![]() 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). To check this, run the following command in the Terminal and verify the network adapter for which you want to change the MAC address.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. Some Macs may use "en1" instead of "en0".Make sure to use an administrator account to perform the procedure.It might be a good idea to note down your existing MAC addresses in case something goes wrong.If you still experience problems, just reboot your Mac to reset the MAC address. If you're experiencing network issues after changing the MAC address, restart your router and try connecting to it again. ![]() Thankfully, most Macs are low-maintenance and won't need rebooting often. It also means there's no way to permanently change the MAC address on a Mac. To restore your original MAC address, simply reboot your Mac.To verify your MAC address has changed successfully, just recheck it using the procedure we discussed at the beginning.Here are some additional tips to help you through the process: Additional Tips While Changing Your Mac's MAC Address ![]()
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