What is my IP Address?

Your IP address is:
    54.205.210.125

Your IP number is:
    919458429

And your host name is:
    ec2-54-205-210-125.compute-1.amazonaws.com

What does that mean? Your IP address (Internet Protocol address) is a unique label assigned to whatever device you're connecting from (your computer, your iPhone, etc.) that is sent to each website that you visit. The websites each have an IP address too that your browser uses to route you to the correct content. Just like addresses in the real world, IP addresses are a way to organize and find information. Also like in the real world, they are used as a way of identifying people. So, just because you don't type in any data to a website, don't assume that its owners don't know who you are – they at the least know your IP address.

Where does my IP address come from? Your IP address is assigned by your Internet Service Provider (ISP). Sometimes they are static, but sometimes your ISP has you connect from an IP pool so your address will be constantly changing. As a general rule, even if you have a static IP, it's not a good idea to rely on it staying the same too much – your ISP can change it whenever they want and most of them do at least every couple of months.

Will we run out of IP addresses? Yes and no. Your IP address (54.205.210.125) is an IPv4 address. There are only approximately 4.3 billion available addresses under the IPv4 system and they're being used up fast. So, the smart guys who run the internet have developed a new system called IPv6, which is already being used in some places and will be used across the board soon.

What's an IP number? Your IP number is simply the decimal format of the IP address you're more used to seeing. In other words, the 32-bit decimal number equivalent of 54.205.210.125 is 919458429. To see how we calculated that, visit our Convert IPv6 Address to IP Number with PHP article. There's a simple PHP function there that you can copy and use on your own site.