The contiguous U.S. mainland is less than 5,000 miles from North Korea.
General Mattis said: "It's a continued effort to build a ballistic missile threat that engagers, regional peace and certainly the United States".
The designation allows the United States to impose more sanctions, though some experts said it risked inflaming tensions.
The Korean side also called for the WFP's systemic and thorough monitoring of the distribution of humanitarian assistance, citing concerns that North Korea could misappropriate outside assistance. It is not a solicitation to make any exchange in commodities, securities or other financial instruments. North Korea has typically tested missiles in spring or summer, and during the day.
After hitting "send" on the apocalyptic-sounding message, the communications official responsible for it was immediately wishing for a do-over, saying, "It was a mistake on my part".
Japan's defence minister said earlier the missile was thought to have landed within Japan's exclusive economic zone (EEZ).
"Today's test proves that Pyongyang still feels able to test at will", he told CNN, adding it also shows the Trump administration "has to get serious about deterring an atmospheric nuclear test". While only about 37 percent of trainees had obtained jobs upon graduation, nearly 54 percent of trainees in 2016 were employed after completing their programs, the unification ministry said. The S&P 500 index was up half a percent in mid-afternoon. Initial assessment indicates that this missile was an intercontinental ballistic missile (ICBM). North Korea's last test of a ballistic missile was on Sept. 15, an intermediate-range KN-17 that flew over the Japanese island of Hokkaido.
The rogue nation's latest act of aggression is likely to send shockwaves around the world.
North Korea has given no indication it is willing to re-enter dialog on those terms. The US, which has 28,500 troops in South Korea as a legacy of the 1950-53 Korean war, denies any such intention.