Arista Networks

Arista Networks accessible at www.arista.com, manages 31 unique MAC address prefixes. These prefixes are part of a massive allocation with a total block size of 520.1 million addresses.

The allocation includes the following types: MA-L (Mac Address Block Large, ~16 million addresses each).

The company registered its MAC address allocation on 13 May 2007, and the most recent update was made on 03 March 2025. These allocations support network identification and communication globally.

Unique prefixes: 31

Block Size: 520093665 (520.09 M)

www.arista.com

First registration: 13 May 2007

Last updated: 03 March 2025

Types

MA-L:Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

MAC PrefixTypeRegistration Date
00:1C:73 MA-L2007-05-13
28:99:3A MA-L2016-08-26
28:E7:1D MA-L2022-06-10
2C:DD:E9 MA-L2021-03-09
38:38:A6 MA-L2022-09-07
44:4C:A8 MA-L2015-11-17
54:0F:2C MA-L2024-08-08
5C:16:C7 MA-L2011-05-07
68:BF:6C MA-L2024-05-09
74:83:EF MA-L2017-07-23
78:5F:6C MA-L2025-01-21
88:F7:15 MA-L2025-01-21
94:8E:D3 MA-L2020-10-16
98:5D:82 MA-L2018-08-05
9C:69:ED MA-L2024-06-25
A4:7A:72 MA-L2025-03-03
A8:8F:99 MA-L2024-11-07
AC:3D:94 MA-L2023-01-13
B8:A1:B8 MA-L2024-09-20
C0:69:11 MA-L2022-04-06
C0:D6:82 MA-L2019-11-20
C4:CA:2B MA-L2021-07-23
CC:1A:A3 MA-L2023-04-26
D4:AF:F7 MA-L2020-06-11
D8:06:F3 MA-L2024-12-04
E0:1C:A7 MA-L2024-05-02
E4:78:76 MA-L2023-06-07
E8:AE:C5 MA-L2021-11-30
EC:8A:48 MA-L2022-11-08
FC:59:C0 MA-L2023-03-09
FC:BD:67 MA-L2019-03-18