（Room 501
Building 10
Area 2
Headquarters Base）NO.188
South 4th Ring West Road
Fengtai District Beijing Beijing CN 100070
| Registry | Prefix | First MAC in span | Last MAC in span |
|---|---|---|---|
| MA-M | 50A4D08 | 50A4D0800000 | 50A4D08FFFFF |
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