What are the HTTP response codes when retrieving URL information
No response received (0-99)
Informational responses (100–199)
Successful responses (200–299)
Redirection messages (300–399)
Client error responses (400–499)
Server error responses (500–599)
Common Codes
0 indicates no response received from the url / website 200 indicates a successful response received from the url 404 indicates the page is missing 500 indicates the page generated an error on the server side