38:3A:21:B Pactron
Every MAC address from 38:3A:21:B0:00:00 to 38:3A:21:BF:FF:FF belongs to a block the IEEE assigned to Pactron. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 38:3A:21:B belongs to
Written 38:3A:21:B, 38-3A-21-B or 383A21B, depending on the system. Look up a full address.
Prefix
38:3A:21:B/28
Organization
Pactron
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
38:3A:21:B0:00:00
Last address
38:3A:21:BF:FF:FF
Address type
Globally unique, unicast
Registered address
3000 Patrick Henry Santa Clara CA US 95054
Parent block
Inside 38:3A:21
This MA-M block is carved from the 24-bit block 38:3A:21, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.