macadress

Nortel Networks

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:18:B0:00:00:00 /24
Vendor address8200 Dixie Rd Brampton Ontario CA 0000
Country🇨🇦  Canada
RegisteredJun 15, 2006
Block range00:18:B0:00:00:00– 00:18:B0: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. Jun 15, 2006 – Apr 27, 2016 Nortel name changedaddress changed
  2. Apr 27, 2016 – present Nortel Networks

Example addresses in this block

00:18:B0:00:00:00 00:18:B0:7F:FF:FF 00:18:B0:FF:FF:FF

Where this block sits

Previous 00:18:AF:00:00:00 /24 Samsung Electronics Co.,Ltd Next 00:18:B1:00:00:00 /24 IBM Corp

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

Nortel Networks holds 68 registered blocks in the IEEE registry, ranking #54 of 33,421 organizations by block count.

Other blocks registered to Nortel Networks

00:00:75:00:00:00 /24 MA-L 00:01:81:00:00:00 /24 MA-L 00:02:5F:00:00:00 /24 MA-L 00:03:42:00:00:00 /24 MA-L 00:03:4B:00:00:00 /24 MA-L 00:04:38:00:00:00 /24 MA-L 00:04:DC:00:00:00 /24 MA-L 00:09:97:00:00:00 /24 MA-L 00:0C:F7:00:00:00 /24 MA-L 00:0C:F8:00:00:00 /24 MA-L 00:0E:40:00:00:00 /24 MA-L 00:0E:62:00:00:00 /24 MA-L