Bankleitzahl 51211000

IBAN structure with this code

A German IBAN is DE, two check digits, the eight-digit Bankleitzahl, then the ten-digit account number. The BLZ is what the register can vouch for; the account number is known only to the bank.

DE76 5121 1000 1000 0000 00

Synthetic example: the account part is a placeholder, this IBAN belongs to nobody. It shows where the code sits inside the IBAN.

What the API answers for this code

The block below is the route's own answer, produced by the same code that serves api.ibanforge.com, on the register as of the date shown. Nothing is edited.

{
  "valid": true,
  "bic": {
    "code": "NATXDEFPXXX",
    "bank_name": "NATIXIS Pfandbriefbank",
    "city": "Frankfurt am Main",
    "source": "Deutsche Bundesbank Bankleitzahlendatei",
    "as_of": "2026-09",
    "basis": "national_register",
    "authoritative": true,
    "lei": "529900J6VNDBVTKV7I86"
  },
  "bank_code_check": {
    "value": "51211000",
    "status": "verified",
    "match": "register",
    "register": "Deutsche Bundesbank Bankleitzahlendatei",
    "authoritative": true,
    "institution": {
      "name": "NATIXIS Pfandbriefbank",
      "street": null,
      "post_code": "60322",
      "town": "Frankfurt am Main",
      "country": "DE"
    },
    "as_of": "2026-09"
  },
  "sepa": {
    "member": true,
    "schemes": [
      "SCT",
      "SDD"
    ],
    "vop_required": true,
    "vop_participant": false,
    "basis": "epc_register"
  },
  "issuer": {
    "type": "bank",
    "name": "NATIXIS Pfandbriefbank",
    "classification": "default"
  },
  "risk_indicators": {
    "country_risk": "standard",
    "sepa_reachable": true,
    "vop_coverage": true,
    "test_bic": false
  }
}