Calix — 22 prefixes (MA-L + a CID); broadband access, OUI = brand (overwhelmingly ISP-deployed)
Summary
- // what this is
- Calix is registered to MAC prefix
00:06:31and 21 more in the IEEE OUI database. When a device's MAC address begins with00:06:31, that block was registered by Calix — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A Calix MAC on a subscriber LAN usually means the carrier's GPON ONT or gateway; the OUI is the Calix brand, and the CID block is not globally unique.
About this vendor.
Calix holds about 22 IEEE blocks — MA-L plus one CID (Company Identifier, which is explicitly not intended for globally unique applications) — registered as "Calix Inc." in San Jose, CA, with legacy blocks also under "Calix Networks," covering roughly 369.1 million addresses. Verified samples include 00:06:31, EC:4F:82, CC:BE:59, 44:65:7F, and F8:85:F9, plus the legacy "Calix Networks" 00:02:5D. These OUIs appear on fiber/GPON access (OLTs, ONTs), residential gateways (the GigaSpire and GigaCenter lines), Wi-Fi systems, and broadband CPE. Calix acquired Occam Networks in 2011. A Calix OUI maps to the brand, but the gear is overwhelmingly ISP-deployed residential and access equipment — so a Calix MAC on a subscriber LAN usually means the carrier's GPON ONT or gateway, a similar ISP-supplied angle to the Sercomm/Sagemcom CPE cluster (though Calix is the actual brand). Note the CID block (DA:9D:49) is not globally unique and should be treated cautiously in asset-uniqueness logic. For triage, a Calix MAC on a subscriber LAN usually means the carrier's GPON ONT or gateway; the OUI is the Calix brand, and the CID block is not globally unique.
- IEEE assignment
- ~22 blocks → "Calix Inc." (legacy blocks under "Calix Networks"), registered San Jose, CA, US [Confirmed] — IEEE MA-L + CID
- Registry / block size
- MA-L plus one CID (not for globally unique applications); ~22 blocks (~369.1M addresses) [Confirmed] — maclookup.app (IEEE-sourced)
- HQ / country
- San Jose, CA, US (current registrant address; company has Petaluma/Plano history) [Confirmed] — maclookup.app
- Company status
- active; acquired Occam Networks (2011) [Confirmed] — calix.com
- Device types
- fiber/GPON access (OLTs, ONTs), residential gateways (GigaSpire/GigaCenter), Wi-Fi systems, broadband CPE [Confirmed] — maclookup.app
- Notable products
- GigaSpire BLAST, GigaCenter, AXOS/E-series OLTs, Calix ONTs
- Verified prefix sample
- 00:06:31, EC:4F:82, CC:BE:59, 44:65:7F, F8:85:F9; legacy "Calix Networks" 00:02:5D [Confirmed] — maclookup.app, macverify.com
- Special note
- OUI = brand, but gear is overwhelmingly ISP-deployed residential/access equipment — similar ISP-supplied angle to Sercomm/Sagemcom (though Calix is the actual brand). The CID block (DA:9D:49) is NOT globally unique — treat cautiously in asset-uniqueness logic. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- Occam Networks (acquired 2011), Calix Networks (legacy registrant name)
- Analyst note
- A Calix MAC on a subscriber LAN usually means the carrier's GPON ONT or gateway; the OUI is the Calix brand, and the CID block is not globally unique.