Zhejiang Dahua Technology Co., Ltd. — 31 prefixes (MA-L)

Dahua is one of the world's two largest video-surveillance manufacturers, and its hardware footprint is reflected in 31 MA-L blocks registered to "Zhejiang Dahua Technology Co., Ltd." in the cached IEEE registry. The registry address is No. 1199 Bin'An Road (rendered variously as Waterfront Road / BinAn Road), Binjiang District, Hangzhou, Zhejiang, CN 310053; a newer variant on a handful of blocks (407A:A4, F8:CE:07, 4C:99:E8, 30:DD:AA) points to Building 1, No. 1399 Binxing Road, Changhe Street, Binjiang District. These prefixes appear across the full Dahua catalogue — IP and PTZ network cameras, thermal cameras, HDCVI cameras, DVRs/NVRs, video intercoms and doorbells, access-control and facial-recognition terminals, alarm systems, and intelligent-traffic cameras — which is why a single consolidated vendor entry is far more useful than minting dozens of near-identical per-prefix pages. The operationally critical context for any Dahua OUI work is regulatory and security risk, not registration mechanics. Dahua is named in NDAA Section 889 (banning federal purchase/use for public-safety, government, critical-infrastructure, and national-security purposes), was placed under an FCC equipment-authorization ban in November 2022, and appears on the U.S. Department of Defense Section 1260H list of "Chinese military companies." CISA has issued multiple ICS advisories for Dahua products, including CVE-2021-33044 and CVE-2021-33045 (CVSS 9.8, authentication bypass via crafted packets) — both added to CISA's Known Exploited Vulnerabilities catalog on evidence of active exploitation — plus ICSA-22-193-01 (facial-recognition terminal) and the earlier ICSA-17-124-02. The practical takeaway: a Dahua OUI reliably identifies genuine Dahua hardware for asset classification, and any network surfacing one warrants elevated scrutiny — devices may be unpatched, remotely reachable without authentication, and explicitly restricted in U.S. federal and critical-infrastructure contexts. One data-quality caveat: a 32nd the IEEE MA-L registry row (A8:CA:87) belongs to the distinct subsidiary "ZHEJIANG DAHUA ZHILIAN CO.,LTD" at a different Hangzhou address and is deliberately excluded from this primary entity's prefix list.

IEEE assignment

31 MA-L prefixes → Zhejiang Dahua Technology Co., Ltd., registered Hangzhou, Zhejiang, CN [Confirmed] — IEEE MA-L (cached copy, fetched 2026-06-11): https://standards-oui.ieee.org/oui/oui.csv

Registry / block size

MA-L (24-bit OUI); 31 IEEE prefixes for the primary entity. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact.

[Confirmed] — IEEE MA-L: https://standards-oui.ieee.org/oui/oui.csv

Verified prefixes (all MA-L, Zhejiang Dahua Technology Co., Ltd.)

74:C9:29, 6C:1C:71, 08:ED:ED, E0:2E:FE, 40:7A:A4, 5C:F5:1A, FC:5F:49, 24:52:6A, 90:02:A9, E0:50:8B, C4:AA:C4, A0:BD:1D, 9C:14:63, BC:32:5F, 38:AF:29, F8:CE:07, 4C:99:E8, 8C:E9:B4, 14:A7:8B, 4C:11:BF, 64:FD:29, 98:F9:CC, D4:43:0E, F4:B1:C2, 3C:E3:6B, FC:B6:9D, E4:24:6C, C0:39:5A, B4:4C:3B, 3C:EF:8C, 30:DD:AA

[Confirmed] — IEEE MA-L: https://standards-oui.ieee.org/oui/oui.csv

Third-party prefix count

third-party MAC lookups (maclookup.app, mac-address.alldatafeeds.com) report ~27 MA-L blocks — lower than the 31 in the cached IEEE CSV, a typical third-party-snapshot lag. The first-party registry count of 31 is authoritative. [Likely] — https://maclookup.app/vendors/zhejiang-dahua-technology-co-ltd , https://mac-address.alldatafeeds.com/statistics/company/15161

MA-M / MA-S registrations

none. the IEEE MA-M registry (28-bit) and the IEEE MA-S registry (36-bit) contain no entries for Zhejiang Dahua Technology Co., Ltd. (Two the IEEE MA-M registry rows match "dahua" but are unrelated entities: 40:2C:76:1 = Shanghai Dahua Scale Factory; 4C:EA:41:C = hogotech.)

[Confirmed] — IEEE MA-M / MA-S (cached): https://standards-oui.ieee.org/oui28/mam.csv , https://standards-oui.ieee.org/oui36/oui36.csv

HQ / country

No. 1199 Bin'An Road (Waterfront Road / BinAn Road), Binjiang District, Hangzhou, Zhejiang, CN 310053 (registry address). Newer variant on some blocks (40:7A:A4, F8:CE:07, 4C:99:E8, 30:DD:AA): Building 1, No. 1399 Binxing Road, Changhe Street, Binjiang District, Hangzhou, CN 311200. [Confirmed] — IEEE MA-L: https://standards-oui.ieee.org/oui/oui.csv ; vendor: https://www.dahuasecurity.com/about-dahua/brand-introduction

Company status

active; publicly listed on Shenzhen Stock Exchange (SZSE: 002236) since May 2008; 22,000+ employees, products deployed in 180+ countries. [Confirmed] — https://www.dahuasecurity.com/about-dahua/brand-introduction

Device types

IP / PTZ / thermal / HDCVI network cameras, DVRs and NVRs, video intercoms and doorbells, access-control and facial-recognition terminals, alarm systems, intelligent-traffic cameras, and associated AIoT platforms.

[Confirmed] — https://www.dahuasecurity.com/products/allProducts , https://www.dahuasecurity.com/about-dahua/brand-introduction

Registration date

Unknown — IEEE publishes no registration dates in the IEEE MA-L registry / the IEEE MA-M registry / the IEEE MA-S registry; no date field exists in the cached files. A third-party "date registered" of 26 Jul 2011 (and a 19 Oct 2023 "last updated") appears on maclookup.app but is a database artifact and must NOT be attributed to IEEE.

[Unknown] — no first-party source; third-party artifact only: https://maclookup.app/vendors/zhejiang-dahua-technology-co-ltd

Regulatory / security context

NDAA Section 889 (named; federal purchase/use prohibition); FCC equipment-authorization ban (Nov 2022); DoD Section 1260H "Chinese military company" list (Oct 5, 2022); CISA ICS advisories incl. CVE-2021-33044 / CVE-2021-33045 (CVSS 9.8 auth-bypass, in CISA KEV), ICSA-22-193-01 (ASI7213X-T1 facial-recognition terminal), ICSA-17-124-02 (DVRs/IP cameras). [Confirmed] — https://www.cisa.gov/news-events/ics-advisories/icsa-22-193-01 , https://www.cisa.gov/news-events/ics-advisories/icsa-17-124-02 , https://www.securityweek.com/cisa-warns-of-exploited-vulnerabilities-impacting-dahua-products/ , https://www.congress.gov/crs-product/LSB10895

Founding year

Unknown — not stated on the vendor brand-introduction page and not confirmed from any primary source this pass. [Unknown] — no source

Related vendors

ZHEJIANG DAHUA ZHILIAN CO.,LTD (subsidiary; holds the separate MA-L block A8:CA:87 at a different Hangzhou address — deliberately excluded from this entry's prefix list). [Confirmed] — IEEE MA-L: https://standards-oui.ieee.org/oui/oui.csv

Analyst note

A Dahua OUI on a globally-administered address identifies genuine Dahua hardware; any asset surfacing one warrants elevated scrutiny given active-exploitation CVEs and U.S. federal / critical-infrastructure restrictions. Do not surface the third-party 2011 "date registered" as an IEEE registration date.