00:05:91 Active Silicon Ltd
Every MAC address from 00:05:91:00:00:00 to 00:05:91:FF:FF:FF belongs to a block the IEEE assigned to Active Silicon Ltd. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:05:91 belongs to
Written 00:05:91, 00-05-91 or 000591, depending on the system. Look up a full address.
Prefix
00:05:91
Organization
Active Silicon Ltd
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:05:91:00:00:00
Last address
00:05:91:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Pinewood Mews Iver GB SL0 0NA