MAC prefix E0:D4:91
| Vendor | Cisco Systems, Inc |
|---|---|
| Short name | Cisco |
| Prefix | E0:D4:91/24 |
| Block type | MA-L (/24, 16,777,216 addresses) |
| Address range | E0:D4:91:00:00:00 – E0:D4:91:FF:FF:FF |
| Notations | E0:D4:91:00:00:00E0-D4-91-00-00-00e0d4.9100.0000E0D491000000 |
Frequently asked questions
Which vendor does MAC address E0:D4:91 belong to?
MAC addresses starting with E0:D4:91 are assigned to Cisco Systems, Inc according to the IEEE registry (prefix length 24 bits).
How many addresses does block E0:D4:91 contain?
The block contains 16,777,216 addresses from E0:D4:91:00:00:00 to E0:D4:91:FF:FF:FF.
Is E0:D4:91 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.
Which other MAC prefixes does Cisco Systems, Inc have?
Cisco Systems, Inc holds 1,258 registered prefixes in total – the full list is on the vendor page.