How This Website Works? provides common networking tools for daily interactive use.

All networking tools provided by can be used daily for free! No membership or logins are required.

If you are unfamiliar with these tools and want to understand how it works, we always show the assigned IP address of the person that is currently viewing our pages. As a quick access to your IP address' information you can click on the IP address on the right or enter an IP address at the search form at the top to execute a look-up for the IP address and see the information available for this internet resource.

What is an IP Address?

An IP address (Internet Protocol address) serves as an identifier of a computer or device within a TCP/IP network. The IP address is written using four numbers separated by periods and follows a 32-bit numeric format. Each number can be any value in a range of 0 to 255.

The four numbers in an IP address are used in different ways to identify a particular network and a host on that network.

There are 4 regional Internet registries: ARIN, RIPE NCC, LACNIC and APNIC , which assign Internet addresses from the following three classes.

  • Class A - supports 16 million hosts on each of 126 networks
  • Class B - supports 65,000 hosts on each of 16,000 networks
  • Class C - supports 254 hosts on each of 2 million networks

The number of unassigned internet addresses is running out, so a new classless scheme is slowly being adopted to substitute the normal assignment system, which is called CIDR.