IP Address Lookup
A private IP address (also known as a "local IP address") is an internal address that is not routed on the internet and that only works within a local area network, unlike a public IP address which is a computer's "passport to the internet" and it is used to communicate outside the network.
From an Internet Service Provider's (ISP) perspective, one of the original reasons for using private IP addressing after allocating address blocks of public IP addresses from an RIR was the conservation of IP address space. Public Domain Name System (DNS) database records are usually not allowed to reveal private IP addresses.
Both public IP addresses and private IP addresses help to uniquely recognize a machine connected to the internet. The differences between the two are:
The fact that private IPs aren't directly linked to outside networks (internet included) leads to the following advantages:
The Internet Assigned Numbers Authority (IANA) reserves the following private address ranges for in-house subnetting use through a router or other Network Address Translation (NAT) devices:
Both IPv6 and IPv4 specifications define private IP address ranges and address allocation for private internets. Most home and business routers worldwide have 192.168.1.1 IP address ranges that assign IPs like 192.168.1.2, 192.168.1.3, etc., to the various devices connecting to it via Dynamic Host Configuration Protocol (DHCP).
Establishing the type of IP, that's best for you or your corporate network depends on your specific circumstances (personal/business) and the importance you give to internet connectivity. There could be several scenarios: