MAC address vendor

Adler ELREHA GmbH: device identity Unknown

Primary prefix
B0:C1:28
Block
MA-L

Summary

// what this is
Adler ELREHA is registered to MAC prefix B0:C1:28 in the IEEE OUI database. When a device's MAC address begins with B0:C1:28, that block was registered by Adler ELREHA — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
// analyst note
A match establishes the registry assignment, not a particular device, operator, deployment, or security state. B0:C1:28 is a 24-bit prefix with 24 suffix bits, or 16,777,216 possible suffix values. Its first-octet Group and Local bits are both 0 and are fixed for this exact prefix; changing either bit yields a different prefix.
[ 01 ] — Context

About this vendor.

Updated  ·  Confidence: Medium  ·  2 sources  ·  How this page is checked

A MAC address beginning with B0:C1:28 identifies an IEEE MA-L registry assignment to Adler ELREHA GmbH; the supplied evidence does not identify a device category or product using it. The assignment is a registry record, not evidence of a particular device, its operator, deployment, or safety.

The prefix is 24 bits long, leaving 24 bits for suffix values: 16,777,216 possible values. That is a mathematical address space, not a count of devices or shipments. In the first octet, B0 has Group bit 0 and Local bit 0. For this exact prefix, both bits are fixed; changing either produces a different prefix. RFC 7042 describes 48-bit MAC identifiers as an initial organizational prefix followed by additional bits.

The record indicates Germany. No product, industry, or device category is established by the supplied evidence, and no product-to-prefix mapping is provided.

Vendor
Adler ELREHA GmbH is the organization named for this MA-L assignment.
Device identity
Unknown; the supplied record does not map the prefix to a device category or product.
Prefix
B0:C1:28 (MA-L), with a 24-bit matching boundary.
Country
Germany, as indicated by the registry record.
Company
Adler ELREHA GmbH [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Registry
MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Prefix
B0:C1:28 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Country
Germany [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
Device category
Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
[ 02 ] — OUI prefixes

Assignments by IEEE.

1
// registered prefixes1
  1. B0:C1:28MA-L
[ 03 ] — Related

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