28:41:21 OptiSense Network, LLC
Every MAC address from 28:41:21:00:00:00 to 28:41:21:FF:FF:FF belongs to a block the IEEE assigned to OptiSense Network, LLC. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 28:41:21 belongs to
Written 28:41:21, 28-41-21 or 284121, depending on the system. Look up a full address.
Prefix
28:41:21
Organization
OptiSense Network, LLC
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
28:41:21:00:00:00
Last address
28:41:21:FF:FF:FF
Address type
Globally unique, unicast
Registered address
1308 10th Street Bridgeport TX US 76426