70:B3:D5:03:C Ultimate Software
Every MAC address from 70:B3:D5:03:C0:00 to 70:B3:D5:03:CF:FF belongs to a block the IEEE assigned to Ultimate Software. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:03:C belongs to
Written 70:B3:D5:03:C, 70-B3-D5-03-C or 70B3D503C, depending on the system. Look up a full address.
Prefix
70:B3:D5:03:C/36
Organization
Ultimate Software
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:03:C0:00
Last address
70:B3:D5:03:CF:FF
Address type
Globally unique, unicast
Registered address
2000 Ultimate Way Weston FL US 33326
Parent block
Inside 70:B3:D5
This MA-S block is carved from the 24-bit block 70:B3:D5, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.