MAC address vendor
Alcatel Alenia Space Italia: MAC prefix 00:15:3F identifies an IEEE registry assignment
Primary prefix
00:15:3F
Block
MA-L
Summary
- // what this is
- Alcatel Alenia Space Italia is registered to MAC prefix
00:15:3Fin the IEEE OUI database. When a device's MAC address begins with00:15:3F, that block was registered by Alcatel Alenia Space Italia — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- 00:15:3F is a 24-bit prefix with 24 suffix bits (16,777,216 possible suffix values). The first octet 00 has Group bit 0 and Local bit 0. These bits are fixed for an exact literal prefix match; toggling either creates a different prefix. Possible suffix values are not a device or shipment count.
[ 01 ] — Context
About this vendor.
Updated · Confidence: High · 2 sources · How this page is checked
A MAC address beginning with 00:15:3F matches the IEEE MA-L assignment to Alcatel Alenia Space Italia. The record identifies the organization holding the prefix; it does not establish which device, product, or vendor currently uses a matching address.
This is a 24-bit prefix, leaving 24 bits, or 16,777,216 possible suffix values. That is the size of the address space beneath this prefix, not a count of devices made, shipped, or observed.
The first octet is 00, so the Group and Local bits are both zero. RFC 7042 states that the Local bit is zero in assigned OUIs and longer MAC prefixes, while the Group bit is unspecified. A captured match supports the registry attribution only.
- Registry match
- Alcatel Alenia Space Italia — MA-L assignment
00:15:3F[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv - Device or product
- Not established for this exact prefix [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Address interpretation
- 24-bit prefix; 24 suffix bits, allowing 16,777,216 possible suffix values [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- First-octet bits
- Group bit 0 and Local bit 0 for
00; toggling either changes the prefix [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Company
- Alcatel Alenia Space Italia [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:15:3F[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Total prefixes
- 1 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- Italy [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Notable products
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Website
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Organization status
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Historic prefix
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
[ 02 ] — OUI prefixes
Assignments by IEEE.
1
// registered prefixes1
[ 03 ] — Related