MAC addresses can also be used to assign static IP addresses and can be filtered further to limit the number of device connections in a network. However, if you know how to find the MAC address on your MacBook, you can use that to help identify your computer’s IP address.Īdditionally, internet service providers can use your MacBook’s MAC address to control your access. Your MacBook can also sometimes fail to display its IP address, leading to the said error. That’s because IP addresses can be hidden through VPNs (Virtual Private Networks). Sometimes, you might encounter a “No Valid IP Address” error. Why Would You Need to Find the MAC Address on MacBook The MAC address is often found on a device’s network interface card (NIC) and is required when locating a device or when doing diagnostics on a network device. The last six digits, on the other hand, represent the Network Interface Controller assigned by the manufacturer to the device. The first six digits, called the Organizational Unique Identifier, represent the manufacturer of the device. The MAC address, or media access control address, is a 12-digit hexadecimal number assigned to each network device. Let me walk you through the simple steps to find the MAC address on your MacBook. For instance, configuring a network router to filter devices or troubleshooting that network requires the MAC address. Knowing how to find the MAC address on your MacBook could sometimes be useful.

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