Use an IP address to view the server headers of any server on the World Wide Web.
Server Headers Check
Enter the URL to view the HTTP server headers response for any website on the World Wide Web. Next, enter the Captcha below the input. The Captcha ensures that you are a human, and not a bot or spammer. Once you have submitted the form, the results will display below. The results will include the following:
- HTTP Response Code
- Last-Modified Header
- Server Type
- Cookie Settings
- Any custom headers configured by the web server.
What are HTTP headers?
HTTP stands for Hyper Text Transfer Protocol. This is the method of communication for the World Wide Web. More specifically, it is the protocol that is generally used to request and download web pages and associated content. When you enter a URL into your web browser, the browser performs a HTTP request for a web page. The request by the browser includes header information, that tells the website the information needed to return the information to the browser.
Once the web server receives the request, it responds with its own header information. This gives the browser information about how to interpret the data that the web server is about to send.There are several responses a web server can provide for any particular Internet resource. The response usually begins with a status code and status description. More often than not, the ordinary response for a web page is:
This tells us that the URL we requested exists and can be returned. The "200" is the status code and the "OK" is the status description. The full list of HTTP response codes and descriptions can be viewed at the W3C Website.
How to Interpret the HTTP Server Headers
Standard HTTP headers include information that may help you troubleshoot issues with your web server. Many beginners have a difficult time when their server goes down and returns nothing more than a error code and status description. A full look at the headers can provide you with more in depth information, such as Cache and Expires Settings information.
In addition to the standard header information included with a HTTP request, servers and browsers have the ability to set their own header information. For example, FindMyIP uses Mod-Pagespeed, a server utility that helps with caching and web server performance. The Mod-Pagespeed information is included in the HTTP server header response.