Who owns MAC prefix A4D73C?

A4D73C is registered to Seiko Epson Corporation in the IEEE MA-L registry.

What devices use A4D73C?

Any network device with a MAC address starting A4:D7:3C was manufactured by or for Seiko Epson Corporation.

MA-L · OUI prefix

Seiko Epson Corporation

Any MAC address starting A4:D7:3C is registered to Seiko Epson Corporation in JP.

OUI prefix	A4D73C
Vendor	Seiko Epson Corporation
Registry	MA-L (24-bit, large block)
Country	JP
Example MAC	A4:D7:3C:00:00:00

What this means

The IEEE assigned the MA-L block A4D73C to Seiko Epson Corporation. 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 A4:D7:3C, it is Seiko Epson Corporation hardware.

Other Seiko Epson Corporation prefixes

Seiko Epson Corporation holds 22 registered blocks in total.

000048 0026AB 381A52 389D92 44D244 50579C 5805D9 64C6D2 64EB8C 6855D4 9CAED3 A4EE57 all 22 »

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