MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix80:C3:BA:00:00:00 /24
Vendor addressIm Heidkampe 9 Hannover DE 30659
RegisteredJun 26, 2021
Block range80:C3:BA:00:00:00– 80:C3:BA: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.

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Ownership timeline

  1. Jun 26, 2021 – Jan 15, 2022 Sennheiser electronic GmbH & Co. KG name changed
  2. Jan 15, 2022 – Jul 22, 2022 Sennheiser Consumer Audio GmbH name changed
  3. Jul 22, 2022 – present Sonova Consumer Hearing GmbH

Dates show when a change became public in the IEEE registry. How we track ownership history →

Example addresses in this block

Where this block sits

Sonova Consumer Hearing GmbH holds 2 registered blocks in the IEEE registry, ranking #3,122 of 33,498 organizations by block count.

Other blocks registered to Sonova Consumer Hearing GmbH