MAC Address Lookup

B810 SPA 20:B3:7F:0

20:B3:7F:0 is a 28-bit MA-M MAC address block registered to B810 SPA in IT.

Vendor

B810 SPA

MA-M · 28-bit
20:B3:7F:0

Unicast · Universally administered (U/L bit clear)

Matched prefix
20:B3:7F:0
Match
MA-M assignment
Address range
20:B3:7F:00:00:00 – 20:B3:7F:0F:FF:FF
Addresses in block
1,048,576
Country
IT
Organization address
Via Enzo Lazzaretti, 2/1 REGGIO EMILIA Reggio Emilia IT 42122
First registered
Mar 16, 2026

Formats

  • Plain hex 20B37F0
  • Colon-separated 20:B3:7F:0
  • Hyphen-separated 20-B3-7F-0
  • Cisco dot notation 20B3.7F0

Prefix lineage

This prefix has changed hands. Dates are when each change was first observed in public registration data (runZero mac-tracker).

  1. Chelsio Communications Inc Mar 16, 2026
  2. B810 SPA Mar 26, 2026