The SEA server has been rife with instability, and the latest on these string of unfortunate events happens to affect not just the Valve servers, but also other ISPs in the region.
Valve's servers do not appear to be the cause of the recent spate of disconnects. Rather, in a statement made by the Philippines' largest telecommunications company, it was said that a major international undersea cable system suffered two breakages along Taiwan-Japan and China-Korea.
The statement is as follows:
One of the major international undersea cable systems in the region -- the Asia Pacific Cable Network (APCN) -- recently suffered two fiber breaks in the areas between Taiwan-Japan and China-Korea. This has impacted on telecoms traffic in a large area of the Asia Pacific region. As a result, this may affect your data service. The APCN consortium that manages the cable system is now undertaking repairs and expects to finish in mid-April.
While the problem was reported by a Philippine ISP, the problem apparently persists across multiple countries. The breakage will affect multiple South-East Asia's ISPs, so do expect slower connections even outside the game.
One of Southeast Asia's server, specifically the first one [sgp-1(103.28.54.1)], seems to be heavily affected by this problem. Players queued and assigned on that server apparently won't load up at all. However, there are reports that a number of people are finding success on the second server [ sgp-2(103.10.124.1)]. These two Singapore-based servers are acting as Dota 2's SEA server. In order to see if your game is being connected to the respective servers, check the Console while you attempt to connect to a match. These are images shared by reddit user crimson589 about it.
Source: reddit, PLDT, Space Bureau Thailand
