MAC prefix A0:28:33:4
Firm INFORMTEST Ltd.
| Vendor | Firm INFORMTEST Ltd. |
|---|---|
| Short name | FirmINFORMTE |
| Prefix | A0:28:33:4/28 |
| Block type | MA-M (/28, 1,048,576 addresses) |
| Address range | A0:28:33:40:00:00 – A0:28:33:4F:FF:FF |
| Notations | A0:28:33:40:00:00A0-28-33-40-00-00a028.3340.0000A02833400000 |
Frequently asked questions
Which vendor does MAC address A0:28:33:4 belong to?
MAC addresses starting with A0:28:33:4 are assigned to Firm INFORMTEST Ltd. according to the IEEE registry (prefix length 28 bits).
How many addresses does block A0:28:33:4 contain?
The block contains 1,048,576 addresses from A0:28:33:40:00:00 to A0:28:33:4F:FF:FF.
Is A0:28:33:4 a unicast or multicast address?
The least significant bit of the first byte is 0 – it is a unicast address. The U/L bit is 0, so the address is globally unique (universally administered).
How do I find the MAC address of my device?
On Linux use ip link, on Windows getmac /v or ipconfig /all, on macOS ifconfig. Note: phones and recent operating systems often use random, locally administered addresses on Wi-Fi.