MAC Address Lookup
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Adtran Inc MAC address blocks

The IEEE registry carries 15 blocks registered to Adtran Inc, together 252 million addresses, first observed 22 Apr 1998, most recently 15 Jul 2025.

Registered in GB · US.

Its portfolio also includes blocks acquired from Cambridge Communication Systems Ltd × 3.

Prefix Block Addresses Country First registered
00:01:4FMA-L16.8 millionUS8 Sep 2000
00:19:92MA-L16.8 millionUS25 Sep 2006
00:24:45MA-L16.8 millionUS16 Nov 2008
00:A0:C8MA-L16.8 millionUS22 Apr 1998
20:5F:3DMA-L16.8 millionGB11 May 2019
28:D0:CBMA-L16.8 millionGB25 Apr 2018
38:F8:F6MA-L16.8 millionUS16 Sep 2022
54:22:E0MA-L16.8 millionUS20 Oct 2023
58:87:85MA-L16.8 millionUS15 Jul 2025
64:A0:ACMA-L16.8 millionUS13 May 2025
84:4D:4CMA-L16.8 millionUS30 Oct 2024
AC:13:9CMA-L16.8 millionUS5 Jan 2021
AC:51:EEMA-L16.8 millionGB2 Feb 2012
BC:21:06MA-L16.8 millionUS15 Jul 2025
CC:66:18MA-L16.8 millionUS22 Jan 2022

Every block registered to Adtran Inc 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.