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Validating ip address

validating ip address-68

IPv4 addresses are usually represented in dot-decimal notation, consisting of four decimal numbers, each ranging from 0 to 255, separated by dots, e.g., network administrators interpreted an IP address in two parts: network number portion and host number portion.

Computers not connected to the Internet, such as factory machines that communicate only with each other via TCP/IP, need not have globally unique IP addresses.Each class used successively additional octets in the network identifier, thus reducing the possible number of hosts in the higher order classes (B and C).The following table gives an overview of this now obsolete system.Today, when needed, such private networks typically connect to the Internet through network address translation (NAT). This is deemed sufficient for the foreseeable future.The intent of the new design was not to provide just a sufficient quantity of addresses, but also redesign routing in the Internet by more efficient aggregation of subnetwork routing prefixes.The result was a redesign of the Internet Protocol which became eventually known as Internet Protocol Version 6 (IPv6) in 1995.

IPv6 technology was in various testing stages until the mid-2000s, when commercial production deployment commenced.

This early method soon proved inadequate as additional networks developed that were independent of the existing networks already designated by a network number.

In 1981, the Internet addressing specification was revised with the introduction of classful network architecture.

Each ISP or private network administrator assigns an IP address to each device connected to its network.

Such assignments may be on a static (fixed or permanent) or dynamic basis, depending on its software and practices. It identifies the host, or more specifically its network interface, and it provides the location of the host in the network, and thus the capability of establishing a path to that host.

I have a strong wireless connection on my laptop but when trying to connect to the internet I get told cannot display the webpage.