What Is An IP Address?
An IP Address is a unique identifier address assigned specifically to a particular device. With this address, computers or devices that do the same work are identified on the network and can communicate with other devices over the internet. This communication can only occur between mobile phones, tablets, PCs, desktop computers, laptops, printers and other devices that support Internet Protocol (IP).
IPv4 and IPv6 Formats
IP addresses can be in two different formats, IPv4 and IPv6. The IPv4 format is 32 bits; these are addresses that have been used since negative times, such as 18.104.22.168, and even since the beginning of the Internet. Addresses similar to 2001:0db8:85a3:0000:0000:8a2e:0370:7334, a more recent IP type of 128 bits, are called IPv6.
Private vs. Public Address
You should know between private IP addresses and public IP addresses. Private IPs cannot be accessed from the Internet but are only used on internal networks, such as your desktop’s IP.
Simply put, public IP addresses are addresses that can be accessed by all users around the world over the Internet. In its most common use, a public IP address can be the IP address of a website.
Google.com uses 2a00:1450:4006:801::200e as one of its public address.
Local IP Address
A Local IP address is the identifier (IPv4 or IPv6) that is appointed to your workstation, PC, versatile and some other gadget within your nearby network. It isn’t noticeable to the external world, however it is required so as to utilize the internet.
These IP Addresses are assigned only by a protocol called DHCP (Dynamic Host Configuration Protocol).
How Did We Find Your Local IP Address?
In the past, it was very difficult to find a local IP address connected to the Internet. Fortunately, some applications nowadays can easily find a local IP address.
What Is The Role Of A Local IP Address?
Our router, which we use to connect to the Internet at home, assigns a unique IP address to each connected device. When we search for a website:
- The request sent reaches our router directly to its IP Address assigned by the Internet Service Provider (ISP).
- In the next step, this request comes directly to the router.
Suppose a response came from the website, but how does an ISP know where to send this request back?
- Your router will forward this request back to your home router, depending on your Router IP.
- Then, the router device you use at home is based on the local IP Address and transmits the information to your device.
The process of converting IP addresses between private IP addresses and public IP addresses is known as Network Address Translation (NAT).