The open-source match for the hierarchy path is the Special Communications and Information Service of the Federal Protective Service of the Russian Federation (Spetssvyaz FSO). As of March 2026, the official FSO site lists its head as Deputy Director Vasily Aleksandrovich Zaplatkin and gives the service’s public address as 4 Bolshoy Kiselny Lane, Moscow. ([fso.gov.ru](https://fso.gov.ru/struct/sssi/?utm_source=openai))
The supplied address, 17 1st Mytishchinskaya Street, does not match the FSO service’s published Moscow address. That location is used on the official site of FSUE “Main Center of Special Communication” (GTsSS, also branded Spetssvyaz Rossii), and a UK sanctions notice dated 24 February 2025 identifies the same entity at the same address. This indicates a likely conflation between FSO Spetssvyaz and the separate state special-courier enterprise. ([cccb.ru](https://www.cccb.ru/about/contacts/?utm_source=openai))
Open sources tie 17 1st Mytishchinskaya to GTsSS as a logistics and administrative hub, not a confirmed FSO command site. GTsSS describes itself as a federal postal organization with special statutory tasks for secret and other special consignments; its public materials advertise transport of defense cargo, dangerous goods, and cryptographic protection items. Government and company sources also list GTsSS as a strategic organization. ([cccb.ru](https://www.cccb.ru/about/?utm_source=openai))
Official FSO material shows that Spetssvyaz FSO operates through administrations and centers of special communications and information across Russia’s regions. FSO recruitment pages for special-purpose communications centers list radio-relay, satellite, cable, and telephone specialties and describe their role as maintaining resilient special communications, indicating a nationwide protected communications network rather than a single Moscow-only office. ([fso.gov.ru](https://fso.gov.ru/struct/sssi/?utm_source=openai))
Confidence is high that the named organization is FSO Spetssvyaz, but low that 17 1st Mytishchinskaya is its headquarters. The strongest non-ambiguous open sources support 4 Bolshoy Kiselny Lane as the FSO service’s public HQ and 17 1st Mytishchinskaya as the GTsSS headquarters/contact address. Public procurement indexes do place at least some military units such as 69793 and 28677 under Spetssvyaz FSO administrative control, but the full 17-site reporting chain in the supplied metadata is not publicly confirmed. ([fso.gov.ru](https://fso.gov.ru/struct/sssi/?utm_source=openai))