 The firm provided services to a Seychelles company named Pangates International, which the US government believes supplied aviation fuel to the Syrian government during the current civil war, and continued to handle its paperwork and certify it as a company in good standing, despite sanctions, until August 2015.More than 500 banks registered nearly 15,600 shell companies with Mossack Fonseca, with HSBC and its affiliates accounting for more than 2,300 of the total.Dexia and J. Safra Sarasin of Luxembourg, Credit Suisse from the Channel Islands and the Swiss UBS each requested at least 500 offshore companies for their clients.