The OUI prefix D0:40:BE is registered to "NPO RPS LLC," a Moscow-based Russian electronics firm that trades under the brand INMATICS. The full legal name is ООО «Научно-производственное объединение разработки промышленных систем» — roughly "Scientific-Production Association for Industrial Systems Development," where RPS expands to Разработки Промышленных Систем. The registered IEEE address is in the Mosrentgen settlement on the southern edge of Moscow (108820, RU). The company's flagship product is the ПСУ Спутник А21 (PSU Sputnik A21), an embedded SNMP network management card (NMC) built as a Russian import-substitution drop-in replacement for APC Smart-UPS management slots (AP9630/AP9631/AP9640/AP9641). These cards carry the registered MAC addresses and are deployed in critical-infrastructure UPS systems — data centers, banks, hospitals, airports, power substations, and pipelines per vendor marketing. The company also produces battery-monitoring systems, discrete I/O modules, and environmental sensors, with stated annual production above 15,000 units. A naming caution: a separate, unrelated Moscow construction company (ООО НПО РПС, INN 7737128982, OKVED 41.20) shares the same Russian acronym but has no relation to this OUI registration; the MAC-registered entity is the INMATICS electronics firm (INN 7751058230, founded 2017). The Sputnik A21 management interface exposes SNMP v1/v2/v3, ModBus TCP/RTU, HTTP/HTTPS, SSH, Telnet, and RADIUS over 10/100 Ethernet. No NPO RPS / INMATICS-specific CVEs were found, though the broader APC Smart-UPS NMC ecosystem these cards replace has known critical vulnerabilities (the 2022 "TLStorm" set) whose applicability to the Sputnik A21 is not documented in public sources.
- IEEE assignment
- D0:40:BE → NPO RPS LLC [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 414)
- Registry / block size
- MA-L (24-bit OUI block) [Confirmed] — IEEE MA-L; present only in oui.csv, not mam.csv (MA-M) or oui36.csv (MA-S)
- Registered address
- Internal territory of the urban settlement of Mosrentgen, the settlement of the Mosrentgen factory, building 1/10, office 206, Moscow, RU 108820 [Confirmed] — IEEE MA-L
- Country
- RU (Russia) [Confirmed] — IEEE MA-L
- Vendor brand / trade name
- INMATICS (ИНМАТИКС); legal entity ООО НПО РПС [Confirmed] — https://inmatics.ru/company/
- Full legal name
- ООО «Научно-производственное объединение разработки промышленных систем» (LLC Scientific-Production Association for Industrial Systems Development); RPS = Разработки Промышленных Систем [Confirmed] — https://inmatics.ru/company/, https://krasnojarsk.meldana.com/catalog/Opcii/npo_rps_psu_sputnik_a21/
- Company status / founding
- active; legal entity registered 2017 in Moscow (INN 7751058230); team active since 2012 [Confirmed] — https://inmatics.ru/company/
- Website
- https://inmatics.ru/ [Confirmed] — https://inmatics.ru/. Note: a second domain nporps.ru resolves to a metal-fabrication subcontractor with a similar acronym but a different legal entity — NOT the MAC-registered firm.
- Device types
- embedded SNMP network management card (NMC) for UPS systems; battery-monitoring systems; discrete I/O modules; environmental sensors [Confirmed] — https://inmatics.ru/products/psu/psu-sputnik-a21/
- Notable product
- ПСУ Спутник А21 (PSU Sputnik A21) — SNMP network management card, a drop-in replacement for APC Smart-UPS NMC slots (AP9630/AP9631/AP9640/AP9641); stated annual production >15,000 units [Confirmed] — https://inmatics.ru/products/psu/psu-sputnik-a21/, https://www.treolan.ru/news/vendor_news/masshtabnoe-obnovlenie-karty-setevogo-upravleniya-psu-sputnik-a21-dlya-ibp-apc-smart-ups
- Protocols / interfaces
- SNMP v1/v2/v3, ModBus TCP/RTU, HTTP/HTTPS, Telnet/SSH, RADIUS, SysLog, ICMP, RNDIS, DHCP, NTP, SMTP; physical: Ethernet 10BASE-T/100BASE-TX, miniUSB, 2x USB, microSD [Confirmed] — https://inmatics.ru/products/psu/psu-sputnik-a21/
- Security context
- vendor claims SNMP v3, HTTPS with SSL cert upload, SSH, authenticated Telnet, selective protocol disabling, role-based access, brute-force protection, action logging, and a built-in firewall. No NPO RPS / INMATICS-specific CVEs found. The APC Smart-UPS NMC ecosystem these cards replace has known critical CVEs (TLStorm: CVE-2022-22806, CVE-2022-22805, CVE-2022-0715) affecting APC's own NMCs; applicability to the Sputnik A21 replacement card is undocumented in public sources. [Likely] — https://inmatics.ru/products/psu/psu-sputnik-a21/, https://www.techtarget.com/searchsecurity/news/252514305/Researchers-uncover-vulnerabilities-in-APC-Smart-UPS-devices
- IEEE registration date
- Unknown — IEEE publishes NO assignment/registration date for OUI/MAC prefixes; maclookup.app's "first seen: September 8, 2022" is a third-party database artifact, not an IEEE fact [Confirmed null] — https://maclookup.app/vendors/npo-rps
- Naming caution
- two unrelated Moscow entities share the НПО РПС acronym — (1) the MAC-registered electronics firm ООО НПО РПС / INMATICS (INN 7751058230); (2) a construction company ООО НПО РПС (INN 7737128982, OKVED 41.20) at a different address with no relation to this OUI [Confirmed] — https://inmatics.ru/company/, https://spark-interfax.ru/moskva-chertanovo-tsentralnoe/ooo-npo-rps-inn-7737128982-ogrn-1037737000564-ec3af6c6f75c4946950d644fb7b99213
- Analyst note
- a Russian import-substitution NMC for APC Smart-UPS slots; treat the D0:40:BE prefix as identifying these UPS management cards in critical-infrastructure UPS deployments.