macadress

Calix Inc.

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:06:31:00:00:00 /24
Vendor address2777 Orchard Pkwy San Jose CA US 95131
Country🇺🇸  United States
RegisteredJun 4, 2001
Block range00:06:31:00:00:00– 00:06:31: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 4, 2001 – Jun 7, 2013 Optical Solutions, Inc. name changedaddress changed
  2. Jun 7, 2013 – Nov 29, 2016 Calix name changedaddress changed
  3. Nov 29, 2016 – present Calix Inc.

Example addresses in this block

00:06:31:00:00:00 00:06:31:7F:FF:FF 00:06:31:FF:FF:FF

Where this block sits

Previous 00:06:30:00:00:00 /24 Adtranz Sweden Next 00:06:32:00:00:00 /24 Mesco Engineering GmbH

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

Calix Inc. holds 24 registered blocks in the IEEE registry, ranking #144 of 33,421 organizations by block count.

Other blocks registered to Calix Inc.

04:BC:9F:00:00:00 /24 MA-L 10:03:CD:00:00:00 /24 MA-L 10:74:C5:00:00:00 /24 MA-L 10:7E:59:00:00:00 /24 MA-L 14:21:03:00:00:00 /24 MA-L 1C:8B:76:00:00:00 /24 MA-L 34:C2:29:00:00:00 /24 MA-L 40:E7:62:00:00:00 /24 MA-L 44:65:7F:00:00:00 /24 MA-L 48:77:46:00:00:00 /24 MA-L 4C:43:41:00:00:00 /24 MA-L 5C:DB:36:00:00:00 /24 MA-L