- Prefix
- 00:21:3A 00-21-3A 0021.3A
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:21:3A:00:00:00 – 00:21:3A:FF:FF:FF
- Organization
- Winchester Systems Inc.
- Registered address
- 101 Billerica Avenue, Billerica, MA 01862, US
- Country
- United States (US)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:21:3A:00:00:00
Winchester Systems Inc. holds 1 block in total: see all. Source: IEEE Registration Authority public listing.