Honeywell (30:09:F9:C0:00:00 /28)

Honeywell MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

Prefix30:09:F9:C0:00:00 /28

Vendor address13350 US Hwy 19 N Clearwater null US 33764

Block range30:09:F9:C0:00:00– 30:09:F9:CF:FF:FF

Address capacity1,048,576

AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority

TransmissionUnicast: addressed to a single device

SourceIEEE Registration Authority

Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.

Curious how a prefix like this turns into a full address? See how MAC addresses are structured →

Example addresses in this block

30:09:F9:C0:00:00 30:09:F9:C7:FF:FF 30:09:F9:CF:FF:FF

Other blocks registered to Honeywell

00:22:6A:00:00:00 /24 MA-L 00:40:84:00:00:00 /24 MA-L 58:FC:C8:00:00:00 /24 MA-L C4:EF:DA:00:00:00 /24 MA-L 00:50:C2:53:E0:00 /36 IAB 00:50:C2:61:60:00 /36 IAB 00:50:C2:8F:90:00 /36 IAB 00:50:C2:B0:B0:00 /36 IAB 00:50:C2:C7:B0:00 /36 IAB 00:50:C2:D9:50:00 /36 IAB 00:50:C2:F5:50:00 /36 IAB 40:D8:55:08:00:00 /36 IAB