90:4E:91:70:00:00 to 90:4E:91:7F:FF:FF
IBM
Inspect this prefixRegistered address
9000 south rita rd
Tucson AZ 85744
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- 90:4E:91:7 /28
- Addresses in block
- 1,048,576
- Decimal range
- 158,667,121,885,184 to 158,667,122,933,759
- 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 90:4E:91:70:00:00 and 90:4E:91:7F: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.