Any IP Address that is used to access the internet is called Public IP Address. Public IPs are globally unique like the email address or house address that is completely assigned only to you so that if the information passed over the internet reaches to you and not someone else.
The Public IP address is very much different from a Private IP Address.
Internet service providers (ISPs) assigns Public IP Address that are visible to other devices on the Internet. Through this address, you can communicate with the devices on the Public Internet.
Public IP Address Range
ISPs allocate certain IP Address for Public and Private use. That’s why Private IP address is unable to access the Internet since it doesn’t exist outside the network behind the router.
The Public IP address can’t be listed below since it’s a huge sum but excluding these Private IP Addresses all are public.
- 10.0.0.0 to 10.255.255.255
- 172.16.0.0 to 172.31.255.255
- 192.168.0.0 to 192.168.255.255
Since these fall behind the router and remains as Private IP Address mostly. The default gateway of routers like Linksys, NETGEAR, Belkin, Trendnet, TP-Link, and Dlink uses Private IPs – 192.168.1.1 or 192.168.1.254.
How a Public IP Address Works
In general, a Public IP address is assigned to DNS servers, websites, broadband routers, and any devices that wish to connect to the internet directly.
Assigning 4 Billion IP addresses worldwide is a bit tough for IANA, A single organization to manage it so they simplified by assigning large blocks of IP address to RIR – Regional Internet Registries. RIR takes care of allocation of the particular regions. Totally there are 5 RIRs around the world to make sure IP Address works when you need them to work.
Normally if a customer requests for an internet connection they get an IP allocated to them.
A home user will get a single IP Address. For several IPs are valued higher are given to small office or home office. A business organization can get a range of IP address block allocated to them.
Basically, the home network doesn’t get specific IP but the ISPs assigns IP that is available in the address pool and takes it back it is unused. It is the simple way to conserve IP Addresses.
Static vs Dynamic Public IP Address
|Static IP Address||Dynamic IP Address|
|It is permanently assigned to you by your ISP and remains the same even if your computer gets rebooted.||It is dynamically assigned to your computer by your ISP each time your computer (or router) is rebooted.|
|The address remains constant. Good for web servers and other Internet servers. Map the domain name to IP address using DNS.||Requires DHCP server to obtain an IP address. Each time you need to find the IP address.|
|Expensive than dynamic IP address were ISP might charge additional fees||Cheaper than static IP address.|
|More security is needed since IP remains same and hackers might try brute force attack.||Changing IP address gives more privacy.|
How to Find your Public IP Address
Finding your public IP address is very easy but mostly you won’t be needing it but there are some cases where that Public IP is necessary.
The best source to find your public IP is Google.
Step 1: Visit Google.
Step 2: Enter ‘What is my IP‘ in the search box.
Step 3: You will get the Current Dynamic or Static Public IP. For eg- 188.8.131.52.
Learn to Hide Public IP Address
A Publicly available IP Address can be used to monitor traffic and activities a user performs by the ISPs or any 3rd party. To put an end to this data theft you can encrypt as well as hide your IP address by using a special software called as Virtual Private Network (VPN).
Never confuse a Proxy and a VPN since both might sound similar but or not one. Once connected to a VPN all the traffic goes through it and hides the actual IP from Google and shows the IP allocated to you by the VPN.