The full contract table from the central АОП register (data.egov.bg) — search and filter by awarder, contractor and amount, sorted by value, date or risk level. Every row links to that contract's full detail page.
Contracts carrying risk flags (single-supplier concentration, single bidder, debarred company) are highlighted, and you can filter to the flagged ones only.
See also the procurement overview, CPV sectors and red flags.