MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:50:CA:00:00:00 /24
Vendor address680 CENTRAL AVENUE - STE. #301 DOVER NH US 03820
Country🇺🇸 United States
RegisteredSep 8, 2000
Block range00:50:CA:00:00:00– 00:50:CA: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
- Sep 8, 2000 – Dec 16, 2022 NET TO NET TECHNOLOGIES name changed
- Dec 16, 2022 – Dec 18, 2022 DZS California Inc. name changed
- Dec 18, 2022 – Jul 29, 2025 DZS Inc. name changed
- Jul 29, 2025 – present Zhone Technologies, Inc.
Example addresses in this block
Where this block sits
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Zhone Technologies, Inc. holds 12 registered blocks in the IEEE registry, ranking #269 of 33,427 organizations by block count.
Other blocks registered to Zhone Technologies, Inc.