What happened
The Office of Foreign Assets Control on Friday added two Iran-based crypto exchanges, Shelbit and Aban Tether, to its Specially Designated Nationals list, alongside Siavash Kayvanpour, described by Treasury as the operator behind the underlying network. BeInCrypto first reported the designations. Treasury tied the platforms to crypto transfers moving on behalf of Iran's Islamic Revolutionary Guard Corps, a body already blocked under US counter-terrorism authorities.
The action names both corporate entities and the individual, a pattern OFAC has used repeatedly to reach the people running the rails, not just the front-end brands. US persons are now barred from any dealings with the designated parties, and any property in US jurisdiction is frozen. Foreign firms that keep transacting with them risk secondary sanctions.
Why it matters
This is the latest strike in a 2026 campaign that has focused less on wallets and more on the exchanges themselves. Aban Tether's name is not accidental. Iranian OTC desks have leaned heavily on USDT for cross-border settlement, and the Tether ticker has become shorthand for the dollar rails Tehran cannot reach through the banking system.
By naming Aban Tether directly, OFAC signals that the stablecoin corridor into and out of Iran is the surface it wants to shrink. Tether Ltd has cooperated with US authorities in prior cases, freezing addresses attached to sanctioned entities within hours of a designation. That precedent puts the issuer on the clock again.
Market impact
There is no listed token tied to Shelbit or Aban Tether, so the price read is indirect. USDT is the asset most exposed operationally, not by price. Tether's peg has absorbed prior OFAC actions without a wobble, and there is no reason to expect a different pattern here.