Every time someone requests a webpage or sends emails, a part of the information includes the IP address. At the other end, the recipient can see the IP address of the one that sent an email or requested an HTML webpage.

In short, the role of an IP address is characterized as a name that indicates what we are looking for, an address where one can be able to locate it, and the route that one needs to get there, without any further hassle.

The original designers of the IP address came up with a 32-bit Internet Protocol version 4 (IPv4), which is still widely used today. But due to the huge growth of the Internet, they have developed a new addressing system, the 128-bit Internet Protocol version 6 (IPv6).

An IP address specifies the locations of the sources and destination nodes of the routing system. This is why some of the bits in an IP address are used to comprise a subnetwork. An IP address may be private for use on a Local Area Network (LAN), or for the use on the Internet thus making it public.

The Design

The IP address was earlier intended to be uniquely designed for a single computer or device but this isn’t always necessary, since some private networks create their own addresses. Besides, some technologies redesigned their system to be able to allow multiple hosts for a single address but its place depends on the request of the clients in the network.

More Info

In an isolated network, one can assign an IP address at random as long as each one is unique but if one is about to connect to a private network, a registered IP address is needed so as not to be hassled with duplicates.

In the early stages of Internet protocol, the administrators interpreted IP address as a structure of host and network number.

The Parts

The IP address has two parts, which is the identifier of the particular network and the device within that network. On the Internet though, especially when administrators ping IP, only the network part is important because it is the only one that is looked at.

The Classes and Their Formats

Networks vary in size and that is why there are four formats of IP addresses:

• CLASS A addresses are for large networks with many devices
• CLASS B addresses are for medium sized networks
• CLASS C are for smaller networks which have fewer than 256 devices
• CLASS D are multicast address

The address class format is indicated by the first few bits of the IP address itself.

Usually, the IP address is written as four decimal numbers each of them representing 8 bits and is separated by periods. This form is more technically known as the dotted quad notation.

To put it bluntly, an IP address is a 32-bit number that identifies either the sender or receiver of certain information. When you use the command ping IP, this is usually sent in packets that pass through routes across the Internet.

If you need more information about a certain IP address like when you want to ping IP address, you can check out Network-Tools on the Internet. They have various online network tools to help you with network solutions.

Increasing the TTL (time-to-live) value of all the packets that have been sent is how traceroute works. The first three of the packets one has sent has the value of one TTL and the successive group of three’s has a value of two and so on. When packets pass through a host, it decrements the TTL by a value of one and forwards it to the succeeding host. When the first group of packets reaches a host, the host then sends back to the sender an ICMP time exceeded (type 11).

The traceroute utility uses the returning packets and then makes a list of where the packets passed en route to their destination. It may not list down the real hosts. It just indicates that the host of the first packets is at one hop, the next at two hops and so on. Internet Protocol (IP) does not guarantee that all batches of packets take the same route.

Traceroute can usually opt to specify the use of ICMP echo request (type instead of ICMP type exceeded. Another version of traceroute is MTR (My Traceroute). It is available for both Unix and Windows systems. Traceroute and all its other implementations rely on ICMP (type 11) packets that are being sent from its origin.

Important Uses

It is often used for troubleshooting. It allows the sender of the packets to identify the route it has taken to reach its destination on the network. It can help in identifying firewalls and anything else that may block access to sites. Traceroute is also used to gather information about a networks infrastructure and ping IP ranges that surround a given host. It may also be used in downloading various kinds of data, and if it is found out that there are multiple routes that can be taken for the same piece of data, one can be able to trace which one will be the fastest to take.

Traceroute and Its Other Forms

• Layer Four Traceroute (LFT). This is one of those fast traceroute engines. It also has a number of other features, which include AS NUMBERS that lookup through various sources that are reliable, netblock name lookups, and loose source routing. It goes through various configurations of packet filter-based firewalls. The LFT command was first seen in 1998, but it was then known as fft. It was renamed to lft to avoid confusion with fast Fourier transforms (fft)
• My Traceroute (MTR). It is a computer program that combines the traceroute and ping IP functionality in the same network diagnostic component. MTR tests routers on the path by limiting the number of hops by which each packet may traverse. It regularly repeats this process and keeps a record of response times and hops.

My traceroute is under the license of GNU General Public License (GPL) and works under modern operating systems.

It relies on ICMP time exceeded (type 11) text packets that are back from their routers. It sometimes uses ICMP Echo reply packets once they have already reached their destination.

Basically, traceroute lets the sender in on what path the packets they have sent take. It also allows the sender to choose the fastest route if the packets have more than one option on which it may traverse.

Know more about how a traceroute works and its relationship with terms such as Ping IP , LFT, MTR, and the likes at Network-Tools. A good knowledge of these systems will give you a better outlook on networking and computer programming.

It is a method of translating computer addresses so computers can find each other. It translates a numerical address that is assigned to a computer into a certain sequence of words.

Domain Name System which can also go as Domain Name Service or Server is basically defined as an Internet service that can translate domain names into IP addresses. Each time a domain name is used, a DNS server must change the name into its corresponding IP address.

The DNS server stands alone. It is actually its own network. Once a DNS server fails to translate a certain domain name, it asks another one until it returns the correct IP address. In computing, the type of protocol used by a DNS server is the name service protocol. It will usually map a host that can be easily recognized by us humans to another identifier that machines can recognize.

Implementation

The Internet largely depends on the DNS server protocol. Without it we wouldn’t have the dot-coms, dot-orgs, or dot-nets. A DNS server governs the domain name system’s records, namely:

• A – host records
• CNAME – aliases records
• MX – mail exchange records

All for a domain name.

People and the Internet

Sending emails or just simply browsing the web implements the use of a DNS server. This part of the Internet may be completely hidden but it is an extremely important part of it. The largest and most active database is formed by no less than the DNS server. Without the DNS server, there could be a possible Internet shutdown. Every time a domain name is used by the one accessing the Internet, the DNS server is automatically used so that the information that is readable to humans is translated into an IP address that is readable by the machine.

The Importance

Basically, the DNS server translates information and converts it into an IP address. This may sound simple but it can be complicated because of the following reasons:

• Currently, there are a billion IP addresses in use, and most machines have human-readable names.
• There are billions of DNS server requests sent every single day. One person can make about a million DNS server request per day. To top it all, there are about a billion people using the Internet each day. Do the math.
• Both domain names and IP addresses change daily and new ones are created at the same rate also.

A DNS server contains a database that can be accessed in its own network. Of all the databases in the world today, it is the only database with millions of requests by millions of people every hour.

The IP address

In order to keep everything in the Internet organized, each computer or any other electronic device that connects to the Internet or any network has its own IP address. DNS servers can provide the right information as long as the IP address is included with the request. Without the IP address, there is no return address for the information requested.

A server always has a static IP address so that it makes it easier for other machines to locate it. Although there are some systems that change their IP address, other machines can still locate them as long as they have set up their DNS servers properly. A modem, which is usually found in house computers, has an IP address that is assigned every time you dial in. The IP address is unique for every session and no two can be the same.

If you are trying to connect to a DNS server but you’re encountering some difficulty, you can check if it exists with the various tools at Network-Tools. As long as you have the IP address of the server, troubleshooting will be a breeze.