{"slug":"2s-io-api-validate-iban-a2e7e6","title":"Validate an International Bank Account Number (IBAN) with full ISO 13616 checks","host":"2s.io","method":"GET","resource":"https://2s.io/api/validate/iban","category":"code","description":"Validate an International Bank Account Number (IBAN) with full ISO 13616 checks: country-specific length and the ISO 7064 mod-97 checksum (not just a regex). Returns {valid, iban (normalized), formatted (4-char groups), countryCode, checkDigits, bban, reason}. Catches transposed digits and wrong-len","price_listed":0.0025,"price_asked":0.0025,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":250,"reported_calls_30d":2,"reported_payers_30d":1,"networks":["eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"iban":"DE89370400440532013000"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"properties":{"method":{"const":"GET"},"queryParams":{"properties":{"iban":{"description":"IBAN to validate (spaces/hyphens allowed; case-insensitive).","type":"string"}},"required":["iban"]},"type":{"const":"http"}},"required":["type","method","queryParams"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.0025,"price_match":true,"latency_ms":250,"error":null}],"description_full":"Validate an International Bank Account Number (IBAN) with full ISO 13616 checks: country-specific length and the ISO 7064 mod-97 checksum (not just a regex). Returns {valid, iban (normalized), formatted (4-char groups), countryCode, checkDigits, bban, reason}. Catches transposed digits and wrong-length accounts that a format check misses, and returns the canonical form so a glue/ETL pipeline can validate AND normalize bank details in one deterministic call. ~85 countries. No bank directory lookup — structure + checksum only.","last_updated":"2026-09-09T12:24:00.06Z","schemes":["exact"]}