Who owns MAC prefix A019B21?

A019B21 is registered to El Sewedy Electrometer Egypt S.A.E. in the IEEE MA-M registry.

What devices use A019B21?

Any network device with a MAC address starting A0:19:B2:1 was manufactured by or for El Sewedy Electrometer Egypt S.A.E..

MA-M · OUI prefix

El Sewedy Electrometer Egypt S.A.E.

Any MAC address starting A0:19:B2:1 is registered to El Sewedy Electrometer Egypt S.A.E. in EG.

OUI prefix	A019B21
Vendor	El Sewedy Electrometer Egypt S.A.E.
Registry	MA-M (28-bit, medium block)
Country	EG
Example MAC	A0:19:B2:1:00:00:00

What this means

The IEEE assigned the MA-M block A019B21 to El Sewedy Electrometer Egypt S.A.E.. 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 A0:19:B2:1, it is El Sewedy Electrometer Egypt S.A.E. hardware.

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