CRESTCHIC (UK) LIMITED

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.

Prefix80:1D:0D:80:00:00 /28

Vendor addressSecond Avenue Centrum 100 Burton upon Trent GB DE14 2WF

RegisteredMar 25, 2026

Block range80:1D:0D:80:00:00– 80:1D:0D:8F: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

80:1D:0D:80:00:00 80:1D:0D:87:FF:FF 80:1D:0D:8F:FF:FF

Where this block sits

Previous 80:1D:0D:70:00:00 /28 HANGZHOU INNOWAVEPOWER ELECTRONIC TECHNOLOGY CO.,LTD Next 80:1D:0D:90:00:00 /28 WARNER ELECTRONICS (I) PVT. LTD.

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

CRESTCHIC (UK) LIMITED holds 1 registered blocks in the IEEE registry, ranking #9,382 of 33,427 organizations by block count.