Find a websites ip adress

If I want to know the IP address of a website, then one way is to ping the website.

For example, if I want to know the IP address of google. So But suppose I want to know the IP address of superuser.

How to find IP address of a website?

So what does JqueryLearner need to do in order to find out the correct IP addresses for websites? Your starting assumption is that all websites can be accessed via their IP address directly. This is not the case. For example, if you request superuser. It looks like this:. This is why a single web server can host multiple websites using a single IP address. If you are trying to work around an issue with your DNS provider, then one option you have is to modify your hosts file so that you are resolving addresses yourself, rather than have an external party do it for you.


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This way, if you type superuser. To get the IP address of a website, the best way is to use the nslookup command. For example:.

Step 1: Find the IP Address

If you wonder why you cannot visit SuperUser directly using the IP address The SuperUser site disallows user visits via IP address. In Apache , you can host many websites using just one single IP address. This is called virtual hosting. It's how subdomains can be created, even standalone domains. An example HTTP server that has two virtual hosts, example1. In both cases, two virtual host records are created internally in memory and used by Apache to compare against when a URI request arrives.

When a user types in the IP address via a user agent, the first virtual host listed in the configuration file is used as the primary domain i. These days it can take up to 24 hours.

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When one is found, the document root is used to form the full filesystem path to the object resource to return back to the user agent. If not, a HTTP is sent along with any error document associated with it. You can quite easily send a letter to a house without a name on it and it'll arrive at the house. When you specify the site, i. People want to allocate multiple hostnames to the same web server and serve different content for each hostname.

This is known as virtual hosting not to be confused with the more recent concept of virtual machines. Initially virtual hosting was done by allocating multiple IP addresses to the server, the sever could then send different content based on the IP address used, but this was seen as wasteful. Therefore the "host" header was introduced, initially as an extension but then later made a mandatory part of the http 1.

This header specifies the hostname the client asked for. The server can then serve up different content based on the value of the header. To keep costs down for web servers, a lot of web servers host multiple websites. So if you go directly to the website's IP Address, you will most likely get an "Apache is working" screen, or possibly even get redirected to the web server's main website.

A Vhost looks at the incoming website address and compares it to the ServerName or ServerAlias names in the enabled Vhosts files.

How are websites located on the Internet? : The Computer Studio

If one of them matches, that specific website is loaded. Another reason for doing this is the lack of IP addresses. There simply isn't enough IPv4 addresses remaining. Even when IPv6 becomes main stream, servers will probably stick to Vhosts server costs. What happens is that the hosting company rents a single IP address that points to a physical server, then hosts thousands of websites on that IP address using the "virtual host" feature. Think like a P. Box, if you just write down the post office address but without the box number, the mail won't be delivered.

There's a lot of answers here with technical detail, but I think the simplest high-level explanation is that even if a web server is properly listening for http traffic on it's IP address, the server must usually also be configured to answer for a particular domain name, and that name must be in the request sent by the client i. I say "usually" because it's almost always done this way, but there are in fact methods where you can setup the http server to answer if only the IP address is used. Try this, which is the Dedicated IP address of a site that I own, www.

Home Questions Tags Users Unanswered. Why does typing an IP address instead of the corresponding domain name not show the website?

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What Is the Difference between Authoritative and Recursive DNS Nameservers?

As a rule of thumb, humans should never use IP addresses, unless configuring an actual server. Worth emphasizing that you did get a response from the server: a HTTP response. This means that it successfully found the host the computer on the other side and some web server I'd guess something open source running on Linux, like Nginx running on that host sent back data. Peter Mortensen 2, 5 5 gold badges 22 22 silver badges 24 24 bronze badges.

Could someone expand a little on what Host does and what web servers generally use it for?