The US Navy and NASA have also barred access to the app for their workers. A bipartisan bill seeking to ban DeepSeek from government devices also was introduced in Congress last month, but has yet to advance.
Congress banned TikTok over national security concerns after its Chinese parent, ByteDance, failed to divest by a Jan. 19 deadline.
However, President Trump issued an executive order delaying enforcement of the law by 75 days until a US buyer could be found.
On Thursday, Trump said he would “probably” extend the order if necessary.