Public ip address is assigned to every device which is connected to internet. Public Internet Protocol address also shortly known as public ip. If you are searching for your public ip address to test open ports or any other reason. Here you can find your public ip within fraction of second.
Every device connected to internet has a public ip address. Whether it is mobile, tablet, pc, desktop, server or router. Through this pubic ip address you can access your device which is connected to internet. If there is any service running on a server having open port and that port is open for public access then you can access that service through its public ip. So now you are looking for your public ip address.
If you are searching for my public ip address on internet and reached at this page. Then you have to do nothing more. This page will show automatically your ip address here at the top of the page. Keep in mind that public ip address is only assigned to devices, which is connected to internet. Without internet connection there is no public ip address.
There are two types of public ip address. One is ancient IPv4 and IPv6. IPv4 is 32-bit number address and IPv6 is a 128-bit number address. IPv6 being used in real world due to shortage of unique public ip address in IPv4. Still IPv4 is widely used by all systems and servers. So it's important to keep an eye on your public ip address.
There are two types of public ip address assigned by Internet Service Providers. One is static and other is dynamic. The static IP address is reserved for you by Internet Service Provider. Even if you disconnect your device from internet connection and reconnect to that internet connection after sometime or anytime you will get the same previous IP address as your public ip address. On the other hand if your Internet Service Provider assigned a dynamic ip address for you. Your public ip address changes after each time you get disconnected from your internet connection. If you are looking for whether my public ip address changes automatically or not. It completely depends upon your internet service provider and the type of internet connection you are using. So check your public ip address here and then disconnect from internet. Again connect to internet using the same connection. Then check your public ip address one more time here. If public ip address changes here then your public ip address for that internet connection is dynamic. If your public ip address doesn't change here then it is static.
Public IP address are two types static and dynamic. Your public ip address will be static or dynamic, it is decided by your Internet Service Provider. Some internet service provider also charges some extra for a static public IP address. Mostly Internet Service Provider provides a static public ip address with broadband internet services over lease line, cables, coaxial cable, ethernet cable, fiber optic connection. But the public ip address allocation differs from one ISP to another. Be sure to double check the public ip address by refreshing this page. If your public ip address remain unchanged after multiple times of connect and disconnect from internet. You got a static public ip address. But the scenario is different for mobile and smartphone users. If you are using internet on your mobile device or smartphone through a sim card. The public ip address allocated to that mobile device is dynamic. Whether it is a small feature phone having internet connectivity or a high-end smartphone. Cellular mobile network gives you a dynamic public ip address. This public ip address on cellular mobile network changes after every time you disconnect from internet by disabling mobile data. Also by enabling flight mode in any smartphone causes change of public ip address.
Internet service providers in all countries provides static public IP address to their customers. But the static public IP address allocation is not available in all types of internet connectivity by default. If you need a static public IP address without any headache. Just ask your local internet service provider who is providing broadband internet connection over coaxial cable, ethernet cable or optical fibre cable. This broadband internet provider will also give you a router and a static public IP address. But what if you are using mobile internet connection to stay connected with internet? If you are using mobile internet and still want a static public IP address. You can use vpn for this purpose. OpenVPN is a good one for this purpose. Reverse proxy tunneling also can give you a static public IP address.
Static public IP address is required while you are making a server online to serve content on internet. Without a static public IP address its difficult to use domain name services. So static public IP address is very important for servers, ip cameras and IoT devices. If you have a static public IP address assigned to your computer and any service running on that computer is accessible from anywhere in the world. But if you can't configure port forwarding and other running services properly on that computer or server which have static public IP address, it may cause vulnerable your machine to attackers. Add proper firewall rules to stay safe.
A dynamic public ip address changes automatically after every time you disconnect your device from internet. Mostly these type of public IP address is used in cellular mobile network. As it changes frequently no-one can access your device by your public ip address. Also your dynamic public IP address in cellular mobile network is always behind a NAT. It prevents unauthorised access of external entity.
There is some chance of unauthorised access into your local area network through this static public IP address. If your static public IP address is publicly available to anyone then there is lots of chance for bad guys to hack into your system and network. So check your open ports or port forwarding on all possible ports available for your static public IP address. Carefully set firewall for all necessary open ports and close the unnecessary ports. Regularly check for the latest security updates and patch the known vulnerabilities.
There are many reasons for which dynamic public ip address is being used in cellular mobile network. Probably this is for security reason.
Commonly cellular mobile network allocates dynamic public ip address to internet users. But if you need a static public IP address on your mobile internet use a dedicated vpn server. OpenVPN is a good one for this purpose. Reverse tunneling proxy also can give you a static public IP address in mobile internet.
Both the static and dynamic public ip address has its own advantages. Dynamic public IP address is good for average and below average mobile users. Those who are only use mobile internet for browsing, downloading and uploading static public IP address is good for them. On the other hand techie guys who want to host a web server on their local machine and expose it to internet. They will need a static public IP address.
Public IP address is not meant to show it publicly. It is necessary when you want to access your machine over internet. It means if any bad guy got your public ip address, then there is chance of being compromised. So keep your public ip address confidential.
127.0.0.1 is the ipv4 of loopback interface also known as localhost in every linux machine.Blogs Home