macadress

Master Meter Inc.

MA-S
MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:A9:F0:00 /36
Vendor address101 Regency Pkwy Mansfield TX US 76063
Country🇺🇸  United States
RegisteredFeb 21, 2016
Block range70:B3:D5:A9:F0:00– 70:B3:D5:A9:FF: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 →

Ownership timeline

  1. Feb 21, 2016 – Jan 14, 2021 Private name changedaddress changedcountry changed
  2. Jan 14, 2021 – present Master Meter Inc.

Example addresses in this block

70:B3:D5:A9:F0:00 70:B3:D5:A9:F7:FF 70:B3:D5:A9:FF:FF

Where this block sits

Previous 70:B3:D5:A9:E0:00 /36 Argon ST Next 70:B3:D5:AA:00:00 /36 Simple Works, Inc.

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

Master Meter Inc. holds 1 registered blocks in the IEEE registry, ranking #19,270 of 33,427 organizations by block count.