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IBANforge
Deutsche Bundesbank register

Bankleitzahl 55020600

Aareal Bank (formerly Westdeutsche ImmobilienBank), Wiesbaden

Bankleitzahl55020600
InstitutionAareal Bank (formerly Westdeutsche ImmobilienBank)
Short nameAareal Bank
BICIMMODE5MXXX
Postcode65189
TownWiesbaden
Statusactive
Successor BLZnone

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.

DE70 5502 0600 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": "IMMODE5MXXX",
    "bank_name": "Aareal Bank (formerly Westdeutsche ImmobilienBank)",
    "city": "Wiesbaden",
    "source": "Deutsche Bundesbank Bankleitzahlendatei",
    "as_of": "2026-09",
    "basis": "national_register",
    "authoritative": true,
    "lei": null
  },
  "bank_code_check": {
    "value": "55020600",
    "status": "verified",
    "match": "register",
    "register": "Deutsche Bundesbank Bankleitzahlendatei",
    "authoritative": true,
    "institution": {
      "name": "Aareal Bank (formerly Westdeutsche ImmobilienBank)",
      "street": null,
      "post_code": "65189",
      "town": "Wiesbaden",
      "country": "DE"
    },
    "as_of": "2026-09"
  },
  "sepa": {
    "member": true,
    "schemes": [
      "SCT",
      "SDD",
      "SCT_INST"
    ],
    "vop_required": true,
    "vop_participant": false,
    "basis": "country_default"
  },
  "issuer": {
    "type": "bank",
    "name": "Aareal Bank (formerly Westdeutsche ImmobilienBank)",
    "classification": "default"
  },
  "risk_indicators": {
    "country_risk": "standard",
    "sepa_reachable": true,
    "vop_coverage": true,
    "test_bic": false
  }
}
Check an IBAN in the playgroundAudit a whole creditor fileGerman bank codes (Bankleitzahlen)

Source: Deutsche Bundesbank Bankleitzahlendatei, register as of 2026-09.