MAC address vendor
Airvana, Inc. MAC Prefix: Vendor Identified, Device Unknown
Primary prefix
00:05:B9
Block
MA-L
Summary
- // what this is
- Airvana is registered to MAC prefix
00:05:B9in the IEEE OUI database. When a device's MAC address begins with00:05:B9, that block was registered by Airvana — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- An exact
00:05:B9match fixes the first-byte Group and Local bits at zero; 24 suffix bits allow 16,777,216 possible values, not a device or shipment count. The assignment indicates a registry association, not current operator, deployment, product, or security state.
[ 01 ] — Context
About this vendor.
Updated · Confidence: High · 2 sources · How this page is checked
A MAC address beginning with 00:05:B9 matches the IEEE MA-L assignment to Airvana, Inc.; the record does not identify a device or product. The assignment identifies a registry entry, not who currently operates an address or whether it is in use.
The prefix covers 24 bits of a 48-bit MAC address, leaving 24 suffix bits, or 16,777,216 possible suffix values. That is the size of the address space beneath the prefix, not a count of devices, shipments, or observed addresses.
The first octet is 00. Its Group and Local bits are both zero, so both are fixed for an exact 00:05:B9 match. Changing either bit produces a different prefix. RFC 7042 explains the roles of these bits and the relationship between 48-bit MAC identifiers and assigned prefixes.
- Device identification
- Unknown; the assignment record does not name a device or product. [Unknown]
- Match
00:05:B9is a 24-bit prefix in a 48-bit MAC address; 24 suffix bits remain. [Confirmed]- Interpretation
- The first-byte Group and Local bits are both zero and fixed in an exact prefix match. [Confirmed]
- Company
- Airvana, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:05:B9[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Products
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- US [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
[ 02 ] — OUI prefixes
Assignments by IEEE.
1
// registered prefixes1
[ 03 ] — Related