Attribution -- Mongolia (MN) Postal Codes Dataset

Source: Communications Regulatory Commission of Mongolia -- "Шуудангийн
нэгдсэн код" (Unified Postal Code), published via Mongolia's national
open-data portal (https://opendata.gov.mn/dataview/5290), under Cyber
Development, Innovation and Communications Minister's Order A/24
(2024-09-30).

The portal does not state a specific machine-readable reuse licence (no
SPDX-mappable terms found on the dataset page); it is treated as government
open data on the basis of its formal publication under a ministerial order on
the national open-data portal.


Changes made to the source data: admin_code1 derived as ISO 3166-2:MN by a name-based crosswalk
(not the source's own area codes); each area header row of the source added as a data row for the
area's base code; all Ulaanbaatar districts grouped under Ulaanbaatar (MN-1).