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Organizations in need of IP addresses apply to these allocation centers who coordinate the allocation.

AFRINIC(African Network Information Centre): including Africa Region.

LACNIC(Latin America and Caribbean Network Information Centre): including Latin America and some Caribbean Islands.

RIPE NCC(Réseaux IP Européens Network Coordination Centre): including Europe, the Middle East, and Central Asia.

APNIC(Asia Pacific Network Information Centre): including Asia/Pacific Region.

ARIN(American Registry for Internet Numbers): including Canada, USA, and some Caribbean Islands.

Specifically, public IP addresses are coordinated by IANA(The Internet Assigned Numbers Authority）, who first allocates the different IP addresses to five RIRs(Regional Internet Registries). What are public IP addresses, private IP addresses and reserved IP addresses?

Because of the scarcity of IPv4 address, home networking devices usually use private IP and connect to public IP on the Internet through a router.

If you do not want your device uses a public IP address, you can place the device on a private network instead, and use address mapping to achieve access and enhance security.

The IP address of a device may change, and the device corresponding to an IP address may also change, they are not fixed.

Reserved IP address: There are also some reserved addresses, which are used as private IP address space or for special purposes such as internal LAN.įrom the screenshot above, you can see the different locations and utilizations of public IP address and private IP address.

Private IP address: Three IP address segments are reserved in the IPv4 address protocol as private addresses for internal use by the organization.

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Public IP address: The overwhelming majority of IP addresses are public addresses and need to apply for registration with the international Internet administrative agency.IP addresses can be classified as public address, private address, and reserved address.

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Secure, reliable, user-friendly, free planġ03.234.162.216 is an external address, which is a public IP address on the Internet, and its corresponding device can be accessed by other devices on the Internet. Most transparent and reliable VPN, cost-effectiveįast and reliable, great streaming performance

If you want to hide or change your IP, a VPN can help you achieve it. If you want to learn more about IP address, please check: What is IP address? Sometimes, dot will be replaced by space or hyphen, e.g. If any number exceeds this range, such as 103.234.162.256, it is not a correct IP address. The size of the 4 decimal numbers ranges from 0 to 255. Description of IP Address in Binary, Decimal and Hexadecimal Description of IP Address Class A/B/C/D/E and Network ID, Host IDĪ correct IP address has 4 numbers and connected by dot, such as there only 3 numbers in 103.234.162, and 5 numbers in 103.234.162.216.1, they are not correct IP addresses The number can be displayed in binary, decimal, hexadecimal, etc., as shown in the figure below, with decimal being the most common. IP address is used to identify the device that sends or receives data in cyberspace and is represented by a string of numbers. 103.234.162.216 is an IP address, it represents a device on the Internet.