E8:B4:70:20:00:00 to E8:B4:70:2F:FF:FF
internet domain name system beijing engineering research center ltd
Inspect this prefixRegistered address
4,4TH SOUTH STREET ZHONG GUAN CUN
hai dian qu ,beijing BEIJING 100190
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- E8:B4:70:2 /28
- Addresses in block
- 1,048,576
- Decimal range
- 255,861,672,902,656 to 255,861,673,951,231
- 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 E8:B4:70:20:00:00 and E8:B4:70:2F: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.