AT&T MAC address blocks
The IEEE registry carries 6 blocks registered to AT&T, together 84.9 million addresses, first observed 22 Apr 1998, most recently 17 Dec 2022.
Registered in US.
Its portfolio also includes blocks acquired from ATT BELL LABORATORIES × 2.
Cumulative address space by first-observed date on a linear scale sized to this chart; hover for date and total.
| Prefix |
Block |
Addresses |
Country |
First registered |
| 00:07:1C | MA-L | 16.8 million | US | 24 Oct 2001 |
| 00:60:D3 | MA-L | 16.8 million | US | 22 Apr 1998 |
| 08:00:6A | MA-L | 16.8 million | US | 8 Sep 2000 |
| 80:00:10 | MA-L | 16.8 million | US | 8 Sep 2000 |
| 80:3A:59 | MA-L | 16.8 million | US | 16 Sep 2017 |
| D0:93:95:2 | MA-M | 1 million | US | 17 Dec 2022 |
Every block registered to AT&T in the IEEE registries, complete. Free-text search also matches former owners.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.