6 min read
2026-02-01
A MAC address (Media Access Control) is a unique hardware identifier of a network device. It consists of 48 bits (6 bytes) and is written in hexadecimal format.
| Part | Bits | Description |
|---|---|---|
| OUI | First 24 bits | Manufacturer identifier (IEEE) |
| NIC | Last 24 bits | Unique device number |
Example: **00:1A:2B**:3C:4D:5E — the first three octets (00:1A:2B) identify the manufacturer.
A MAC address can be written in several formats:
Copy the device's MAC address
Paste it into the search field (any format)
Get information about the manufacturer
Identify the manufacturer with the MAC Address Lookup tool.
See also: IP Calculator, User-Agent Parser