Internet error code

Bloggers, posts this time I'll explain a little what the internet is the meaning of error codes?
Internet error code was actually intended to protect Internet users in the exploration of a site that is considered incompatible with the FTP. the point here is the site of SEO are not yet qualified, then the user is redirected to a tangible command code. The code that often arises is:

400 This is a bad request error, First check you may be typing wrong URL name and server Could not Understand your request.  

• This is a bad request error, First check you may be typing wrong URL name and server could not understand your request.

401: You are Trying to access unauthorized sites or pages. Check your username and password if you try to open any webpage.  

• You try to open any unauthorized access to sites or pages. Check your username and password if you try to open any webpage

402: Payment Required Error  

• Required Payment Errors.

403: You try to open a forbidden page and you're blocked by the domain.

• You try to open a forbidden page and you're blocked by the domain.

404: Here you try to open a web page That has been deleted or re - named, also check the spelling of the URL.  

• Here you try to open a web page that has been deleted or re-named, also check the spelling of the URL.

408: This is a time-out error. You must send a request with the time set for your server.

• This is a time out error. You must send a request with the time set for your server.