The comments by the spokesman of Iran's paramilitary Revolutionary Guard came days after the country's supreme leader Ayatollah Mojtaba Khomeini warned that "any kind and level of threat" from the United States or Israel would face a response without geographic limits.
Asked at a Tehran news conference about the limit on missile ranges, General Hossein Mohebbi said, "That restriction has been lifted for us".
He did not say whether Iran had missiles capable of exceeding the limit, saying only Iran would "demonstrate these capabilities in practice" rather than make statements.
Iran is not known to have missiles that can go beyond the 2000km limit - a range that puts parts of Greece and the Balkans, the entire Arabian peninsula, the Levant and most of Egypt within reach.
However, US officials have said technology from Iran's space program can be repurposed to build intercontinental ballistic missiles.
The Iranian military, meanwhile, said a tanker east of the Strait of Hormuz had hit a mine and caught fire.
It did not identify the tanker's flag or destination.
It said the vessel had turned off its navigational beacon and was sailing in a "prohibited area".
The US military said on Saturday it was launching a task force to help crack down on Iran's movement of advanced weapons and other sanctioned material over its land borders and through the Caspian Sea, building on its naval blockade.
Task Force Iron Gate will be based in Florida, and will co-ordinate with other US government agencies.
Beyond movement of weapons, it will also focus on halting the flow of dual-use technologies used by Iran and stemming what the US calls illegal revenue streams.
The establishment of the task force is the latest illustration of how the US is still searching for ways to increase pressure on Iran, more than eight months after launching with Israel a war against the Islamic Republic.
A Reuters investigation concluded Iran has created a secret network of military agencies to import at least $US2 billion ($A2.9 billion) in hardware, explosives and heavy-duty trucks since January 2025, evading both the US naval blockade and international sanctions.
The material entered Iran by cargo ship across the Caspian Sea from Russia, by truck from Central Asia and by freight planes from China, the Reuters investigation showed.
US Central Command said the task force will co-ordinate with other government agencies.
A US military official, speaking on condition of anonymity, said that was expected to include the Treasury, State and Justice Departments but also the intelligence community.
"Strengthening CENTCOM's collaboration with US interagency partners will further constrain Iran's ability to finance terrorism, rebuild weapons factories, and replenish their military," Admiral Brad Cooper, the commander of Central Command, said in a statement.
Central Command estimated that its naval blockade has prevented Iran from exporting more than $US25 billion in crude oil.
Mediators have intensified efforts in recent days to end the war between Iran and the US amid fears it could reignite after the US midterm elections.
with AP
