RONGCHEENG GOER TECHNOLOGY CO.,LTD.: MAC vendor identification
Summary
- // what this is
- Rongcheeng GOER Technology is registered to MAC prefix
7C:A8:5Dand 1 more in the IEEE OUI database. When a device's MAC address begins with7C:A8:5D, that block was registered by Rongcheeng GOER Technology — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A prefix match identifies an IEEE registry assignment only; it does not establish a device, deployment, product mapping, current vendor identity, or security state. For each listed 24-bit prefix, the deterministic interpretation gives 24 suffix bits (16,777,216 possible values); the first-byte Group and Local bits are fixed at zero for the exact literal prefix. Changing either bit changes the prefix.
About this vendor.
A MAC address beginning with 7C:A8:5D or 0C:27:56 matches an IEEE MA-L assignment to RONGCHEENG GOER TECHNOLOGY CO.,LTD.; the assignment alone does not identify a device or product. The IEEE records list these two 24-bit prefixes for the same legal name. No device category or product-to-prefix mapping is established by the supplied records.
Each prefix fixes the first 24 bits of a 48-bit MAC identifier, leaving 24 suffix bits, or 16,777,216 possible suffix values per prefix. This is an address-space calculation, not a count of devices, shipments, or observed addresses. For either literal prefix, the first-byte Group bit and Local bit are both zero. RFC 7042 describes those bits as having significance in MAC addresses; turning either bit on changes the prefix and is not a variation within the exact assigned prefix.
A captured address with one of these beginnings can therefore support a prefix-level registry match. It cannot establish which device made the address, whether it was deployed by the registrant, or the address's current use or security state. The supplied IEEE records provide no assignment dates.
- Registry match
- RONGCHEENG GOER TECHNOLOGY CO.,LTD. — IEEE MA-L records list both prefixes.
- Matching prefixes
7C:A8:5Dand0C:27:56— each is a 24-bit prefix in a 48-bit MAC identifier.- Device category
- Unknown — no supplied record maps a device category to either exact prefix.
- Company
- RONGCHEENG GOER TECHNOLOGY CO.,LTD. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
7C:A8:5Dand0C:27:56[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- CN, indicated in the IEEE record [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 IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- MAC interpretation
- EUI-48 identifiers use an initial OUI or longer assigned prefix and additional bits; Group and Local bits have MAC significance. [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt