E4:4C:C7:40:00:00 to E4:4C:C7:4F:FF:FF
Beijing Zhongchuangwei Nanjing Quantum Communication Technology Co., Ltd.
Inspect this prefixRegistered address
No. 88, pubin avenue, jiangpu street, pukou district, nanjing city
nanjing Jiangsu 210000
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- E4:4C:C7:4 /28
- Addresses in block
- 1,048,576
- Decimal range
- 251,018,411,507,712 to 251,018,412,556,287
- Address type
- Unicast, universally administered
What this block covers
A 28 bit block. Sixteen of these fit inside one 24 bit prefix, so the first three octets are shared with other registrants.
Any MAC address between E4:4C:C7:40:00:00 and E4:4C:C7:4F:FF:FF belongs to this assignment. The registrant chooses the remaining 20 bits, so the same prefix can appear on very different products from the same company.