B4:37:D1:20:00:00 to B4:37:D1:2F:FF:FF
Fibersystem AB
Inspect this prefixRegistered address
Gårdsfogdevägen 18B
Bormma Stockholm 16866
Block details
- Registry
- MA-M, MAC Address Block Medium (OUI-28)
- Prefix
- B4:37:D1:2 /28
- Addresses in block
- 1,048,576
- Decimal range
- 198,151,824,736,256 to 198,151,825,784,831
- 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 B4:37:D1:20:00:00 and B4:37:D1:2F: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.