B4:4D:43:40:00:00 to B4:4D:43:4F:FF:FF
ALL.SPACE Networks Ltd
Inspect this prefixRegistered address
NOW Building, Thames Valley Park Drive, Reading, Berkshire, RG6 1RB
Reading Berkshire RG6 1RB
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- B4:4D:43:4 /28
- Addresses in block
- 1,048,576
- Decimal range
- 198,243,933,749,248 to 198,243,934,797,823
- 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 B4:4D:43:40:00:00 and B4:4D:43:4F: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.