40:ED:98:00:00:00 to 40:ED:98:0F:FF:FF
Tsinghua Tongfang Co., LTD
Inspect this prefixRegistered address
Wangzhuang Road No.1, Haidian District, Beijing, Tsinghua Tongfang Technology Plaza. D 21st Floor
Beijing Beijing 100083
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- 40:ED:98:0 /28
- Addresses in block
- 1,048,576
- Decimal range
- 71,389,201,563,648 to 71,389,202,612,223
- 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 40:ED:98:00:00:00 and 40:ED:98:0F: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.