![]() ![]() ![]() ![]() Public IP addresses are activated based on autonomous systems, which is a logical grouping of network prefixes for different Internet Service Provider (ISP) serving in various geographical regions. The rules governing the use of private IP addresses are defined in the RFC 1918, which is the Internet Engineering Task Force’s (IETF) specification, for maintaining the requirements for all protocols used for communication over the Internet.Ī public IP address can be in any range within 0.0.0.0 to 255.255.255.255, barring the private IP address, the localhost address, and a few reserved ones. Private IP addresses have a pre-defined network prefix series, starting with 10, 172.16 to 172.31, and 192.166. It does not need the consent of IANA or third-party organizations. Private IP addresses are allocated by the network administrator of the LAN. These addresses are assigned by the Internet Assigned Numbers Authority (IANA), a non-profit, standards organization that regulates and oversees the use of public IP addresses. Public IP addresses are allocated to internet service providers, which then lease them to internet subscribers. ![]() Here are a few differences between public and private IP addresses. Major Difference between Public and Private Addresses It is akin to the use of public telephone numbers on the telephone / mobile network viz-a-viz, a local extension used to reach a phone connected to an office PBX or intercom. This distinction arises because the Internet is considered a public network, whereas a local area network is considered a private network belonging to an organization or a home. The three commands that you saw above were the private IP addresses of the computer. A private IP address identifies a device on an intranet of a local area network. Therefore, any other device on the Internet can reach out to the device configured with a public IP address. Let’s understand this from a layperson’s perspective.Ī public IP address is an address that identifies a device over the Internet. Generally, IP addresses are of two types. ![]()
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