ACT MAC address blocks

The IEEE registry carries 4 blocks registered to ACT, together 1.1 million addresses, first observed 30 Jul 2008, most recently 16 Oct 2015.

Registered in IE.

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
00:50:C2:34:5	IAB	4.1 thousand	IE	30 Jul 2008
00:50:C2:B2:E	IAB	4.1 thousand	IE	6 Sep 2009
90:C6:82:9	MA-M	1 million	IE	16 Oct 2015
40:D8:55:0C:0	IAB	4.1 thousand	IE	24 Mar 2013

Every block registered to ACT 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.