Sonim Technologies holds at least one confirmed MA-L block — 00:24:A3 — registered as "Sonim Technologies Inc" at 1875 S. Grant Street, San Mateo, California; the registry also lists a second, San Diego–address block (74:4D:DC, "Sonim Technologies, Inc"), so the footprint is small but not single-block. These OUIs appear on ultra-rugged smartphones and feature phones built for construction, field service, and public-safety/first-responder use. The org status changed materially in early 2026: stockholders approved the sale (special meeting 2025-12-30) and the company sold substantially all of its rugged mobile-phone and hotspot business to NEXA, closing 2026-01-23 for ~$15M (less working-capital adjustments); NEXA acquired the Sonim brand and rugged device portfolio and continues to manufacture, market, and sell Sonim-branded rugged phones and mobile-broadband products. The former public parent then renamed to DNA X, Inc. and pivoted to a crypto/DeFi trading platform, changing its NASDAQ ticker from SONM to DNAX. So the Sonim brand and devices live on under NEXA, while "Sonim Technologies"/DNA X is now a crypto company. The key analyst point: 00:24:A3 still maps to the Sonim brand, but newer Sonim-branded gear ships under NEXA's stewardship, and like other small phone makers Sonim devices often surface under their chipset vendor's OUI (Qualcomm or MediaTek) for Wi-Fi rather than a Sonim prefix. For triage, a Sonim OUI marks a rugged handset (field or first-responder), but the absence of a Sonim OUI doesn't rule out a Sonim device — check for chipset-vendor (Qualcomm/MediaTek) Wi-Fi OUIs too.
- IEEE assignment
- ≥1 prefix → "Sonim Technologies Inc" (00:24:A3), registered San Mateo, CA; a second block 74:4D:DC ("Sonim Technologies, Inc", San Diego) also greps in oui.csv [Confirmed] — IEEE MA-L (oui.csv, 2026-06-11)
- Registry / block size
- MA-L; 2 blocks present in oui.csv (00:24:A3, 74:4D:DC); small footprint [Confirmed] — IEEE registry (oui.csv)
- HQ / country
- 1875 S. Grant Street, San Mateo, CA 94402, US (registry holder; note 2026 divestiture below) [Confirmed] — IEEE registry (oui.csv)
- Company status
- rugged mobile-phone + hotspot business SOLD to NEXA, closed 2026-01-23 for ~$15M (stockholder approval 2025-12-30); NEXA continues the Sonim brand and rugged devices. Former parent renamed DNA X, Inc. and pivoted to a crypto/DeFi trading platform (NASDAQ ticker SONM → DNAX). [Confirmed] — Sonim/DNA X IR; Barchart/Investing.com (Dec 2025–Jan 2026)
- Device types
- ultra-rugged smartphones and feature phones (construction/field service/public safety/first responders) [Confirmed] — sonimtech.com
- Notable products
- Sonim XP-series rugged phones (now under NEXA)
- Verified prefix sample
- 00:24:A3 [Confirmed] — IEEE registry (oui.csv)
- Special note
- 00:24:A3 still maps to the Sonim brand, but the rugged business now belongs to NEXA (Jan 2026), which continues Sonim-branded devices; the former parent is now the crypto firm DNA X, Inc. Like other small phone makers, Sonim devices often surface under their chipset vendor's OUI (Qualcomm/MediaTek) for Wi-Fi rather than a Sonim prefix. Mobile devices also commonly randomize Wi-Fi MACs. The IEEE registry publishes no assignment dates, so none is stated here. [Confirmed]
- Related vendors
- NEXA (acquired Sonim rugged business + brand, 2026); DNA X, Inc. (former parent, now crypto); Bullitt Group / CAT phones (defunct comparable); Qualcomm/MediaTek (chipset vendors)
- Analyst note
- A Sonim OUI marks a rugged handset (field/first-responder), now produced under NEXA; absence of a Sonim OUI doesn't rule out a Sonim device — check for chipset-vendor (Qualcomm/MediaTek) Wi-Fi OUIs too.