4A:19:1B:00:00:00 to 4A:19:1B:FF:FF:FF
ZigBee Alliance
Inspect this prefixRegistered address
508 Second Street, Suite 206
Davis CA 95626
Block details
- Registry
- CID, Company ID (CID)
- Prefix
- 4A:19:1B /24
- Addresses in block
- 16,777,216
- Decimal range
- 81,471,687,622,656 to 81,471,704,399,871
- Address type
- Unicast, locally administered
What this block covers
A 24 bit identifier that looks like an OUI but is explicitly not for globally unique addresses. The local bit is set, so CID addresses are locally administered by definition.
Any MAC address between 4A:19:1B:00:00:00 and 4A:19:1B:FF:FF:FF belongs to this assignment. The registrant chooses the remaining 24 bits, so the same prefix can appear on very different products from the same company.