macadress

Cobham Slip Rings

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.
Prefix1C:FD:08:90:00:00 /28
Vendor address18 Rue de Montréal ANNEMASSE Ville-la-Grand FR 74108
Country🇫🇷  France
RegisteredJul 22, 2018
Block range1C:FD:08:90:00:00– 1C:FD:08:9F: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 →

Ownership timeline

  1. Jul 22, 2018 – Sep 10, 2019 LABEL name changedaddress changed
  2. Sep 10, 2019 – present Cobham Slip Rings

Example addresses in this block

1C:FD:08:90:00:00 1C:FD:08:97:FF:FF 1C:FD:08:9F:FF:FF

Where this block sits

Previous 1C:FD:08:80:00:00 /28 ShenZhen DeLippo Technology Co., LTD Next 1C:FD:08:A0:00:00 /28 Banmak Technogies Co.,Ltd

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

Cobham Slip Rings holds 1 registered blocks in the IEEE registry, ranking #8,694 of 33,427 organizations by block count.