewayServer error | A gateway received an invalid upstream response. | Inspect the proxy, CDN, or upstream service. |
| 503 | Service unavailableServer error | The destination is temporarily unavailable. | Retry after maintenance or recovery. |
| 504 | Gateway timeoutTimeout | A gateway waited too long for its upstream. | Check upstream latency and timeout settings. |
| N/A | DNS failureNetwork | The domain could not be resolved. | Verify the hostname and DNS records. |
| N/A | SSL issueSecurity | TLS validation failed or the certificate expired. | Renew or repair the certificate chain. |
| N/A | TimeoutTimeout | The destination did not respond within the limit. | Retry, then inspect origin performance. |