Ring LLC

MA-L

MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.

PrefixCC:3B:FB:00:00:00 /24

Vendor address12515 Cerise Ave Hawthorne CA US 90250

RegisteredMar 19, 2025

Block rangeCC:3B:FB:00:00:00– CC:3B:FB: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 →

Example addresses in this block

CC:3B:FB:00:00:00 CC:3B:FB:7F:FF:FF CC:3B:FB:FF:FF:FF

Where this block sits

Ring LLC holds 13 registered blocks in the IEEE registry, ranking #247 of 33,498 organizations by block count.

Other blocks registered to Ring LLC

00:B4:63:00:00:00 /24 MA-L 18:7F:88:00:00:00 /24 MA-L 24:2B:D6:00:00:00 /24 MA-L 34:3E:A4:00:00:00 /24 MA-L 50:E4:67:00:00:00 /24 MA-L 54:E0:19:00:00:00 /24 MA-L 5C:47:5E:00:00:00 /24 MA-L 64:9A:63:00:00:00 /24 MA-L 90:48:6C:00:00:00 /24 MA-L 9C:76:13:00:00:00 /24 MA-L AC:9F:C3:00:00:00 /24 MA-L C4:DB:AD:00:00:00 /24 MA-L