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Random MAC Address Generator - Online

MAC Address Format
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    Please enter the quantity, then click "Generate" to randomly generate MAC addresses

The online MAC address generator can generate a random number of MAC addresses for your testing. This tool offers an option to specify a custom prefix (OUI) and can generate five common MAC address formats, supporting both uppercase and lowercase, different transmission types, and different management types of MAC addresses to suit your needs.

This service generates real MAC addresses that meet your requirements for PC devices, mobile devices, etc., simply by selecting options during the generation process. Additionally, if you need a large number of MAC addresses at once, you can generate up to 500 at a time.

FAQ - Online Random MAC Address Generator

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What is a MAC address?

A MAC address is a hardware address used to uniquely identify network devices, typically consisting of 12 hexadecimal characters (e.g., XX:XX:XX:XX:XX:XX). It is used for data link layer communication and is assigned by the device manufacturer.

What is the difference between a global address and a locally administered address?

A global address is assigned by the manufacturer and contains the Organizationally Unique Identifier (OUI); a locally administered address is assigned by an administrator and overrides the device's default MAC address. The U/L bit is 0 for a global address and 1 for a locally administered address.

What is the difference between a unicast address and a multicast address?

A unicast address is used for one-to-one communication, where the data frame is transmitted to only one receiving device; a multicast address is used for one-to-many communication, where data is sent to multiple devices.

What is an OUI MAC address?

OUI (Organizationally Unique Identifier) is the first 6 characters of a MAC address that identify the device manufacturer. It is assigned by IEEE, with common manufacturers like Dell (00-14-22), Cisco (00-40-96), etc.

What is the difference between a MAC address and an IP address?

A MAC address is used for the unique identification of a device, operating at the data link layer; an IP address is used for the device's location within a network, operating at the network layer.

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