Na Nak (นานาค) is the official subdistrict with code 960207. It is separate from neighbouring Khosit and from similarly spelled Na Nai or Na Kham tambons elsewhere in Thailand. The institutional Tak Bai cultural survey identifies Khok Chako reserved forest in Na Nak. Local-government documents identify settlements including Kua Lo Ta, while other community records use the name Pa Da Do. These names refer to villages within the tambon rather than to separate districts.
For local travel, give the Thai tambon name and Tak Bai District alongside the particular village or service you need. Forest land should not be assumed to have a staffed tourist entrance or unrestricted access merely because it appears within an administrative area. Obtain the destination address from a local host or authority; the tambon reference point marks the geographic area and is not the Na Nak office or a forest trailhead.
