Sources & provenance
Verified source catalog
Check where each dataset comes from, what area it covers, its date and licence. Coverage differs between the basemap and agricultural layers.
Communication sites and provinces
How a province is identified
Each site is matched by its coordinates to the boundaries used by the map. Its province name and code come from the same area catalog. If a province boundary is missing, we check a documented city or regency belonging to that province.
Updates
Matching is refreshed automatically when the local area catalog or boundary files change. It follows the updated data loaded into this site; downloading new official changes is a separate step.
If available boundaries cannot identify one province, the result is unspecified. Historical 2017 area labels remain in source files for provenance; the displayed grouping uses the current match.
What these records mean
These are OpenStreetMap records, not a complete tower census or a signal measurement. Zero records means this source has no recorded site here. The facility operator may differ from a mobile subscription provider. The source date is not a field inspection date.
A building point may be an approximate center rather than a facility boundary. Operation, speed, technology, coverage and access require separate verification.
OpenStreetMap · ODbL 1.0Research reference library
Sources for reading and exploration, usage terms vary by source, inclusion does not mean its data has been integrated into the map
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