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These IP addresses, for the most part, are only visible inside your home network. This category can be separated further into wireless and wired connections. The connection can be to a laptop, desktop computer, printer, phone, etc. Each connection to a device inside a network has its own address. Internal or local IPs are assigned within a network (like the one your router manages in your home). We will be using different methods to find each of them so let’s quickly go over the difference between the two. There are internal (or local) and external (or public) addresses. What is the difference between an IP address and a MAC address?įor our discussion here, there are really two types of IP addresses that we need to worry about.Finding the External or Public IP address using Google.Finding Internal or Local IP Addresses on your Desktop.You will see a list of all the network interfaces with their MAC addresses (Ethernet Address).Go to Utilities (Finder > Utilities OR command + shift + u) and start the Terminal app.You should see the MAC address in this format 00:00:00:00:00:00 following HWaddr In the terminal, type ifconfig and press ENTER.How to find the MAC address in Unix or Linux You should see the MAC address in this format 00:00:00:00:00:00 In the DOS prompt, type ipconfig /all and press ENTER.Read my article about MAC addresses How to find the MAC address How to find the MAC address in Windows IAB is also known as Individual Address Blocks and the number of addresses is 2 24 or 16 million. MA-S, or MAC Address Block Small, is a block of MAC addresses where the maximum of addresses is 2 12 or 4096. MA-M, or MAC Address Block Medium, is a block of MAC addresses where the maximum number of addresses is 2 20 or 1 million. MA-L, or MAC Address Block Large is a block of MAC addresses where the maximum number of addresses is 2 24 or 16 million. The OUI is basically the first three octets of a MAC address.

They are purchased and assigned by the IEEE. They can either be written in either of these formats:Īn OUI is a 24-bit number that uniquely identifies a vendor or manufacturer. It is a 48-bit number (12 hexadecimal characters). Coming up: MAC address API What is a MAC address? What is OUI? What are MA-L, MA-M, MA-S?Ī MAC address is a unique identifier for network interfaces.