D4:7B:6B:00:00:00 to D4:7B:6B:FF:FF:FF
Shanghai Cygnus Semiconductor Co., Ltd.
Inspect this prefixRegistered address
Rooms 401 and 402, Building 5, 690 Bibo Road, China (Shanghai) Pilot Free Trade Zone
Shanghai Shanghai 201203
Block details
- Registry
- MA-L, MAC Address Block Large (OUI)
- Prefix
- D4:7B:6B /24
- Addresses in block
- 16,777,216
- Decimal range
- 233,626,541,228,032 to 233,626,558,005,247
- Address type
- Unicast, universally administered
What this block covers
The classic 24 bit OUI. The registrant owns the first three octets and can assign every one of the remaining 16.7 million addresses.
Any MAC address between D4:7B:6B:00:00:00 and D4:7B:6B:FF:FF:FF belongs to this assignment. The registrant chooses the remaining 24 bits, so the same prefix can appear on very different products from the same company.