Who owns MAC prefix 8C1F64C09?

8C1F64C09 is registered to S.E.I. CO.,LTD. in the IEEE MA-S registry.

What devices use 8C1F64C09?

Any network device with a MAC address starting 8C:1F:64:C0:9 was manufactured by or for S.E.I. CO.,LTD..

MA-S · OUI prefix

S.E.I. CO.,LTD.

Any MAC address starting 8C:1F:64:C0:9 is registered to S.E.I. CO.,LTD. in JP.

OUI prefix	8C1F64C09
Vendor	S.E.I. CO.,LTD.
Registry	MA-S (36-bit, small block)
Country	JP
Example MAC	8C:1F:64:C0:9:00:00:00

What this means

The IEEE assigned the MA-S block 8C1F64C09 to S.E.I. CO.,LTD.. 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 8C:1F:64:C0:9, it is S.E.I. CO.,LTD. hardware.

Other S.E.I. CO.,LTD. prefixes

S.E.I. CO.,LTD. holds 4 registered blocks in total.

70B3D512D 70B3D556B 8C1F64655

Look up another MAC