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).
SPARQL endpoint (GET, Accept: application/sparql-results+json). Items with P31/P279* = Q671224 ("data center"; NB: Q1063421 is NOT data center). robots.txt of query.wikidata.org disallows /sparql for generic crawlers; WDQS is a public query API governed by its own limits (60 s/query, 60 s processing per 60 s per client, 5 parallel, HTTP 429 + Retry-After) and the Wikimedia User-Agent policy — respectRobots is deliberately false for this API endpoint.
Current provenance rows by entity type, and archived documents by page type.
How this source is read.
190 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.