{"resource":"https://toll402.dev/v1/t/fn_at_validate","service":"Toll402","areas":["other"],"answering":true,"http_status":402,"latency_ms":159,"price_usdc":0.001,"buyers_30d":2,"calls_30d":2,"description":"Offline validator for an Austrian Firmenbuchnummer (FN), the company register number. Normalizes the numeric part (1-6 digits, left-padded to 6 for calculation), computes the modulo-11 check letter using weights 2,1,2,1,2,1 (Luhn-style digi","id":"35393c9c5a20","category":"Calculators and conversions","accuracy":null,"tool_calls":null,"checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/35393c9c5a20"}