MAC prefix 00:A0:66
Isa Co., Ltd.
| Vendor | Isa Co., Ltd. |
|---|---|
| Short name | Isa |
| Prefix | 00:A0:66/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | 00:A0:66:00:00:00 – 00:A0:66:FF:FF:FF |
| Notations | 00:A0:66:00:00:0000-A0-66-00-00-0000a0.6600.000000A066000000 |
Frequently asked questions
Which vendor does MAC address 00:A0:66 belong to?
MAC addresses starting with 00:A0:66 are assigned to Isa Co., Ltd. according to the IEEE registry (prefix length 24 bits).
How many addresses does block 00:A0:66 contain?
The block contains 16,777,216 addresses from 00:A0:66:00:00:00 to 00:A0:66:FF:FF:FF.
Is 00:A0:66 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.