IP Address Definition

John   December 7, 2016   Comments Off on IP Address Definition is a quite popular default router IP address today and for that reason, in the following few paragraphs, we are going to discuss more about it.

What exactly is network addressing, or for that matter, network addresses?

A network address is defined as being an identifier for a network interface or a node within a telecommunications network. These addresses are most frequently planned as being exclusive on the network, albeit certain networks take into account local or relative addresses that may not be unique. Furthermore, more than one sort of network address can be utilized in a single network. Some examples of network addressing are the following: a phone number in a public switched phone network, an IPX address within a local network, an IP (Internet Protocol) address on the Internet, a MAC address within an Ethernet network section, as well as an X.25 X.21 address on a circuit-switched data network.

So how are network addresses structured?

Internet Protocol version 4 addresses (IPv4) consist of four octets which are divided by dots (and this is named a dotted decimal notation). The definition of an octet is that it is a byte which consists of eight bits. IP addresses have 2 parts: a network ID, as well as a host ID.

However, there are network addresses for private application, but what does this entail?

These are the network addresses which are set aside for private application or use by IANA (short for the Internet Assigned Numbers Authority) that can be concealed on a device using the Internet Protocol which pretends to link the private network and the Internet, and there are 3 sets of these addresses, as follows: 1. 10.X.X.X, 2. 172.16.X.X – 172.31.X.X, 3. 192.168.X.X.

The other addresses which are reserved or frequently used are the following:

• – An address set aside for those hosts who have no knowledge of their addresses; in fact, they utilize DHCP and BOOTP protocols in order to establish the addresses which they are using.

• – These are the so called loopback interface addresses. Every 127.X.X.X address is used by a loopback interface that duplicates data from the transmit to the receive NIC buffer when it is being used.

• 255 – This value is in no way used like an address as a component of other Internet Protocol addresses. It is, in fact, kept back for broadcast addressing. Also, it is important to say that it is unique for CIDR (also, while utilizing CIDR, the parts of the address cannot ever be 1s).

What are some examples of in/valid addresses?

Here are some examples of valid/invalid addresses:

– Valid addresses:;;
– Invalid addresses: – the IP host IP cannot be 0; – the IP host IP cannot be 255; – there is no subnet or network which has a 255 value; – there is no network for a Class A network with a 0 address; – there is no network address which is 255; – there is no network address which is 255.

And what about the address which is our main topic – the Internet Protocol Address?

This is how this IP address ( is defined: this is a so called default address which serves specific sorts of routers used for the network, as well as a number of Cisco’s routers. Also, private network servers use this default address as well. As a matter of fact, computers of other devices are usually given entry via the pathway on a Web browser. It is necessary to say that this is an address that is frequently depicted as a default gateway address. Namely, it commonly represents the local segment of a router link with the Internet. Also, this address is habitually used for business networks and not private homes (considering that routers with a default address in the 192.168.X.X range are usually used in private homes). Both 10.X.X.X and the 192.168.X.X sequences are what is called private Internet Protocol address ranges.


Is there anything else to say about this IP address?

We may have mentioned that the IP is what is called a default gateway address, which means, in short, that it is an Internet Protocol address that is habitually utilized as a default IP address for specific network routers. For example, the IP address is employed by Comcast Wireless Gateway devices which are are used for joining wi-fi networks and standard cable modems.

And in conclusion:

Because the address is, as it has been already mentioned, a default gateway address, and the address cannot be assigned to network devices as a local IP address. As a rule, an appliance or device on the network possesses a variation of the default gateway address where number 4 is substituted. This is an instance of this: probably, the first computer connected to this router shall be assigned the address. Therefore, this IP address sequence that is allocated can be altered in the router’s settings.