Advance Security Electronics — 90:6C:4B (MA-L)

The OUI prefix 90:6C:4B is assigned to Advance Security Electronics under IEEE's MA-L (MAC Address Block Large) registry class, the 24-bit allocation that reserves roughly 16.77 million addresses to a single organization. The IEEE registry lists the holder's address as 8228 NW South River Dr, Medley, FL 33166, United States — a South Florida location independently corroborated by a business-directory listing for the company. Advance Security Electronics is a physical-security firm whose public material describes IP and CCTV cameras, network video recorders (NVR), DVRs, and biometric access-control systems; on a network, a device presenting 90:6C:4B is therefore most plausibly a camera, recorder, or access appliance rather than a general-purpose computer. Whether the company manufactures its own hardware or labels OEM product is not settled by public sources: holding a dedicated MA-L block is consistent with own-brand production, but no specific manufactured model is publicly documented, so the OEM-versus-reseller role is left open here. One data-quality caveat governs the date: maclookup.app displays "19 June 2023" for this prefix, but that is a third-party database artifact — IEEE's public OUI data (the IEEE MA-L registry columns: Registry, Assignment, Organization Name, Organization Address) publishes no assignment or registration date at all, and the value must never be presented as an IEEE registration date. No CVEs, Shodan exposure reports, or threat-intelligence mentions were found for the vendor or the prefix, and the company is not on any US covered-entity list (it is unrelated to Hikvision, Dahua, or Hytera).

IEEE assignment

90:6C:4B → Advance Security Electronics, Medley, FL, US [Confirmed] — IEEE the IEEE MA-L registry line 40 (MA-L); corroborated maclookup.app/macaddress/906C4B

Registry / block type

MA-L (24-bit OUI); single block (~16.77M addresses) [Confirmed] — IEEE the IEEE MA-L registry (Registry column = MA-L); maclookup.app/vendors/advance-security-electronics

Registered address / country

8228 NW South River Dr, Medley, FL 33166, US [Confirmed] — IEEE the IEEE MA-L registry line 40; second-angle corroboration via HialeahDirect.us directory listing (8228 Northwest South River Drive, Medley, FL 33166; +1 305 386 3665)

Registration date

Unknown — IEEE publishes no assignment/registration date in the OUI registry. The "19 June 2023" shown on maclookup.app is a third-party database artifact, NOT an IEEE fact, and must not be surfaced as a registration date.

[Unknown] — IEEE the IEEE MA-L registry has no date column; artifact noted at maclookup.app/vendors/advance-security-electronics

Also in MA-M / MA-S

No — prefix not present in the IEEE MA-M registry (MA-M) or the IEEE MA-S registry (MA-S) [Confirmed] — local registry files the IEEE MA-M registry, the IEEE MA-S registry

Company status

active as of June 2026 (vendor website live in search results; directory listing self-marked "Verified Authentic Page Published by Owner"); Florida incorporation indicated by a Sunbiz search hit (entity P200000355290) though the Sunbiz detail page returned 403

[Likely] — single-angle, not independently re-fetched; advance-security-electronics.hialeahdirect.us; search.sunbiz.org

Device types

IP/CCTV cameras (incl. Panovu multi-sensor / night-vision), NVR, DVR, biometric access control, PoE network recorders [Likely] — vendor site advancesecurityelectronics.com and facebook.com/advancesselectronics reported via secondary references; direct fetch of the vendor site returned connection errors this session

OEM vs. reseller

Unknown — company presents as a South Florida physical-security integrator/reseller; a dedicated MA-L block is consistent with own-brand or OEM-labeled hardware, but no specific manufactured model is publicly documented, so the role is unconfirmed. [Unknown] — no source confirms manufacturer status

Website

https://advancesecurityelectronics.com/ (domain confirmed live in search results June 2026; direct fetch errored this session) [Likely] — single-angle; advance-security-electronics.hialeahdirect.us

Threat intel / CVEs

None found — no CVEs, Shodan exposure, or threat-intel mentions for the vendor or 90:6C:4B [Confirmed (absence-of-evidence)] — web search returned no results

US covered list

Not listed — unrelated to Hikvision, Dahua, Hytera or subsidiaries; no restriction found [Confirmed] — web search; no entry found

Analyst note

90:6C:4B on a network most likely indicates an IP camera, NVR, DVR, or access-control appliance from a small South Florida physical-security firm. No known CVEs or covered-list restrictions. OEM vs. resale role is unresolved from public sources.