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Broken Link Status Codes
Broken Link Status Codes

Every link in a website will return a status code. Typically, links with a 404 status code should be prioritized for updating.

Updated over 2 weeks ago

When a link is clicked, a web browser will receive a status code and display content based on the status code.

DubBot allows users to filter reported Broken Links based on status code. Broken links reported by DubBot will usually display a status code of 400 or greater.

DubBot uses bot technology to automate the testing of broken links. In some cases, web servers and some web pages have been programmed to refuse connection to a bot.

Often these pages will return a 401 (Unauthorized) or 403 (Forbidden) status code. While this information could be useful to some users, it may overwhelm reporting and action on actual issues. For these users, DubBot allows for filtering by status code.

Below is the list of the status codes that are reportable within DubBot.

  • HTTP_400: Bad Request

  • HTTP_401: Unauthorized

  • HTTP_402: Payment Required

  • HTTP_403: Forbidden

  • HTTP_404: Not Found

  • HTTP_405: Method Not Allowed

  • HTTP_406: Not Acceptable

  • HTTP_407: Proxy Authentication Required

  • HTTP_408: Request Timeout

  • HTTP_409: Conflict

  • HTTP_410: Gone

  • HTTP_411: Length Required

  • HTTP_412: Precondition Failed

  • HTTP_413: Payload Too Large

  • HTTP_414: URI Too Long

  • HTTP_415: Unsupported Media Type

  • HTTP_416: Range Not Satisfiable

  • HTTP_417: Expectation Failed

  • HTTP_418: I'm a Teapot

  • HTTP_421: Misdirected Request

  • HTTP_422: Unprocessable Entity

  • HTTP_423: Locked

  • HTTP_424: Failed Dependency

  • HTTP_425: Too Early

  • HTTP_426: Upgrade Required

  • HTTP_428: Precondition Required

  • HTTP_429: Too Many Requests

  • HTTP_431: Request Header Fields Too Large

  • HTTP_451: Unavailable For Legal Reasons

  • HTTP_500: Internal Server Error

  • HTTP_501: Not Implemented

  • HTTP_502: Bad Gateway

  • HTTP_503: Service Unavailable

  • HTTP_504: Gateway Timeout

  • HTTP_505: HTTP Version Not Supported

  • HTTP_506: Variant Also Negotiates

  • HTTP_507: Insufficient Storage

  • HTTP_508: Loop Detected

  • HTTP_509: Bandwidth Limit Exceeded

  • HTTP_510: Not Extended

  • HTTP_511: Network Authentication Required

  • ERRNO_ECONNREFUSED: Connection refused

  • ERRNO_ECONNRESET: Remote host reset the connection request

  • ERRNO_EMFILE: Too many open files

  • ERRNO_ENOTFOUND: No matching DNS record found

  • ERRNO_ETIMEDOUT: Connection timed out

  • ERRNO_EPROTO: Protocol error

  • BLC_CUSTOM: Custom Exclusion

  • BLC_EXTERNAL: External URL Exclusion

  • BLC_HTML: HTML Exclusion

  • BLC_INTERNAL: Internal URL Exclusion

  • BLC_INVALID: Invalid URL

  • BLC_KEYWORD: Keyword Exclusion

  • BLC_ROBOTS: Robots Exclusion

  • BLC_SAMEPAGE: Same-page URL Exclusion

  • BLC_SCHEME: Scheme Exclusion

  • BLC_UNKNOWN: Unknown Error

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