` What is an IPv4 address ? - Interlir networks marketplace
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What is an IPv4 address ?

Short introduction to internet protocol addresses IPv4 address, or Internet Protocol address, is a unique identifier that points to each device on the internet and allows them to communicate with each other in order to send and receive data. Without IP addresses, the internet would not be able to work as it does today, and most of our electronic devices would not be able to access any data online without them. That’s why understanding IP addresses, how they work, and how they are created can help you better understand the internet as a whole, especially if you’re looking to get more involved with computer networks and web programming in general.

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Let’s explain IP addresses in plain English. IP stands for Internet Protocol, which means it’s a set of rules used to identify your computer on a network. There are two main kinds of IP addresses: IPv4 and IPv6. They each have their pros and cons depending on what you’re looking for.

The good news is that most ISPs offer both versions now, so you can pick whatever one works best for your business needs. Both types of IP addresses are hierarchical; they’re broken up into four or six parts octets.

Each section represents a different part of an IP address and its relevant information. It also plays a significant role in why organizations use routing protocols to manage IP address allocation. As long as everyone uses them correctly, they work like a charm. Of course, not everyone wants to do that—or has room for that many addresses in their system yet (they’re expensive!).

So how does data get through these IP nets then? At least some internetworking protocol exists between them to make sure data gets passed along successfully. The actual process depends on how well connected everything is! This is where subnetting comes into play;

What is subnet ?

subnetwork or subnet is a logical subdivision of an IP network. The practice of dividing a network into two or more networks is called subnetting.

For IPv4, a network may also be characterized by its subnet mask, the bitmask that yields the routing prefix when applied by a bitwise AND operation to any IP address in the network.

For example, the prefix 190.21.100.0/24 would have the subnet mask 255.255.255.0. Subnet masks are expressed in dot-decimal notation.

For example, 190.21.100.0/21 is the Internet Protocol version 4 network prefix starting at the given address, having 21 bits allocated for the network prefix and the remaining 11 bits reserved for host addressing.

Traffic is exchanged between subnetworks through routers when the routing prefixes of the source address and the destination address differ.

Subnetting may also enhance routing efficiency or have advantages in network management when different entities in a larger organization administratively control subnetworks.

Subnets may be organized logically in a hierarchical architecture, partitioning an organization’s network address space into a routing structure.

IPV4 vs. IPV6 Explained

IPV4 (IP version 4) is what we currently use to connect to websites and servers, but it has a number of problems. For one, IPV4 addresses are running out. An IP address is simply an assigned number used by your computer or mobile device to access content on a network. We need new addresses because we’re nearly out of them. However, IPV6 (IP version 6) solves that problem as it can provide 2128 possible unique addresses for every human being on Earth.

What’s the difference between an IPv4 IP and an IPv6 IP?

IP stands for Internet Protocol, and in general it refers to a device’s specific location on a network. But that term can be confusing because there are two types of IPs—IPv4, which was created in 1981; and IPv6, which was only fully implemented recently. If you’ve got a device connected to your home router or office computer system, chances are you’re using an IPv4 IP address.

That being said, both versions actually fall under one category—in other words, they’re both IP addresses. The main difference between them is their size (IPv4 is 32 bits long and IPv6 is 128 bits long), but that doesn’t have much practical use for consumers yet; typically IP addresses will just look like strings of numbers separated by dots. Since most computers now support both protocols, it might not matter which type you use when browsing online.

What is the IPv4 address structure

What is IPv4 address in a computer network? All IP addresses are a series of four numbers, from 0 to 255. Each is separated by dots (periods). Each number can be any number between 0 and 255. For example, if the address is 212.168.0.0, then the first number would be 212, the second 168, the third 0 and the fourth 255.

IPv4 notation
(source: Wikipedia)

What is the IPv6 address structure

The Internet Protocol version 6 (IPv6) is the latest Internet Protocol version. IPv6 is a network layer protocol for packet-switched internetworking and provides end-to-end datagram transmission across multiple IP networks.

It was designed to replace the current protocol, IPv4, which is reaching its maximum capacity. The IPv6 address structure is hierarchical and consists of 128 bits—compared with 32 bits in IPv4. Each bit in an address represents a number from 0 to 256; if a bit is set to 1, it’s part of the address.

The protocol implementation has been separated into two layers: addressing and routing. Addressing determines where packets should be sent next; routing decides how to get there.

IPv6 addresses are eight groups of four hexadecimal digits each, separated by colons. Since each digit can represent up to 16 numbers, each group contains four or eight digits altogether. Every device connected to an IP network must have one or more globally unique IPv6 addresses associated with it.

IPv4 and ipv6 notation
(source: IEDN)

Why we run out of IPv4

Pv4’s unique addressing scheme requires that each device connected to a network be given its individual IP address. Unfortunately, IPv4 can only support 4.3 billion devices on a single network;

IPv4 can run out at any time, and Internet Service Providers (ISPs) are already running out of IPv4 addresses to give out for new customers. The world has no choice but to replace IPv4 with an alternative addressing scheme like IPv6.

Who needs to buy IPv4 and IPv6 addresses

Even if you don’t own your IP address, you can still have one assigned to you from companies that specialize in selling them. Just as businesses go out of their way to ensure people find their physical location on a map, they also want their IP address communicated clearly.

Companies buy large blocks of IPv4 addresses to distribute them among branches and other sites, so they’re easy for customers and prospective partners alike to find them online. By giving each site its unique IP number, businesses ensure their headquarters has a recognizable IP address ready when visitors look up its information online.

There a lot of different companies which need to buy a lot of IPv4 and IPv6 addresses :

  • Internet service providers
  • Hosting Companies
  • Cloud Services
  • VPN services
  • Various Internet Businesses
  • Banking and payment services

LIR and RIR

Most IP addresses are owned by LIRs (Local Internet Registry). An LIR will get IP space from RIR (Regional Internet Registry), often in blocks that are administered for private use within a geographical region. Each region keeps track of how much IP space it has available, how many accounts it has registered to assign with those spaces, and who should get what block next. ARIN is responsible for administering IP addressing space within North America, while RIPE NCC does so within Europe and Africa.

There five RIRs and each covers specific geographical regions :

  • ARIN
  • RIPE NCC
  • APNIC
  • LACNIC
  • AFRINIC
(source: IEDN)

What does Interlir with IPv4 network addresses?

Interlir.com provides a marketplace for companies to monetize their unused IPv4 address and help companies to rent and buy ip addresses online to proxy for a fair price.

Register now at https://portal.interlir.com and start business with us.

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