The OUI prefix 98:50:A3 is registered to SIGNALTEK JSC (AO Signaltek / АО Сигналтек), a Moscow-based Russian telecommunications-equipment manufacturer, as a single MA-L (MAC Address Block Large) allocation. The registrant maps to a real corporate entity — OGRN 1117746741210, INN 7722756624, incorporated 2011-09-20 — that designs and builds domestic Russian network gear: access and Ethernet hardware, base stations, IP gateways, data-storage systems, and SORM (lawful-intercept) hardware-software complexes. The most important caveat for anyone classifying this OUI is the sanctions context: SIGNALTEK JSC is on the US OFAC Specially Designated Nationals (SDN) list under Executive Order 14024 (Russian Harmful Foreign Activities Sanctions), effective 2023-09-14, and also appears on the US Trade Consolidated Screening List, SAM Procurement Exclusions, and Ukraine war-sanctions lists; its SORM/surveillance manufacturing is the stated basis for the designation. A second data-quality trap: do NOT conflate this entity with the "SignalTEK" cable/network-tester product line sold by TREND Networks Ltd (UK, formerly IDEAL Networks) — that is an unrelated brand with no OUI registration under this prefix. As with every OUI, IEEE publishes no registration date; the "18 November 2021" date shown by third-party MAC lookup tools is a database-ingest artifact, not an IEEE fact.
- IEEE assignment
- 98:50:A3 → SIGNALTEK JSC, MA-L block [Confirmed] — IEEE oui.csv (enrichment/registries/oui.csv), maclookup.app
- Registry / block size
- MA-L (24-bit OUI, ~16.8M addresses) [Confirmed] — IEEE oui.csv; single entry, not present in MA-M (mam.csv) or MA-S (oui36.csv)
- Org name
- SIGNALTEK JSC (AO Signaltek / АО Сигналтек) [Confirmed] — IEEE oui.csv, OpenSanctions, maclookup.app
- Registry address
- 2 Ivovaya street, floor 4, office 1, Room 45, Moscow, 129329, RU [Confirmed] — IEEE oui.csv (corroborated by OpenSanctions Moscow address records)
- HQ / country
- Russia (Moscow) [Confirmed] — IEEE oui.csv, OpenSanctions
- Company status
- active; corporate registration OGRN 1117746741210, INN 7722756624, incorporated 2011-09-20 (Russian Federal Tax Service via OpenSanctions — a corporate registration date, NOT an IEEE/OUI date) [Confirmed] — OpenSanctions
- Device types
- domestic Russian telecom equipment — access/Ethernet devices, base stations, IP gateways, data-storage systems, SORM (lawful-intercept) hardware-software complexes [Confirmed] — Expocentr (Svyaz-2025 exhibitor catalog), TAdviser
- Website
- signaltec.ru (direct fetch returned a certificate error; confirmed via OpenSanctions + exhibition records) [Likely] — OpenSanctions, Expocentr
- No IEEE date
- IEEE public OUI data (Registry, Assignment, Organization Name, Organization Address) publishes NO assignment date. The "18 November 2021" shown by maclookup.app is a database-ingest artifact, not an IEEE registration date. [Confirmed] — maclookup.app
- Security / sanctions context
- SIGNALTEK JSC is on the US OFAC SDN list under E.O. 14024 (Russian Harmful Foreign Activities Sanctions), effective 2023-09-14; also on US Trade CSL, SAM Procurement Exclusions, and Ukraine war-sanctions lists. SORM/lawful-intercept manufacturing is the stated basis. General Director (as of 2023-09-08): Aleksey Aleksandrovich Alyasev. [Confirmed] — OpenSanctions, ofac.treasury.gov/recent-actions/20230914, Lursoft sanctions record
- Name disambiguation
- DISTINCT from the "SignalTEK" cable/network-tester product line by TREND Networks Ltd (UK, formerly IDEAL Networks, HQ High Wycombe) — no OUI registration found under that brand; this entry maps to the Russian JSC, not the UK tester brand. [Confirmed] — trend-networks.com, OpenSanctions, maclookup.app
- Analyst note
- a 98:50:A3 OUI on a globally-administered address identifies genuine SIGNALTEK JSC hardware (a sanctioned Russian telecom/surveillance vendor) — relevant for asset classification and supply-chain/compliance screening.