The Nobitex dilemma: How Iran's biggest crypto exchange stays off the OFAC blacklist

Nobitex, Iran’s largest local crypto exchange, processes billions in flows and served as a conduit for state activity — including an estimated $5 billion in observed volume (2025–Mar 2026) and at least $507 million in USDT purchases tied to the central bank — while claiming roughly 11 million retail users. Despite investigations linking the platform to sanctioned actors and leaked code showing evasion tools, OFAC has not added Nobitex to the SDN List. The Treasury appears to rely on targeted measures (address-level sanctions, designations of exchanges, individuals and OTC brokers) and treats Iranian domestic exchanges as blocked financial institutions, reducing the marginal effect of an individual SDN designation. Market impact: continued use of local exchanges plus offshore “exit” points sustains sanctioned states’ access to dollar liquidity, complicates enforcement, and raises the prospect that sanctions pressure could harm millions of ordinary users if broader designations were pursued.