| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:13:0A | MA-L | 16.8 million | 11 Dec 2004 | Nortel Networks |
| 00:13:65 | MA-L | 16.8 million | 15 Jan 2005 | Nortel Networks |
| 00:14:0D | MA-L | 16.8 million | 22 Mar 2005 | Nortel Networks |
| 00:14:0E | MA-L | 16.8 million | 22 Mar 2005 | Nortel Networks |
| 00:14:C7 | MA-L | 16.8 million | 27 May 2005 | Nortel Networks |
| 00:15:40 | MA-L | 16.8 million | 21 Jul 2005 | Nortel Networks |
| 00:15:9B | MA-L | 16.8 million | 24 Aug 2005 | Nortel Networks |
| 00:15:E8 | MA-L | 16.8 million | 23 Sep 2005 | Nortel Networks |
| 00:16:60 | MA-L | 16.8 million | 5 Nov 2005 | Nortel Networks |
| 00:16:CA | MA-L | 16.8 million | 15 Dec 2005 | Nortel Networks |
| 00:17:65 | MA-L | 16.8 million | 6 Mar 2006 | Nortel Networks |
| 00:17:D1 | MA-L | 16.8 million | 8 Apr 2006 | Nortel Networks |
| 00:18:B0 | MA-L | 16.8 million | 15 Jun 2006 | Nortel Networks |
| 00:19:69 | MA-L | 16.8 million | 22 Aug 2006 | Nortel Networks |
| 00:19:E1 | MA-L | 16.8 million | 16 Oct 2006 | Nortel Networks |
| 00:1A:8F | MA-L | 16.8 million | 5 Dec 2006 | Nortel Networks |
| 00:1B:25 | MA-L | 16.8 million | 21 Jan 2007 | Nortel Networks |
| 00:1B:BA | MA-L | 16.8 million | 7 Mar 2007 | Nortel Networks |
| 00:1C:17 | MA-L | 16.8 million | 8 Apr 2007 | Nortel Networks |
| 00:1C:9C | MA-L | 16.8 million | 16 May 2007 | Nortel Networks |
| 00:1C:EB | MA-L | 16.8 million | 16 Jun 2007 | Nortel Networks |
| 00:1D:42 | MA-L | 16.8 million | 18 Aug 2007 | Nortel Networks |
| 00:1D:AF | MA-L | 16.8 million | 18 Aug 2007 | Nortel Networks |
| 00:1E:1F | MA-L | 16.8 million | 25 Sep 2007 | Nortel Networks |
| 00:1E:7E | MA-L | 16.8 million | 22 Oct 2007 | Nortel Networks |
| 00:1E:CA | MA-L | 16.8 million | 20 Nov 2007 | Nortel Networks |
| 00:1F:0A | MA-L | 16.8 million | 31 Dec 2007 | Nortel Networks |
| 00:1F:46 | MA-L | 16.8 million | 31 Dec 2007 | Nortel Networks |
| 00:21:62 | MA-L | 16.8 million | 18 Jun 2008 | Nortel Networks |
| 00:60:38 | MA-L | 16.8 million | 22 Apr 1998 | Nortel Networks |
Former Nortel MAC address blocks
The IEEE registry once carried 30 blocks registered to Nortel. All 30 blocks are now registered to Nortel Networks. Nortel Networks took over all of them.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.