How to Make a Reverse DNS Check?

Posted on April 5th, 2013 by Boyana Peeva in Tech

IP addresses

About IP Addresses

In the world wide web, the millions of computers and computerized devices communicate with each other using IP (Internet protocol) addresses. These are a combination of numbers that are unique to each Internet connection or computer, depending on the complexity of the network through which the computer gets the Internet connection.

Read more...

What Is 5xx Status Code?

Posted on March 26th, 2013 by Boyana Peeva in Tech

Ooops, 500 internal server errorWhen a web server receives a request, it returns an HTTP (Hypertext Transfer Protocol) status code in response to the request. An HTTP request may fail as a result of a network error or when the web server experiences problems executing a request. Consequently, the server returns a corresponding HTTP status code to describe the condition of the request. The status codes help in identifying the cause of the problem when a web resource fails to load properly.

The 5xx codes are Server Error codes indicating that an error has occurred while processing the client’s request.

Read more...

What is 4xx Status Code?

Posted on March 22nd, 2013 by Boyana Peeva in Tech

404 not foundThe 4xx HTTP status codes are purposed to indicate what you or your client agent may have done wrong. In any case, your client agent is required to display the error to you especially when it is related to your actions. When a HEAD request is submitted, the server does not display the error code. Instead, it acts on the request.

400 - Bad Request

This is normally due to erred syntax or inclusion of characters that the server would not understand. This request will be displayed for your purposeful response.

Read more...

What Is 3xx HTTP Status Code?

Posted on March 20th, 2013 by Boyana Peeva in Tech

300 HTTP status codesThe 3xx HTTP status codes are a class of status codes that indicate that further action by you may be required to get to the destination URL. Sometimes the web client may take some action on your behalf  if the consecutive request on the target URL is characterized by HEAD or GET. In the case where 5 consecutive URI's are all unavailable, the process is halted by most user agents to prevent a vicious cycle of redirection.

Redirect status codes are important to you because locations on the Internet are always changing, and sometimes the actions you take on the Internet may require a redirect to a new location. The request that your user agent makes may also require to return to the original URI after completing a certain step in the process. Using such codes, the web server and the user agent communicate to take you to other locations, either automatically - in mitigating errors or relocations, or basically - in responding to actionable requests.

Read more...

What Is 2xx HTTP Status Code?

Posted on March 18th, 2013 by Boyana Peeva in Tech

200 HTTP status codesHave you ever run into an annoying message ‘404 (requested page not found)’ while browsing through your website's monitoring results?

Well, that is just an example of the many HTTP status codes that exist. HTTP status codes refer to the responses a client gets from a server to a particular request. These codes are generated while a user tries to access a particular web page via a particular browser or while search engine spiders such as Googlebot make their way onto the page.

Read more...