Your ISP

Router

RouterDNS

DNS

Facebook Server

Router

2. ISP receives the request for Facebook.com.

1. ISP gives your computer an your IP address.

3. DNS translates http://www.facebook.com to 66.220.158.25

4. Router tries to find the quickest way to 66.220.158.25.

7. DNS translates 66.220.158.25 to http://www.facebook.com.

6. Facebook tries to find the quickest way to your IP address.

5. Facebook receives the request for the homepage.

You see the Facebook homepage:

http://www.facebook.com.

You type http://www.facebook.com.

8. Router tries to find the quickest way to your IP address.

9. Your request is returned.