Adtran Inc (28:D0:CB:00:00:00 /24)

Adtran Inc MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

Prefix28:D0:CB:00:00:00 /24

Vendor addressVictory House, Vision Park, Chivers Way, Histon Cambridge GB CB24 9ZR

Block range28:D0:CB:00:00:00– 28:D0:CB:FF:FF:FF

Address capacity16,777,216

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

28:D0:CB:00:00:00 28:D0:CB:7F:FF:FF 28:D0:CB:FF:FF:FF

Other blocks registered to Adtran Inc

00:01:4F:00:00:00 /24 MA-L 00:19:92:00:00:00 /24 MA-L 00:24:45:00:00:00 /24 MA-L 00:A0:C8:00:00:00 /24 MA-L 20:5F:3D:00:00:00 /24 MA-L 38:F8:F6:00:00:00 /24 MA-L 54:22:E0:00:00:00 /24 MA-L 58:87:85:00:00:00 /24 MA-L 64:A0:AC:00:00:00 /24 MA-L 84:4D:4C:00:00:00 /24 MA-L AC:13:9C:00:00:00 /24 MA-L AC:51:EE:00:00:00 /24 MA-L