"All I can tell you is we're aware of them, we're looking into them, we're talking about this with Pakistani leaders," State Department spokesperson John Kirby told reporters.
"I'm going to refer you to Pakistan for the reasoning behind its decisions," he said.
Kirby added: "What I can tell you is we recognise there's a balance to be struck here between the fight against terrorism and media freedom. It's a balance that every nation has to strike. Pakistan should speak for itself and for why it made this decision and how it's going to execute this decision.
On Monday, Pakistan banned media coverage of militant groups like the Jamaat-ud-Dawa (JuD) as part of a crackdown on terror, acknowledging for the first time that the Mumbai attack mastermind Saeed-led outfit was a wing of the Lashkar- e-Taiba (LeT).
The Pakistan Electronic Media Regulatory Authority (PEMRA) had issued a notification banning all satellite TV channels and FM radio from coverage of LeT, Jamaat-ud-Dawa (JuD) and Falah-e-Insaniat Foundation (FIF) under UN restriction.
Yesterday, a media report citing official sources said that Pakistan's decision to ban media coverage of the outlawed groups was part of a commitment given to US President Barack Obama by Prime Minister Nawaz Sharif during his recent visit.
"The PM apprised the president about Pakistan's resolve to take effective action against UN-designated terrorist individuals and entities, including LeT and its affiliates, as per its international commitments and obligations under UN Security Council resolutions," said a joint statement issued during Sharif's visit.