EMAC, Inc. (40:D8:55:18:30:00 /36)

EMAC, Inc. IAB

IAB: an Individual Address Block, a /36 covering 4,096 addresses. IEEE's predecessor to MA-S; no longer issued, but existing assignments remain valid.

Prefix40:D8:55:18:30:00 /36

Vendor address2390 EMAC Way Carbondale IL US 62901

Country🇺🇸 United States

Block range40:D8:55:18:30:00– 40:D8:55:18:3F:FF

Address capacity4,096

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

40:D8:55:18:30:00 40:D8:55:18:37:FF 40:D8:55:18:3F:FF

Other blocks registered to EMAC, Inc.

28:BC:56:00:00:00 /24 MA-L 00:50:C2:0E:00:00 /36 IAB 00:50:C2:97:40:00 /36 IAB 00:50:C2:B8:70:00 /36 IAB 00:50:C2:C9:20:00 /36 IAB 00:50:C2:D6:20:00 /36 IAB 00:50:C2:D7:10:00 /36 IAB 00:50:C2:E6:60:00 /36 IAB 00:50:C2:F6:20:00 /36 IAB 00:50:C2:F8:A0:00 /36 IAB 40:D8:55:09:D0:00 /36 IAB 40:D8:55:13:10:00 /36 IAB