16th FSB Center
Identity
The metadata most plausibly matches the FSB-controlled military campus of unit 61608 on 3-ya Radialnaya Street in south Moscow, near the Tsaritsyno/Biryulyovo area. Registry mirrors based on Russian public records list Federal State Institution "Military Unit 61608" at 3-ya Radialnaya 2, Moscow, with the FSB as founder; one such profile still showed the unit active as of February 15, 2026. The Space Review separately places unit 61608 at "Tsaritsyno" and lists it as an active FSB station. ([companies.rbc.ru](https://companies.rbc.ru/id/1037737003798-federalnoe-gosudarstvennoe-kazennoe-uchrezhdenie-vojskovaya-chast-61608/))
HQ status
Whether this exact compound is the overall headquarters of the FSB 16th Center is not publicly settled. In a December 2023 update, the UK government identified FSB Center 16 primarily as military unit 71330, and a 2022 U.S. indictment likewise described "Center 16" as military unit 71330. Russian registry mirrors also show unit 71330 as a separate FSB-founded institution in Moscow. By contrast, open-source site mapping lists unit 61608 as an active Moscow/Tsaritsyno station within the same broader system. ([gov.uk](https://www.gov.uk/government/publications/russias-fsb-malign-cyber-activity-factsheet/russias-fsb-malign-activity-factsheet?utm_source=openai))
Infrastructure
Open urban-planning records from Moscow describe an "administrative-service military town" for unit 61608 along 3-ya Radialnaya and enumerate multiple retained low-rise buildings inside it, indicating a sizable enclosed campus rather than a single office block. The Space Review published imagery analysis showing an antenna complex at unit 61608 near Tsaritsyno Park. A public valuation document also cites a prohibited-zone decision for the 3-ya Radialnaya site issued by the FSB and the Russian government, consistent with a secured installation. ([vestnikmoscow.mos.ru](https://vestnikmoscow.mos.ru/wp-content/uploads/2023/09/zhurnal-vestnik-moskvy-%E2%84%96-52.pdf?utm_source=openai))
Mission
The site’s exact day-to-day role is not officially disclosed, but reliable public attribution places the wider 16th Center in signals intelligence and cyber operations. The UK government says Center 16 is responsible for intercepting, decrypting, and processing electronic messages and for technical penetration of foreign targets. For this specific Moscow location, The Space Review links unit 61608 to the Rebus-Ts ground communications center and treats it as an active FSB satellite-interception/eavesdropping node. ([gov.uk](https://www.gov.uk/government/publications/russias-fsb-malign-cyber-activity-factsheet/russias-fsb-malign-activity-factsheet?utm_source=openai))
Network
Open-source mapping places unit 61608 within a broader FSB communications-intercept network that includes active sites at Nerastannoye in Moscow region (51952), Georgiyevskaya in Pskov region (49911), and Verbnoye in Kaliningrad region (83521). In that mapping, 51952 is labeled the network headquarters and 61608 a Moscow station, so the safest public assessment is that the Tsaritsyno site is a major node in the 16th Center system, not a uniquely confirmed sole headquarters. Exact command relationships beyond that remain unconfirmed in open sources. ([thespacereview.com](https://www.thespacereview.com/article/4923/1))