![]() You’ll be using the public IP address of whatever network you’re on. ![]() A final word: Wi-Fi.įinally, remember that every time you use a laptop computer on a different Wi-Fi (wireless) network, you’re switching IP addresses. Instead, you’re simply automatically assigned a dynamic IP address that’s available when you move. If you decide to move across town, you can still keep your ISP, and they don’t have to go through the hassle and account work of rerouting your “permanent”/static IP address. But there was an occasion when it did-when I switched routers.ĭynamic IP addresses make it easier for your ISP if you’re an ordinary computer user. For instance, as I write this article, my dynamic IP address hasn’t changed over the past three months. Most of the time, you’ll find that your IP address doesn’t change…even though technically it is classified as a dynamic IP address. (The IT departments can distinguish the computers on their network in other ways.) That also allowed static IP addresses to be reserved for businesses and other entities with large networks that didn’t want the hassle of tracking different IP addresses for their companies. In essence, that IP address is borrowed or “leased” to you whenever you go online. That allowed ISPs to provide their subscribers an IP address that might change if needed. So the Internet world introduced the concept of dynamic IP addresses. And with the current generation of IP addresses (technically called IPv4), the number of static IP addresses would have run out fairly quickly. Assigning a permanent, static IP to every ISP subscriber would have been very expensive when you take into account all the logistics involved. Some people are on the Internet often, others only now and then and sometimes for just a few minutes to send an email.Īs mentioned earlier, everyone who is online needs a unique IP address. There are millions and millions of computer users everywhere around the world and they are connected to the Internet at any one time. (Not that it will, but it can.) If it weren’t a dynamic IP address, it would be referred to as a static IP address…unchanging. Make a note of the IP address-but don’t get too attached because most likely, your ISP is called a dynamic IP address, which means it’s subject to change on you. It’s almost “plug and play.” About “your” IP address.Īnd one of the first things you might do with a new connection is to see what your new IP address is. Your computer’s networking hardware, your modem and the entire TCP/IP networking software built into your computer sorts it all out. That is, technology is so sophisticated these days, it doesn’t take too long to get everything working, and it doesn’t take too much effort on our part. Luckily for most of us, all of this technical stuff happens in the background.
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