34:40:B5 IBM
Every MAC address from 34:40:B5:00:00:00 to 34:40:B5:FF:FF:FF belongs to a block the IEEE assigned to IBM. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 34:40:B5 belongs to
Written 34:40:B5, 34-40-B5 or 3440B5, depending on the system. Look up a full address.
Prefix
34:40:B5
Organization
IBM
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
34:40:B5:00:00:00
Last address
34:40:B5:FF:FF:FF
Address type
Globally unique, unicast
Registered address
3039 E Cornwallis Rd Research Triangle Park NC US 27709
Same organization
Other blocks assigned to IBM
6 more blocks registered under the same name.