macadress

Tellabs Enterprise, Inc.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:C0:9B:00:00:00 /24
Vendor address4240 International Parkway Suite 105 Carrollton TX US 75007
Country🇺🇸  United States
RegisteredApr 22, 1998
Block range00:C0:9B:00:00:00– 00:C0:9B: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. Apr 22, 1998 – Sep 24, 2021 RELIANCE COMM/TEC, R-TEC name changedaddress changed
  2. Sep 24, 2021 – present Tellabs Enterprise, Inc.

Example addresses in this block

00:C0:9B:00:00:00 00:C0:9B:7F:FF:FF 00:C0:9B:FF:FF:FF

Where this block sits

Previous 00:C0:9A:00:00:00 /24 PHOTONICS CORPORATION Next 00:C0:9C:00:00:00 /24 HIOKI E.E. CORPORATION

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

Tellabs Enterprise, Inc. holds 1 registered blocks in the IEEE registry, ranking #29,645 of 33,427 organizations by block count.