The US advises travellers to ten other countries to plan a will before visiting.
They are Afghanistan, the Central African Republic, Iran, Iraq, Libya, Mali, Somalia, South Sudan, Syria and Yemen.
President Donald Trump announced that the US had designate North Korea as a state sponsor of terrorism in November last year.
It added the nation to a list that includes Iran, Sudan and Syria.
North Korea briefly re-opened communications channels with Seoul in an attempt to placate the international community's fears of World War 3.
Former CIA analyst Fred Fleitz however warned North Korea will continue to build up its nuclear and missile arsenal in preparation for possible attacks.
He said: "We have to think about what’s the purpose of North Korea’s nuclear deterrent. Is it really just to protect the country?
"I think the size of North Korea’s missile arsenal, the fact that North Korea reportedly has built a hydrogen bomb, it may have up to 60 weapons, it’s building submarines to launch missiles – I don’t think this is a deterrent. This is an offensive force."
North Korea has been fuelling World War 3 concerns with its constant refusal to shut down its nuclear weapons development programme and repeated missile testing despite the international outcry.Mr Fleitz said US President Donald Trump should intervene to forcefully denuclearise the rogue nation with "limited military action" to avoid triggering World War 3.Speaking to Fox Business, he said: "The North will pocket any concession and continue their missile and nuclear programmes."We have to stop it before it’s used. The idea of some type of limited military action, maybe shooting down North Korean missiles, maybe a naval blockade has to be on the table."
Recent satellite images appeared to show fervent activity on a second submersible ballistic missile test stand barge for a nuclear submarine – suggesting North Korea could be preparing for a new nuclear test.
This barge supports the development of the Pukguksong-1 SLBM and the SINPO-Class experimental ballistic missile submarine.
It comes after North Korea dramatically called off a second meeting with Seoul to talk about Pyongyang's plans to dispatch a delegation to February's Winter Olympics in Pyeongchang.
According to the Yonhap news agency, North Korea refused to provide an official reason for the cancellation.
Earlier this week North and South Korea agreed to march under a 'unity flag' at the Games, to be held in Pyeongchang County.
Kim Jong-un warned a "nuclear button is always on my desk" as he threatened the US during his New Year's address in Pyongyang.
He said: "The entire United States is within range of our nuclear weapons, and a nuclear button is always on my desk. This is a reality, not a threat."
In an effort to stop the rogue nation, the United Nations Security Council imposed tough new sanctions on North Korea after its continued missile testing.
The resolution seeks to ban nearly 90 percent of refined petroleum product exports to North Korea.
