curlhub.sh/status — explain an HTTP status code

Usage:  curl curlhub.sh/status/{code}   (100–599)
Example: curl curlhub.sh/status/418

Common codes:
  200  OK
  301  Moved Permanently
  400  Bad Request
  401  Unauthorized
  403  Forbidden
  404  Not Found
  429  Too Many Requests
  500  Internal Server Error
  502  Bad Gateway
  503  Service Unavailable