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What is ARIN?

ARIN is one of the 5 RIRs (Regional Internet Registries) responsible for the management and distribution of the Internet number resources known as IP Addresses (IPv4 and IPv6) and ASNs. ARIN serves the region comprised of the United States, Canada, and many Caribbean and North Atlantic islands. ARIN is a nonprofit organization found in 1997. The primary function of ARIN is the registration of IP addresses and ASNs to ensure global uniqueness. Registration service includes allocation. assignment, and transfer of all Internet number resources. ARIN assigns IPv4, IPv6 and ASN numbers to governments, universities, ISPs, and for-profit organizations.

What is IANA?

IANA is a standards organization owned by ICANN responsible for global allocation of IP Addresses and ASNs, management of DNS root zones, and protocol assignments. In regards to IP number management, IANA is primarily responsible for allocating a pool of unallocated IP blocks to RIRs according to the global policy to ensure fair allocation of IP addresses across the regions.

Why would you hide your IP address?

When you connect to the Internet, your ISP assigns an IP address that you can use to communicate with the rest of the world. Hiding your IP address blocks others from detecting your geolocation, access websites blocked by your government, and work around a banned IP address. However, hiding an IP address does not block advertisers from tracking you or stay anonymous online.

What is ICANN?

Internet is a part of our lives, and can no longer live without it. We use it to check our daily weather forecast, read morning news briefs, trade stocks, and listen to our favorite music on Spotify. More people are using smartphones to access the world wide web (WWW) than desktop PCs, and this trend will continue to shift toward mobile. The Internet has been around since January of 1983, and someone had to manage it.

How to find the owner of an IP Address?

Anyone who needs IP addresses can register them through RIRs (ARIN for North America), and the ownership information will become public. An IP address is a public information anyone can look up, and it can be used to find the geolocation of a host.

What is an ASN?

An Autonomous System (AS) is a large network that has a common routing policy used to serve a set of IP prefixes. An AS is assigned to a single organization and is connected to multiple ASes to route IP packets in a redundant manner. An AS is assigned a 16-bit or 32-bit number (ASN) by the IANA to Internet Service Providers (ISPs), governments, universities, and enterprises.

What is RIR?

A RIR (or Regional Internet Registry) is a nonprofit organization that allocates Internet Numbers which is comprised of IPv4 Addresses, IPv6 Addresses, and ASN (Autonomous System Numbers) within their respective regions. An IP address is a globally unique number that is assigned to computing devices to communicate with each other within a network (or Internet). ASN is a group of one or more IP prefixes that are used to define routing policy. With IP Address and ASN, IP packets are routed from one IP address to another regardless of where they are located within the world. There are 5 RIRs in the world, and their serving regions:

What is CIDR?

Before we can discuss CIDR (Classless Inter-Domain Routing), we need to understand what IP address is, how it is divided (subnetting), and what versions of IP addresses are available. Currently, there are IPv4 (version 4) and IPv6 (version 6) addresses. IPv4 was introduced in 1980, and it is a 32-bit number having a total of about 4.3 million addresses. With the prosperity of the Internet and smart devices joining the network, 4.3 million IP addresses weren't enough to connect all devices available worldwide, and hence 128-bit IPv6 address was invented in 1998. For each computer, smartphone, tablet, and IoT devices joining the Internet, the number of IP addresses available within IPv4 wasn't enough to connect all devices.

How are IP addresses assigned?

When you're connected to a network, your computer or smart device will obtain an IP address either from your ISP or your router. There are 2 ways how you can assign an IP address to your device: (1) dynamically via DHCP or (2) statically by manually assigning an IP address yourself. In either case, you must use the IP address that is provided to you by your ISP, or the IP range you allocated yourself within your private space (i.e. private IP address).

How to release and renew your IP address?

To be online, each and every computing device must have an IP Address to communicate with other devices over the Internet. An IP Address is assigned to a computing device via an DHCP server or manually assigned a static IP address. Computing devices include desktop PCs, Macs, Servers, Smartphones, Tablets, Amazon Echos, Routers, and any other smart devices that are connected to the Internet.

How to fake your IP Address and stay anonymous online?

Before we can talk about faking an IP address, we need to know what an IP address is and how it is used. An IP Address is an unique address assigned to a computing devices such as a computer, tablet or smartphone. An IP address is analogues to postal address of a house (or phone number of your smartphone), where two houses cannot have the same address as a mailman will be confused where to deliver the mail. Similarly, an IP address must be unique within the globe so that a message can be delivered to an intended device.

How to detect fraud orders with IP address?

One of the biggest challenges with online stores is detecting and preventing fraudulent orders. Fraudsters attempt to use stolen credit cards to purchase goods online, and sometimes such transactions do go through without detection. If a fraud chargeback occurs, it is the merchant's responsibility to prove to the bank that the charge was made legitimately. If you can't prove the legitimacy, the money will be withdrawn from your bank and you can't do much about it.

What is Geolocation?

Technology has come a long way and is constantly evolving every day and it's no exception with geolocation. Thanks to this, geolocation has found a very strong and everyday use in today's world. RFID (radio frequency identification) tags have come about as a result of this and function as neat little devices which can be tagged to other items that have no means of connecting to the Internet. Through this, one can then geolocate these tags and their tagged objects.

What is a Web Bug (Beacon)?

A web bug is also referred to as web beacon, pixel tag, clear GIF, invisible GIF. It is one of the techniques used in emails or web pages to check what the user has accessed. These are in most cases invisible and are used for web analytics. In most cases, web bug arrives in the form of an image and can be detected by the user only if the source code is checked. A web bug is small graphic and hence can work easily with low bandwidth or weak network connection.

How do you spy on someone's IP Address?

Most of us believe that our IP address can be tracked only by the Internet Service Provider. Did you know that there are multiple ways in which someone can spy on your IP address? Anybody knowing one of these techniques can easily reveal your IP address. To spy on your IP address, they do not need your permission. Spying on someone's IP address can be used to trace cyberbullying as well as bad intentions.

What is the private IP address?

The private IP addresses are the reserved IP address blocks that cannot be routed through the internet. Since private IP addresses are only intended to be used in private networks, they are not globally unique. The private IP address must be unique within its network (usually LAN) so that there is no conflict between two computers within its network. Due to scarce nature of IPv4 Address (i.e. approximately 4 billion IP addresses), IANA reserved private IP address blocks so that they can be used by any organization without registering them with IANA. The private IP address block can be used in homes, small businesses, or even medium and large enterprises to create their own network. Computing devices with a private IP address cannot be directly accessed from the Internet unless NAT (Network Address Translation) is used. The advanced network planning techniques have also enabled network planners to use same private IP address within different private networks thus allowing them to save valuable IP address space. A private address may also be referred to as a local IP address. It also enables to hide the identity of the users over the Internet.

How accurate is IP-based Geolocation Lookup?

By finding IP address of yourself or a person you wish to lookup, the geolocation lookup tool provide you with an estimate of where this IP address is located. American Registry of Internet Numbers, also known as ARIN, maintains the Whois Database containing contact and registration information for IP addresses. The companies requiring IP addresses obtain and register them with ARIN, and those IP addresses obtained are assigned to their users and customers. Internet Service Providers (ISPs) assign a dynamic IP address to a user when their customers connect to the Internet. Since a company may be located throughout a large region (or a country), the accuracy of geolocation may vary depending on how they assign them to their users.

How to find my computer's Private IP address?

To connect your computer to the Internet, you'll need an IP address. If your computer is directly connected to the gateway (or switch) provided by your ISP, your computer gets a public IP address from your ISP. However, if your computer is connected to the Internet via a router within your home network, your computer gets a private IP address from your router and your router gets the public IP address from your ISP. To learn more about public and private IP addresses, please read What is public and private IP addresses article.

How to get around IP Ban?

IP ban is a block setup by a server to reject request made from a particular IP or range of IP addresses. The IP ban may have been implemented automatically due to abuse pattern detected by the server or placed manually by an administrator. IP ban is implemented to protect the server from abuse such as brute force attacks, block emails from known spammers and limit usage by users. IP Ban allows a server to ban an IP address from accessing a website, forum, email or game server.

My IP address is hacked. What can I do?

Many readers of our website are contacting us for help on *allegedly* hacked IP address, and remedies for getting it back. One of the user is telling us his IP address used to be 64.3.x.y in Dallas and now it's 67.72.x.y located in Utah (per ip lookup); and hence his IP address is stolen, and his computer is running very slow and acting abnormal.

What is the difference between a static and dynamic IP address?

An IP address is an address assigned to a device on the Internet. It is analogous to postal address where a letter is delivered, and an IP address is computer's address where internet traffic is delivered. An IP address is assigned to you by your Internet Service Provider (ISP). When you signup with your ISP, your ISP either assigns you a static IP address or a dynamic IP address depending on the contract. If you need to setup a web server or an email service, you'll need a static IP address. If you are just browsing an Internet, you may just get by with a dynamic IP address.

What is the difference between public and private IP address?

A public IP address is an IP address that can be accessed over the Internet. Like postal address used to deliver a postal mail to your home, a public IP address is the globally unique IP address assigned to a computing device. Your public IP address can be found at What is my IP Address page. Private IP address, on the other hand, is used to assign computers within your private space without letting them directly expose to the Internet. For example, if you have multiple computers within your home you may want to use private IP addresses to address each computer within your home. In this scenario, your router gets the public IP address, and each of the computers, tablets and smartphones connected to your router (via wired or wifi) gets a private IP address from your router via DHCP protocol.

What is IPv6 Address?

Internet Protocol Version 6 (or IPv6) is a successor of IPv4 Address standard developed by IETF, which is designed to solve IPv4 address exhaustion problem. IPv4 uses a 32-bit numbering scheme to represent an IP address, which has an address space of 232 or 4.3 billion. IPv6, on the other hand, uses a 128-bit numbering scheme (2128) which has big enough address space for many decades to come. IPv6 is intended to replace the IPv4, but the introduction of the CIDR (Classless Inter-Domain Routing) allocation scheme in 1993 within the IPv4 prolonged lifespan of IPv4 Addresses. With the anticipation of smartphones, tablets, smart appliances, and other electronic devices joining the Internet every day, IPv4 address space will eventually exhaust. As of May 2014 per Google Statistics, 96% of Internet traffic is IPv4 and only 4% is represented by IPv6. IPv4 and IPv6 are not interoperable by design, so the transition from IPv4 to IPv6 requires a "transition mechanism" such as Stateless IP/ICMP Translation, Transport Relay, 6rd, and other IPv6 transition mechanisms to make them interoperable.

Find IP addresses of a private network

You have a private or public network with servers and workstations that are assigned static and dynamic IP addresses (either private or public IPs). You assigned them the static IP addresses due to NAT (Network Address Translation) or for public access, and dynamic IP addresses via the DHCP. Even if you kept a good record of those assigned IPs, there are times when you want to find all IP addresses of networked devices. The following procedure may be used to determine IP addresses of networked devices that are connected to your network.

What is IP Spoofing and how to avoid it?

IP Spoofing is a technique used to gain unauthorized access to machines, whereby an attacker illicitly impersonates another machine by manipulating IP packets. IP Spoofing involves modifying the packet header with a forged (spoofed) source IP address, a checksum, and the order value. Internet is a packet switched network, which causes the packets leaving one machine may be arriving at the destination machine in different order. The receiving machine resembles the message based on the order value embedded in the IP header. IP spoofing involves solving the algorithm that is used to select the order sent values, and to modify them correctly.

What is a MAC Address?

MAC, Media Access Control, address is a globally unique identifier assigned to network devices, and therefore it is often referred to as hardware or physical address. MAC addresses are 6-byte (48-bits) in length, and are written in MM:MM:MM:SS:SS:SS format. The first 3-bytes are ID number of the manufacturer, which is assigned by an Internet standards body. The second 3-bytes are serial number assigned by the manufacturer.

What is an IP Address?

The Internet Protocol Address (or IP Address) is a unique address that computing devices such as personal computers, tablets, and smartphones use to identify itself and communicate with other devices in the IP network. Any device connected to the IP network must have a unique IP address within the network. An IP address is analogous to a street address or telephone number in that it is used to uniquely identify an entity.

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