ATX MAC address blocks

The IEEE registry carries 2 blocks registered to ATX, together 17.8 million addresses, first observed 25 Feb 2005, most recently 16 Oct 2015.

Registered in CA · US.

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
00:13:CA	MA-L	16.8 million	CA	25 Feb 2005
74:F8:DB:3	MA-M	1 million	US	16 Oct 2015

Every block registered to ATX 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.