04:21:4C Insight Energy Ventures LLC
Every MAC address from 04:21:4C:00:00:00 to 04:21:4C:FF:FF:FF belongs to a block the IEEE assigned to Insight Energy Ventures LLC. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 04:21:4C belongs to
Written 04:21:4C, 04-21-4C or 04214C, depending on the system. Look up a full address.
Prefix
04:21:4C
Organization
Insight Energy Ventures LLC
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
04:21:4C:00:00:00
Last address
04:21:4C:FF:FF:FF
Address type
Globally unique, unicast
Registered address
123 W. Fifth St Royal Oak MI US 48067