00:21:E3 SerialTek LLC
Every MAC address from 00:21:E3:00:00:00 to 00:21:E3:FF:FF:FF belongs to a block the IEEE assigned to SerialTek LLC. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:21:E3 belongs to
Written 00:21:E3, 00-21-E3 or 0021E3, depending on the system. Look up a full address.
Prefix
00:21:E3
Organization
SerialTek LLC
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:21:E3:00:00:00
Last address
00:21:E3:FF:FF:FF
Address type
Globally unique, unicast
Registered address
1570 Oakland Road San Jose CA US 95131