Acro Associates, Inc. MAC prefix: vendor identification only
Summary
- // what this is
- Acro Associates is registered to MAC prefix
7C:C8:ABin the IEEE OUI database. When a device's MAC address begins with7C:C8:AB, that block was registered by Acro Associates — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- The 24-bit prefix 7C:C8:AB leaves 24 bits, allowing 16,777,216 possible suffix values. For the first octet 7C, both Group (mask 01) and Local (mask 02) bits are zero. Changing either bit yields a different prefix; suffix variation within the assigned prefix does not change those bits. A match supports registry attribution only, not identification of a device or product.
About this vendor.
A MAC address beginning 7C:C8:AB matches an IEEE MA-L assignment to Acro Associates, Inc.; the record does not identify a device or product. The assignment is a registry attribution, not evidence that this company currently made, deployed, or transmitted the address.
The 24-bit prefix leaves 24 bits for suffix values, or 16,777,216 possible values. That arithmetic describes the address space, not the number of devices or shipments. An exact match establishes only that the first three octets agree with this assignment.
For this prefix, the first octet is 7C (binary 01111100). Its Group bit (bit mask 01) and Local bit (bit mask 02) are both zero, consistent with the RFC 7042 description of assignment prefixes. Changing either bit changes the prefix and is not variation within this fixed assignment. IEEE CSV records provide no assignment date.
- Vendor match
- Acro Associates, Inc. is the organization named for
7C:C8:ABin the MA-L registry. - Prefix length
7C:C8:ABis a 24-bit prefix; the remaining 24 bits allow 16,777,216 possible suffix values.- Device identification
- Unknown; the assignment record does not map this prefix to a device category or product.
- Company
- Acro Associates, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
7C:C8:AB[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- US [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv