Recorded per source; the attribution line is shown on every page that uses a value from this source.
Quirks recorded by the connector author (access method, limits, robots exceptions).
Features tagged telecom=data_center or building=data_center (nodes, ways, relations; `out center tags;`), queried per world tile (13 non-overlapping bboxes), sequential, ≥ 10 s apart, resumable cursor in connector state. robots.txt of overpass-api.de disallows /api/ for generic crawlers; the Overpass API is a query service whose usage terms are the Overpass "Commons" guidance (https://dev.overpass-api.de/overpass-doc/en/preface/commons.html: ≤ ~10 000 requests and ≤ ~1 GB per user per day) — we send ~13 requests / ≈ 3 MB per full pass, so respectRobots is deliberately false for this API endpoint (see docs/connectors/osm-overpass.md).
Current provenance rows by entity type, and archived documents by page type.
How this source is read.
1,346 facilities carry at least one current value observed here.
The public index does not filter facilities by source yet. Browse the facilities index — each facility page lists, field by field, which source backs which value, with first/last observation dates and a link to the page it was read from.