$0.002 per call. Status of one Japanese qualified-invoice issuer registration number (適格請求書発行事業者 登録番号, T + 13 digits) for corporations (法人): registration_number, status (registered, cancelled, expired, not_found), name, registration_date, update_date, cancel_date and expire_date when set, prefecture of the head office, data_as_of and source. Batch: POST {"numbers":[...]} with up to 1000 numbers at $0.0012 per unique number; the price is set from the count before payment. Data as of 2026-10-21, from the National Tax Agency bulk download files (full monthly file plus daily diff files). Sole-proprietor registrations are not covered and return not_found. Sample at no charge: ?sample=1 (25 rows). Invalid numbers (format or check digit) return 400, not charged. Data not loaded returns 503, not charged. 出典：国税庁適格請求書発行事業者公表サイト（国税庁）（https://www.invoice-kohyo.nta.go.jp/）。国税庁適格請求書発行事業者公表サイト（国税庁）（https://www.invoice-kohyo.nta.go.jp/）を加工して作成。Johto Data作成。国が作成したものではありません。 ?t=T1180301018771 Use when: you need to confirm that a Japanese corporate supplier's invoice registration number (T-number) is valid, cancelled or expired before paying an invoice or claiming input tax credit, one at a time or in batches of up to 1,000. Don't use when: you need sole-proprietor (個人事業者) registrations, the full address, the 法人番号 register itself, credit or financial data, or tax advice. Price: $0.002 per call over x402 (USDC on Base). Set sample:true for a free sample.