MAC Address Lookup
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IBM Corp MAC address blocks

The IEEE registry carries 22 blocks registered to IBM Corp, together 369 million addresses, first observed 22 Apr 1998, most recently 7 Oct 2010.

Registered in US.

Its portfolio also includes blocks acquired from IBM CORPORATION × 8 · IBM × 5 · BLADE Network Technology × 4 · IBM CORPORATION CE6A/664 × 3.

Prefix Block Addresses Country First registered
00:02:55MA-L16.8 millionUS8 Sep 2000
00:04:ACMA-L16.8 millionUS22 Apr 1998
00:06:29MA-L16.8 millionUS22 Apr 1998
00:09:6BMA-L16.8 millionUS29 Mar 2002
00:0D:60MA-L16.8 millionUS1 Jun 2003
00:11:25MA-L16.8 millionUS25 Apr 2004
00:14:5EMA-L16.8 millionUS14 Apr 2005
00:17:EFMA-L16.8 millionUS13 Apr 2006
00:18:B1MA-L16.8 millionUS1 Jul 2006
00:1A:64MA-L16.8 millionUS29 Nov 2006
00:20:35MA-L16.8 millionUS22 Apr 1998
00:21:5EMA-L16.8 millionUS18 Jun 2008
00:22:00MA-L16.8 millionUS18 Jun 2008
00:25:03MA-L16.8 millionUS25 Jan 2009
00:50:76MA-L16.8 millionUS8 Sep 2000
00:60:94MA-L16.8 millionUS22 Apr 1998
08:00:5AMA-L16.8 millionUS22 Apr 1998
08:17:F4MA-L16.8 millionUS18 Sep 2010
10:00:5AMA-L16.8 millionUS22 Apr 1998
5C:F3:FCMA-L16.8 millionUS7 Oct 2010
E4:1F:13MA-L16.8 millionUS12 Aug 2009
FC:CF:62MA-L16.8 millionUS26 Jan 2010

Every block registered to IBM Corp 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.