macadress

Sperian Protection Instrumentation

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:14:07:00:00:00 /24
Vendor address651 South Main Street Middletown CT US 06457
Country🇺🇸  United States
RegisteredMar 22, 2005
Block range00:14:07:00:00:00– 00:14:07:FF:FF:FF
Address capacity16,777,216
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. Mar 22, 2005 – Feb 9, 2008 Biosystems name changed
  2. Feb 9, 2008 – present Sperian Protection Instrumentation

Example addresses in this block

00:14:07:00:00:00 00:14:07:7F:FF:FF 00:14:07:FF:FF:FF

Where this block sits

Previous 00:14:06:00:00:00 /24 Go Networks Next 00:14:08:00:00:00 /24 Eka Systems Inc.

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

Sperian Protection Instrumentation holds 1 registered blocks in the IEEE registry, ranking #28,197 of 33,427 organizations by block count.