AT&T acquired MAC address blocks

2 blocks now registered to AT&T came through 1 former-owner relationship.

MAC address or OUI prefix Look up

Current owner

AT&T

Former owners

1

Blocks

2

Addresses

33.6 million

Former owners: ATT BELL LABORATORIES × 2

Prefix	Former owner	Block	Addresses	First observed
08:00:6A	ATT BELL LABORATORIES	MA-L	16.8 million	8 Sep 2000
80:00:10	ATT BELL LABORATORIES	MA-L	16.8 million	8 Sep 2000

Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.