RIM Testing Services MAC prefixes: vendor identified, device unknown
Summary
- // what this is
- RIM Testing Services is registered to MAC prefix
00:21:06and 1 more in the IEEE OUI database. When a device's MAC address begins with00:21:06, that block was registered by RIM Testing Services — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Both assignments are 24-bit prefixes with Group bit 0 and Local bit 0 in the first byte. Each leaves 24 suffix bits (16,777,216 possible values); this does not indicate an actual device or shipment count. Match the full first three octets. A prefix match identifies a registry assignment, not a specific device, operating system, current legal identity, or security state.
About this vendor.
A MAC address beginning with 00:21:06 or 00:24:9F matches an IEEE MA-L assignment to RIM Testing Services; the records do not identify a device or product for either prefix.
The IEEE records list two full 24-bit prefixes under the organization name “RIM Testing Services.” A match establishes the registry assignment, but does not establish which device sent the address, whether it is currently deployed, or its safety.
Both prefixes begin with byte 00. Its Group bit is 0 and Local bit is 0, consistent with the RFC 7042 description of assigned prefixes. Changing either bit produces a different prefix; these fixed prefix assignments do not vary within that match boundary.
Each 24-bit prefix leaves 24 address bits, or 16,777,216 possible suffix values. That is an arithmetic range, not a count of devices or shipments. Compare the full first three octets to distinguish these assignments; a match cannot identify a specific device or product.
- Matching prefixes
00:21:06and00:24:9F(both /24) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device or product
- Unknown; no device mapping is supplied [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- RIM Testing Services [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- Canada [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:21:06,00:24:9F[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment dates
- unavailable in these records [Unknown] — https://standards-oui.ieee.org/oui/oui.csv