Japan Radio Co., Ltd

Japan Radio Co., Ltd , manages 2 unique MAC address prefixes. These prefixes are part of a massive allocation with a total block size of 33.6 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 03 December 2015, and the most recent update was made on 13 February 2026. These allocations support network identification and communication globally.

Unique prefixes: 2

Block Size: 33554430 (33.55 M)

First registration: 03 December 2015

Last updated: 13 February 2026

Types

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

MAC PrefixTypeRegistration Date
18:4F:5D MA-L2020-10-06
70:88:4D MA-L2015-12-03