Tofino MAC address blocks

The IEEE registry carries 2 blocks registered to Tofino, together 1.1 million addresses, first observed 22 Mar 2015, most recently 19 Jun 2016.

Registered in 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
F8:1D:78:D	MA-M	1 million	US	19 Jun 2016
70:B3:D5:83:8	MA-S	4.1 thousand	US	22 Mar 2015

Every block registered to Tofino 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.