30:1F:9A:A0:00:00 to 30:1F:9A:AF:FF:FF
HUNAN CHANGSHA HENGJIAN TECHNOLDGY DEVELPMENT CO.,LTD.
Inspect this prefixRegistered address
Jiayun Road 209
Changsha Hunan 410205
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- 30:1F:9A:A /28
- Addresses in block
- 1,048,576
- Decimal range
- 52,912,296,296,448 to 52,912,297,345,023
- 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 30:1F:9A:A0:00:00 and 30:1F:9A:AF: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.