head MAC address blocks

The IEEE registry carries 3 blocks registered to head, together 12.3 thousand addresses, first observed 25 Sep 2011, most recently 19 Oct 2014.

Registered in JP.

Prefix Block Addresses Country First registered
00:1B:C5:07:CMA-S4.1 thousandJP31 Mar 2013
00:50:C2:EA:4IAB4.1 thousandJP25 Sep 2011
70:B3:D5:3E:3MA-S4.1 thousandJP19 Oct 2014

Every block registered to head 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.