We have seen in this chapter that the network parts of IP addresses identify the owners of IP address blocks. Use the WHOIS search facility at the American Registry for Internet numbers (http://www.arin.net) to search the WHOIS database and identify the owner of the address block to which your IP address belongs. You can do this by visiting http://www.arin.net typing in your IP address into the search WHOIS field on the site press enter or click the button next to the search field. (Please see Figure 4.19 for reference.) Follow the link to the related organizations POC records just below the table to gather information on the following fields associated with your IP address:

a. OrgName

b. NetRange

c. NetType