It flew about 600 km (372 miles) before falling into sea, South Korea said, while Japan's defense ministry estimated it covered a distance of 650 km (400 miles).
Over the past two weeks, Russia has escalated its long-range bombardment of power and gas infrastructure across Ukraine, causing significant damage and blackouts in several large cities.
Three story building in Kyiv targeted by Russian missiles on Monday, with missile debris falling in three other districts within the city.
Russia launched a major air attack on Ukraine Sunday morning, leading to air alerts in the entire country, and a directive that citizens not leave their shelters.
Iran recently unveiled its new UAV named "Gaza," claiming it can reach distances of thousands of kilometers.
N. Korea conducted a flight test of an intermediate-range hypersonic missile which it said at the time used a new solid-fuel engine and also tested the operation of a maneuverable warhead.
"The enemy is deliberately hitting a cluster of civilians," said Roman Starovoit the governor of the neighboring Kursk region.
Officials have said the Russian forces were trying to repeat attacks of the last winter when the Ukrainian power sector was severely damaged, resulting in long blackouts for millions of people.
"The fear is that when you make a change in the level of readiness, the other side will also change its level of readiness and vigilance."
Despite Hezbollah’s salvo of rockets on Sunday, Defense Minister Yoav Gallant said during a visit to Tel Nof air force base that the IDF was increasingly gaining the upper hand.