What this means
The IEEE assigned the MA-S block 70B3D55F7 to JFA Electronics Industry and Commerce EIRELI. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 70:B3:D5:5F:7, it is JFA Electronics Industry and Commerce EIRELI hardware.
Frequently Asked Questions
Who owns MAC prefix 70B3D55F7?
70B3D55F7 is registered to JFA Electronics Industry and Commerce EIRELI in the IEEE MA-S registry.
What does the MA-S registry type mean?
An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. JFA Electronics Industry and Commerce EIRELI's block covers 4,096 addresses.
What devices use 70B3D55F7?
Any network device with a MAC address starting 70:B3:D5:5F:7 was manufactured by or for JFA Electronics Industry and Commerce EIRELI.