macadress

Sirin Mobile Technologies

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.
Prefix38:B8:EB:70:00:00 /28
Vendor addressMuhlentalstrasse 2 Schaffhausen CH 8200
Country🇨🇭  Switzerland
RegisteredNov 29, 2015
Block range38:B8:EB:70:00:00– 38:B8:EB:7F: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. Nov 29, 2015 – Dec 23, 2020 Private name changedaddress changedcountry changed
  2. Dec 23, 2020 – present Sirin Mobile Technologies

Example addresses in this block

38:B8:EB:70:00:00 38:B8:EB:77:FF:FF 38:B8:EB:7F:FF:FF

Where this block sits

Previous 38:B8:EB:60:00:00 /28 MATRIXSTREAM TECHNOLOGIES, INC. Next 38:B8:EB:80:00:00 /28 CeeNex Inc

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

Sirin Mobile Technologies holds 1 registered blocks in the IEEE registry, ranking #27,540 of 33,427 organizations by block count.