Ciena Corporation

Ciena Corporation , manages 25 unique MAC address prefixes. These prefixes are part of a massive allocation with a total block size of 419.4 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 25 October 2008, and the most recent update was made on 16 December 2024. These allocations support network identification and communication globally.

Unique prefixes: 25

Block Size: 419430375 (419.43 M)

First registration: 25 October 2008

Last updated: 16 December 2024

Types

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

MAC Prefix Type Registration Date
00:23:8A MA-L 2008-10-25
04:79:FD MA-L 2023-11-07
14:4E:2A MA-L 2018-10-13
18:92:A4 MA-L 2019-09-21
1C:11:61 MA-L 2017-10-11
20:80:58 MA-L 2019-06-19
2C:39:C1 MA-L 2014-02-25
2C:4A:11 MA-L 2020-10-06
54:C3:3E MA-L 2018-06-02
5C:07:A4 MA-L 2023-11-07
74:87:BB MA-L 2018-03-17
78:D7:1A MA-L 2020-07-09
84:8D:CE MA-L 2022-06-16
94:43:4D MA-L 2020-02-29
9C:7A:03 MA-L 2015-11-17
AC:89:D2 MA-L 2022-12-13
C4:83:6F MA-L 2016-10-15
C8:CA:79 MA-L 2021-08-17
D0:19:6A MA-L 2019-02-14
D4:39:B8 MA-L 2020-10-14
D4:B7:D0 MA-L 2021-08-04
D4:E4:C3 MA-L 2024-12-16
E0:9B:27 MA-L 2022-12-13
E4:6D:7F MA-L 2022-06-16
EC:B0:E1 MA-L 2017-08-11