MAC Address Lookup
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Rockwell Automation MAC address blocks

The IEEE registry carries 14 blocks registered to Rockwell Automation, together 235 million addresses, first observed 22 Apr 1998, most recently 6 May 2026.

Registered in US.

Prefix Block Addresses Country First registered
00:00:BCMA-L16.8 millionUS22 Apr 1998
00:1D:9CMA-L16.8 millionUS18 Aug 2007
08:61:95MA-L16.8 millionUS22 Jun 2019
18:4C:08MA-L16.8 millionUS15 Nov 2017
34:C0:F9MA-L16.8 millionUS22 Mar 2016
40:41:01MA-L16.8 millionUS16 Jan 2021
44:CC:6EMA-L16.8 millionUS6 May 2026
5C:21:67MA-L16.8 millionUS29 Jul 2022
5C:88:16MA-L16.8 millionUS20 Nov 2018
68:C8:EBMA-L16.8 millionUS28 Oct 2021
BC:F4:99MA-L16.8 millionUS11 Feb 2023
E4:8E:BBMA-L16.8 millionUS11 Feb 2023
E4:90:69MA-L16.8 millionUS10 May 2012
F4:54:33MA-L16.8 millionUS10 May 2012

Every block registered to Rockwell Automation 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.